Data Last Updated: September 1, 2023

ZIP Code 94820 in El Sobrante, CA

City: The City name that the USPS assigned as primary for this ZIP Code.	El Sobrante, California
City Alias: Other names this area can be known as. Includes town, village, community, college, business, neighborhood, postal entity, or municipality names.	El Sobrante Richmond
County: ZIP Code 94820 is located in 1 County.	Contra Costa County
Timezone: The Time Zone(s) covered. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Pacific (GMT -08:00)
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Keep in mind that area codes can cross timezones, so more than 1 may be shown.	5:49:10 PM
Population: The population of the 94820 ZIP Code is calculated by adding the population of all counties covered from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live here, not just those present while the Census was being completed.	No Population Data
Area Codes: There are 1 Area Codes assigned to this ZIP Code.	510 / 341
Classification: A unique type of ZIP Code reserved for PO Boxes only. Usually, PO Boxes are located inside Post Office locations, and so coordinates for this would be the actual Post Office building. PO Box designated ZIP Codes can include some standard street delivery addresses. Our ZIP+4 Database can help determine these kinds of records.	PO Box
Coordinates: The latitude/longitude centroid coordinates for this area.	37.9772, -122.2943
Quick Link: Copy the direct link to this page and use anywhere you like!	https://www.zip-codes.com/zip-code/94820/zip-code-94820.asp

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Important ZIP Code 94820 Information

ZIP Code 94820 is located in the city of El Sobrante, California and covers 0 square miles of land area. It is also located within Contra Costa County.

94820 is classified as a PO Box ZIP Code. Its primary use is for Post Office box delivery. It may include some mailbox delivery as well, but this will be the minority use.

ZIP Code 94820 is in the Pacific (GMT -08:00) timezone and does observe daylight saving time. It has 2 Area Codes providing telephone service, including 510 and 341.

The Map above shows the boundaries for this ZIP Code and what geography it covers. More Demographics are available below, including charts for population by race, population by gender, population over time, average income, average house value, income over time, and much more. Local Public, Private, and Post Secondary Schools shows which schools are nearby.

94820 is a part of the San Francisco-Oakland-Fremont, CA Core-Based Statistical Area (CBSA) and it's CBSA code is 41860. The Office of Management and Budget (OMB) defines this as a Metro area. Statistical Areas are defined as either Micropolitan (at least 10,000 but less than 50,000 population) or Metropolitan (50,000+ population). See more Geography & Statistical Areas.

ZIP Code 94820 Demographics

Current Population: This field gives the estimated household population for this ZIP Code for September, 2023. The estimate is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This data does not include population counts for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	0
2020 Population: Total Population from the 2020 Census. This reflects the exact population of the geographic area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	0
Population Density: Population density is a measurement of population per unit of land area land area. In this case, the number is expressed in people per square mile.	--
Average Income: The Median Average Household income per ZIP code based on Census American Community Survey. Sort by this field to get all the top household incomes by zip code. The Median average household income numbers are from the Census American Community Survey 2014-2018.	$0

Households: Total estimated amount of households per ZIP Code based on Census 2020 Zip Code Tabulation Area. The households per zip numbers are not projected to the future, they are actual Census 2020 numbers.	0
Average House Value: The Median average house value per ZIP code based on Census American Community Survey. Sort by this field to get the top house values by zip code. The Median average house value numbers are from the Census American Community Survey 2014-2018.	$0
Persons Per Household: Average number of individuals per household. The average number of individuals per household are not projected to the future, they are actual Census 2020 numbers.	0.00

