ZIP Code 91108 in San Marino, CA

Data Last Updated: October 1, 2025
City:San Marino, California
City Alias:Pasadena
County:Los Angeles County
Timezone:Pacific (GMT -08:00)
Local Time:8:13:26 PM
Population:12,777 [See All]
Area Code:626
Classification:Standard [Normal Street Delivery]
Coordinates:34.1212, -118.1151
Land Area:3.789 sq mi
Quick Link:
https://www.zip-codes.com/zip-code/91108/zip-code-91108.asp

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Population & Demographics


ZIP Code 91108 has 12,777 residents and 4,294 households (average 2.96 persons per household). The median age is 48.1 years, significantly older than the state (37.5) and significantly older than the nation (38.8). The gender split is 48.9% male and 51.1% female, which is about the same as the state male share (49.4%), making this a female-majority area. Largest groups are Asian (60.2%, much higher than the state average of 15.4% and well above the national average of 6.0%) and White (29.4%, much lower than the state average of 41.2% and well below the national average of 61.6%); Hispanic or Latino residents make up 7.2%, which is much lower than the state average (39.4%), and Asian share is much higher than both the state (15.4%) and national averages (6.0%).

Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:12,777Source: Census DHC
2023 ACS Population Estimate:12,464Source: Census ACS
2025 ZC Population Estimate:13,284Source: ZIP-Codes.com
Population Density:3,372.1 people per sq mile
Average Income:$186,023Source: Census ACS
Households:4,294Source: Census DHC
Average House Value:$2,000,000Source: Census ACS
Persons Per Household:2.96Source: Census DHC
Average Family Size:2.75Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--13,28113,29713,54013,61313,65413,67513,76913,53813,37513,17512,75512,55912,464
Decennial Census13,361------------------12,777------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 48.1

Male Median Age: 46.6

Female Median Age: 49.2

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male213362475584388256206231293401460510463449334284177165
Female211278402494340235200274382539537530506478400272190258
Total4246408771,0787284914065056759409971,040969927734556367423
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:3,75329.63%
Black:680.54%
Hispanic:*9157.22%
Asian:7,68960.71%
American Indian:230.18%
Hawaiian:110.09%
Other:2071.63%
Total:12,666100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:6,25148.92%46.6 years
Females:6,52651.08%49.2 years
Total:12,777100%48.1 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:6,44151.68%
Native, born in PR, Island Areas, or abroad:2101.68%
Foreign born, naturalized U.S. citizen:3,75630.13%
Foreign born, not a U.S. citizen:2,05746.64%
Total Population:12,464100%
Total Native Population:6,65153.36%
Total Foreign-born Population:5,81346.64%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $186,023, which is much higher than the national median ($78,538), is up $28,488 (18.1%) since 2011 and above its 2019 pre-pandemic level by $20,258. Family households earn a median of $231,989 versus $66,439 for nonfamily households (a difference of $165,550). By gender, male median income is $154,018 and female is $71,600, which is much higher than the national female median ($53,445), with a current gap of $82,418 that has widened from 2011 to 2023. The labor-force participation rate is 57.2%, which is below the state rate (63.9%). The unemployment rate is 4.0%, which is considerably lower than the state rate (6.4%). The largest occupation group is Management (66.1%).

Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$157,535$146,510$140,703$120,152$134,286$141,739$152,553$158,884$165,765$163,654$170,223$173,312$186,023
Median Family Income$166,792$165,518$167,208$155,897$158,389$160,690$167,423$171,830$183,272$183,403$199,875$199,931$231,989
Median NonFamily Income$64,668$57,083$65,174$31,250$0$0$31,625$33,185$55,929$60,758$57,333$51,875$66,439
Median Male Income$120,360$116,346$125,432$118,063$0$105,781$116,667$119,706$121,486$115,972$127,621$150,000$154,018
Median Female Income$63,261$80,739$83,398$85,625$0$93,194$84,033$78,659$81,729$77,188$68,026$65,030$71,600
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:5,43154.92%
Unemployed:2292.32%
Not In Labor Force:4,22942.76%
Total:9,889100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:3,59166.12%
Service:4057.46%
Sales and Office:1,07419.78%
Natural resources, construction, and maintenance:841.55%
Production, transportation, and material moving:2775.10%
Total Civilian Employed Population:5,431100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $2,000,001, which is much higher than the national median ($303,400), is up $1,000,000 (100.00%) since 2011 and above its 2019 pre-pandemic level by $0. The median gross rent is $3,501, which is considerably higher than the national median ($1,348), is up $1,500 (74.96%) since 2011 and above its 2019 pre-pandemic level by $283. Of occupied housing, owners make up 81.95% (54.19% with a mortgage, 45.81% free-and-clear) and renters 18.05% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 12.38%, which is far higher than the state rate (7.55%).

Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$1,000,001$1,000,001$1,000,001$1,000,001$1,387,500$1,489,700$1,514,800$1,862,500$2,000,001$2,000,001$2,000,001$2,000,001$2,000,001
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:00.00%
$1,000 to $1,499:91.27%
$1,500 to $1,999:8612.11%
$2,000 to $2,499:375.21%
$2,500 to $2,999:659.15%
$3,000 or more:41458.31%
No Rent:9913.94%
Total:710100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$2,001$2,001$2,001$2,001$3,390$3,501$3,501$3,501$3,218$3,501$3,501$3,501$3,501
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):1,74744.41%
Owner Occupied (free and clear, no mortgage):1,47737.54%
Renter Occupied:71018.05%
Total Occupied Housing Units:3,934100%

Occupied Housing Units:3,93487.62%
Vacant Housing Units (not graphed):55612.38%
Total Housing Units:4,490100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:4,39597.88%
Multi-Family Units:952.12%
Other Units:00.00%
Total Housing Units:4,490100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 80.20% of adults (25+) have a bachelor's degree or higher, which is far higher than the national rate (35.00%), well above both the state and national averages. High school or higher is 96.50%, which is markedly above the state rate (84.60%). The uninsured rate is 3.70%, which is far lower than the national rate (8.60%). Private coverage is 82.50%, which is notably higher than the state rate (64.00%). Public coverage is 25.70%, which is generally lower than the state rate (38.90%). The share of people in poverty is 3.30%, which is far lower than the national rate (8.70%), up 0.90 percentage points since 2011 and below its 2019 pre-pandemic level by 2.40 percentage points. This points to rising hardship - a weaker consumer base, greater strain on public services, and job-market headwinds. Among residents ages 3+, the largest enrollment group is elementary (39.00%). College enrollment is 24.91%, which is on par with the state rate (30.00%), meaning the community mirrors broader higher-education participation.

Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:1902.11%
9th to 12th grade, no diploma:1301.44%
High school graduate (includes equivalency):3644.04%
Some college, no degree:7948.80%
Associate's degree:3103.44%
Bachelor's degree:3,37637.44%
Graduate or professional degree:3,85442.74%
Total:9,018100%
High school or higher:8,69896.45%
Bachelor's degree or higher:7,23080.17%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:10,28073.71%
Public Insurance:3,20722.99%
No Insurance:4603.30%
Total:13,947100%
Has Health Insurance:13,48796.70%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty2.4%2.9%4.0%5.7%4.0%6.0%5.4%6.9%5.7%4.4%3.1%6.3%3.3%
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:38211.70%
Kindergarten:1604.90%
Elementary school (grades 1-8):1,27339.00%
High school (grades 9-12):63619.49%
College or graduate school:81324.91%
Total:3,264100%
Early Childhood:54216.61%
K-12 (Primary & Secondary School):2,06963.39%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 91108 supports both business and residential activity. According to the Business Census (2023), there are 653 business establishments, employing about 2,933 people with an annual payroll of $177,584,000. USPS data shows 4,488 residential mailboxes and 434 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:4,488Source: USPS
# Business Mailboxes:434Source: USPS
Total Delivery Receptacles:5,632Source: USPS
Single Family Delivery Units:4,488Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:653