Pie Chart & Table Comparison Bar Chart

Population by Race

White Population: The White Population is an exact count from the 2020 Census for this geographic area. The numbers for the White Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including White. This count includes all who selected White/Caucasian in their response, even if they selected another race as well.	0	0%
Black Population: The Black Population is an exact count from the 2020 Census for this geographic area. The numbers for the Black Population are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Black or African American. This count includes all who selected Black or African American in their response, even if they selected another race as well.	0	0%
Hispanic Population: The Hispanic Population is an exact count from the 2020 Census for this geographic area and is not an estimate or future projection. On the 2020 U.S. Census questionnaire, people were first asked for their Ethnicity, including if they were from Hispanic, Latino, or Spanish Origin, including Mexican, Mexican American, Chicano, Puerto Rican, Cuban, or other ethnic origin. This count includes all who affirmed that they were part of this ethnic origin. Respondents who selected this option were also asked to select a race separately and would be counted once in this number as well as the race they chose. From the U.S. Census definition, Hispanic is an ethnic origin and not a race.	0	0%
Asian Population: The Asian Population is an exact count from the 2020 Census for this geographic area, not future projections. On the U.S. Census questionnaire, people were asked to check all races which applied to them, including Chinese, Filipino, Asian Indian, Vietnamese, Korean, Japanese, or Other Asian. This count includes all who selected one of these options in their response, even if they selected another race as well.	0	0%
American Indian Population: The American Indian and Alaska Native Population is an exact count from the 2020 Census for this geographic area and not estimates for the future. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including American Indian and Alaska Native. This count includes all who selected American Indian and Alaska Native in their response, even if they selected another race as well.	0	0%
Hawaiian Population: The Hawaiian or Pacific Islander Population is an exact count from the 2020 Census for this geographic area and are not future projections. On the 2020 U.S. Census questionnaire, people were asked to check all races which applied to them, including Native Hawaiian and Pacific Islander. This count includes all who selected either Hawaiian or Pacific Islander in their response, even if they selected another race as well.	0	0%
Other Population: The estimate population for all other races per ZIP code based on Census 2020 Zip Code Tabulation Area. The other race population numbers are not projected to the future, they are actual Census 2020 numbers.	0	0%

Pie Chart showing Population by Race: White [0, 0%], Black [0, 0%], Hispanic [0, 0%], Asian [0, 0%], Hawaiian [0, 0%], American Indian 0, 0%], and Other [0, 0%] for ZIP Code 94820 in El Sobrante, CA. Load Chart

Source: U.S. Census Bureau (2020) DHC

Pie Chart & Table Comparison Bar Chart

Gender Breakdown

Male Population: The Male Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Male Population information is important for healthcare planning, policy making, social research, and economic planning and development.	0	0%
Female Population: The Female Population from the 2020 Census. This is not a forecast for the future, but an exact count for this geographic area at the time of the Census. Each respondent self-identified their gender on the survey, as they were asked to indicate their gender assigned at birth. The Female Population information is important for healthcare planning, policy making, social research, and economic planning and development.	0	0%
Median Age: The Median Age of the Total Population from the 2020 Census for this geographic area. Median age is the middle age of the population. Half the population is older than the average age and half is younger. Median Age can relate how young or old a geographic area is compared to others.		0.0 years
Male Median Age: The Median Age of all Males from the 2020 Census for this geographic area. The Male Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth.		0.0 years
Female Median Age: The Median Age of all Females from the 2020 Census for this geographic area. The Female Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth.		0.0 years

Pie Chart showing population of Males [0, 0%] vs Females [0, 0%] for 94820 in El Sobrante, CA. Load Chart

Source: U.S. Census Bureau (2020) DHC

Population by Age & Gender

Median Age: The Median Age of the Total Population from the 2020 Census for this geographic area. Median age is the middle age of the population. Half the population is older than the average age and half is younger. Median Age can relate how young or old a geographic area is compared to others. 0

Male Median Age: The Median Age of all Males from the 2020 Census for this geographic area. The Male Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth. 0

Female Median Age: The Median Age of all Females from the 2020 Census for this geographic area. The Female Median Age is the actual average from the 2020 Census, not an estimate or future projection. Median Age is the average age of the population. Half of the population is older and the other half is younger. Gender is self-reported by individuals when asked about their sex at birth. 0

Line Chart showing the population by Age Group and Gender. One line shows the Total population for ZIP 94820 in that age group, another line shows the Male population for that age group, and the last line shows the Female population for the given age group. A table also provides the same information below. Load Chart

Source: U.S. Census Bureau (2020) DHC

Group	< 5	5-9	10-14	15-19	20-24	25-29	30-34	35-39	40-44	45-49	50-54	55-59	60-64	65-69	70-74	75-79	80-84	85+
Male
Female
Total

Average Income per Household

Bar Chart showing Average Income per Household and comparing it to the city of El Sobrante, Contra Costa County, California, and the United States National Average. Load Chart

Source: U.S. Census 2016-2021 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Average House Value

Bar Chart showing Average House Value for the 94820 ZIP Code and comparing it to the city of El Sobrante, Contra Costa County, California, and the United States National Average. Load Chart

Source: U.S. Census 2016-2021 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Population Estimate Over Time

Line Chart showing Population Estimates from 2011 until 2021 for ZIP Code 94820 with Decennial U.S. Census lines for 2010 and 2020 actual population. A table also provides the same information below. Load Chart

Source: U.S. Census 2011-2021 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Group	2010	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021
Population Estimate	--	0	0	0	0	0	0	0	0	0	0	0
Decennial Census	0	--	--	--	--	--	--	--	--	--	0	--

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Employment Status

Employed: Employed includes all civilians 16 years old and over who were either (1) "at work" -- those who did any work at all during the reference period as paid employees, worked in their own business or profession, worked on their own farm, or worked 15 hours or more as unpaid workers on a family farm or in a family business; or (2) were "with a job but not at work" -- those who did not work during the reference period but had jobs or businesses from which they were temporarily absent due to illness, bad weather, industrial dispute, vacation, or other personal reasons.	0	0%
Unemployed: All civilians 16 years old and over are classified as unemployed if they (1) were neither "at work" nor "with a job but not at work" during the reference period, and (2) were actively looking for work during the last 4 weeks, and (3) were available to accept a job. Also included as unemployed are civilians who did not work at all during the reference period, were waiting to be called back to a job from which they had been laid off, and were available for work except for temporary illness.	0	0%
Not In Labor Force: Not in labor force includes all people 16 years old and over who are not classified as members of the labor force. This category consists mainly of students, housewives, retired workers, seasonal workers interviewed in an off season who were not looking for work, institutionalized people, and people doing only incidental unpaid family work (less than 15 hours during the reference period).	0	0%

Pie Chart showing Employment Status for those Employed, Unemployed, and Not In the Labor Force. A table also provides the same information. Load Chart

Source: U.S. Census 2016-2021 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Income Estimate Over Time

Line Chart showing Median Income Estimates from 2011 until 2021 for Median Household Income, Median Family Income, Median Nonfamily Income, Median Male Income, and Median Female Income for the 94820 ZIP Code. A table also provides the same information below. Load Chart

Source: U.S. Census 2011-2021 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Income Type	2011	2102	2013	2014	2015	2016	2017	2018	2019	2020	2021
Median Household Income	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0
Median Family Income	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0
Median NonFamily Income	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0
Median Male Income	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0
Median Female Income	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0	$0

Gross Rent Paid

Less than $500: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.) fuels. This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid under $500 per month.	0	0%
$500 to $999: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid between $500 to $999 per month.	0	0%
$1,000 to $1,499: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid between $1,000 to $1,499 per month.	0	0%
$1,500 to $1,999: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid between $1,500 to $1,999 per month.	0	0%
$2,000 to $2,499: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid between $2,000 to $2,499 per month.	0	0%
$2,500 to $2,999: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid between $2,500 to $2,999 per month.	0	0%
$3,000 or more: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which paid $3,000 or more per month.	0	0%
No Rent: Gross rent is the monthly rent plus the estimated average monthly cost of utilities (electricity, gas, water and sewer) and fuels (oil, coal, kerosene, wood, etc.). This shows the number of renter-occupied units paying cash rent (excluding one-family houses on ten or more acres) and percentage which pay no rent per month.	0	0%

Pie Chart showing Gross Rent Paid by renters in the 94820 ZIP Code. A table also provides the same information. Load Chart

Source: U.S. Census 2016-2021 American Community Survey 5-Year Estimates. Table Table DP04. SELECTED HOUSING CHARACTERISTICS

Pie Chart & Table Comparison Bar Chart

Health Insurance

Private Insurance: Census Estimate of the Civilian noninstitutionalized population with private health insurance. Private health insurance is a plan provided through an employer or union; a plan purchased by an individual from an insurance company; or TRICARE or other military health coverage.	0	0%
Public Insurance: Census Estimate of the Civilian noninstitutionalized population with public health insurance. Public coverage includes the federal programs Medicare, Medicaid and other medical assistance programs, VA and CHAMPVA Health Care; the Children’s Health Insurance Program (CHIP); and individual state health plans. The ACS questionnaire does not specifically ask about these types of coverage, but respondents who indicate these types of coverage are counted as having public coverage.	0	0%
No Insurance: Census Estimate of the Civilian noninstitutionalized population with no health insurance of any kind. People whose only health coverage is Indian Health Service are uninsured as IHS is not considered comprehensive coverage.	0	0%

Pie Chart showing Civilian noninstitutionalized population with Private, Public, or No Health Insurance coverage for individuals in this geographic area. A table also provides the same data. Load Chart

Source: U.S. Census 2017-2021 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Other Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units for this ZIP Code. This excludes PO Boxes and all other contract box types.	0
# Business Mailboxes: The number of active business delivery mailboxes and centralized units for this ZIP Code. This excludes PO Boxes and all other contract box types.	0
Total Delivery Receptacles: The total number of delivery receptacles for this ZIP Code. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	771
Single Family Delivery Units: Total count of single family mail delivery receptacles in this ZIP Code; generally analogous to homes.	0
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles in this ZIP Code; generally analogous to apartments.	0

# of Businesses: The total number of Business Establishments for this ZIP Code. Data taken from Business Census 2021.	0
1st Quarter Payroll: The total payroll for the first quarter this ZIP Code. Data taken from Business Census 2021.	$0
Annual Payroll: The total annual payroll for this ZIP Code. Data taken from Business Census 2021.	$0
# of Employees: The total number of employees for this ZIP Code. Data taken from Business Census 2021.	0

94820 ZIP Code Geography & Statistical Areas

CBSA Name: Name of the Core Based Statistical Area . A Core Based Statistical Area is the official term for a functional region based around an urban center of at least 10,000 people, based on standards published by the Office of Management and Budget (OMB) in 2000. These standards are used to replace the definitions of metropolitan areas that were defined in 1990. A CBSA is broken into two sub categories, Metro and Micro, and are detailed in the CBSA Type Field. These are defined by their population densities. To be considered a Micro area, population must be between 10,000 and 50,000. To be considered a Metro area, population must exceed 50,000.	San Francisco-Oakland-Fremont, CA
CBSA Number: Core Based Statistical Area (replaces old MSA's). A Core Based Statistical Area is the official term for a functional region based around an urban center of at least 10,000 people, based on standards published by the Office of Management and Budget (OMB) in 2000. These standards are used to replace the definitions of metropolitan areas that were defined in 1990. A CBSA is broken into two sub categories, Metro and Micro, and are detailed in the CBSA Type Field. These are defined by their population densities. To be considered a Micro area, population must be between 10,000 and 50,000. To be considered a Metro area, population must exceed 50,000.	41860
CBSA Type: Indication of whether a CBSA is Metro (over 50,000 population) or Micro (10,000 - 50,000 population).	Metro
CBSA Division: Name of the Core Based Statistical Area Division. A metropolitan statistical area containing an urbanized area of at least 2.5 million people can be subdivided into two or more 'metropolitan divisions', provided specified criteria are met. Metropolitan divisions are conceptually similar the primary metropolitan statistical areas (PMSAs) defined under previous standards. This field gives the sub-divided region name	36084
CBSA Population: The estimated population for the selected CBSA. Source: Table DP-1: Profile of General Population and Housing Characteristics: 2010. 2010 Census Summary File 1.	4,335,391
MSA: Metropolitan Statistical Area Description Name. MSA's were replaced by CBSA's in the 90's. We keep the old MSA's in our database because some of our older customers have mapped their data by this information and it makes it easier for them if we leave the data in the database.	San Francisco-Oakland-San Jose, CA CMSA
Land Area: The approximate amount of land area covered by this ZIP Code in Square Miles.	--
Water Area: The approximate amount of water area covered by this ZIP Code in Square Miles.	--

Congressional District: The 118th Congressional District comes from the Census for congressional districts of the 118th Congress. This field shows which districts the ZIP Code belongs to.	08
Congressional Land Area: This field provides the approximate land area covered by the Congressional District for which the ZIP Code belongs to.	32867.21 sq mi
PMSA: Primary Metropolitan Statistical Area. This is the area that the Census Bureau designates as the 'primary' area within a given MSA.	Oakland, CA PMSA
Intro Date: The date this ZIP Code was introduced by the USPS into the database. It is in the form of YYYY-MM. In cases where the actual date is unknown, it will be preceded by a < to indicate 'Before this date'.	< 2004-10
Place FIPS Code: FIPS codes, or Federal Information Processing Standards, are numeric codes that uniquely identify geographic areas. The National Institute of Standards and Technology (NIST) assigns FIPS codes. The number of digits in a FIPS code varies depending on the level of geography. This is the 7 digit FIPS Code for the Place that this record covers (if known).	0622454
Place FIPS: FIPS codes, or Federal Information Processing Standards, are numeric codes that uniquely identify geographic areas. The National Institute of Standards and Technology (NIST) assigns FIPS codes. The number of digits in a FIPS code varies depending on the level of geography. This is the name of the FIPS for the Place that this record covers (if known).	El Sobrante CDP (Contra Costa County); California

Adjacent & Nearby 94820 ZIP Codes

94564: Pinole, CA
94803: El Sobrante, CA
94806: San Pablo, CA
94805: Richmond, CA
94547: Hercules, CA
94530: El Cerrito, CA
94808: PO BOX
94572: Rodeo, CA
94802: PO BOX
94804: Richmond, CA
94801: Richmond, CA
94850: Richmond, CA
94707: Berkeley, CA
94708: Berkeley, CA
94807: PO BOX
94706: Albany, CA
94525: Crockett, CA
94569: PO BOX
94709: Berkeley, CA
94710: Berkeley, CA

Next: 94850 94808: Previous

Schools in ZIP Code 94820

We could not locate which school district ZIP Code 94820 belongs to, but we will update this once updated district data is released.There are no public schools nor private schools with a mailing address in the 94820 ZIP Code, but we have located several schools which are nearby.ZIP Code 94820 also has 6 universities, colleges or post secondary education institutions nearby which would be a short commute to.

Murphy Elementary
4350 Valley View Rd.
El Sobrante, CA 94803
District: West Contra Costa Unified School District (nearby)

De Anza High
5000 Valley View Rd.
Richmond, CA 94803
District: West Contra Costa Unified School District (nearby)

Valley View Elementary
3416 Maywood Dr.
Richmond, CA 94803
District: West Contra Costa Unified School District (nearby)

Sheldon Elementary
2601 May Rd.
Richmond, CA 94803
District: West Contra Costa Unified School District (nearby)

Stewart Elementary
2040 Hoke Dr.
Pinole, CA 94564
District: West Contra Costa Unified School District (nearby)

El Sobrante Christian Junior/Senior High School
5070 Appian Way
El Sobrante, CA 94803
District: Private School (nearby)

Bethel Christian Academy
431 Rincon Ln
El Sobrante, CA 94803
District: Private School (nearby)

El Sobrante Christian School
5100 Argyle Rd
El Sobrante, CA 94803
District: Private School (nearby)

Colleges & Post Secondary Schools near ZIP Code 94820

Contra Costa College
2600 Mission Bell Dr
San Pablo, CA 94806
Type: Post Secondary

Dominican School Of Philosophy & Theology
2301 Vine Street
Berkeley, CA 94708-1816
Type: Post Secondary

Zaytuna College
1712 Euclid Avenue
Berkeley, CA 94709
Type: Post Secondary

Pacific School Of Religion
1798 Scenic Ave
Berkeley, CA 94709
Type: Post Secondary

Jesuit School Of Theology Of Santa Clara University
1735 Leroy Ave
Berkeley, CA 94709
Type: Post Secondary

Church Divinity School Of The Pacific
2451 Ridge Road
Berkeley, CA 94709-1211
Type: Post Secondary

References

U.S. Postal Service [Last Updated: 9/1/2023], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 9/1/2023], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census American National Standards Institute (ANSI) [Last Updated: 9/1/2023], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov
Centers for Medicare & Medicaid Services [Updated Yearly], https://www.cms.gov
National Center for Education Statistics [Last Updated: 9/1/2023], https://nces.ed.gov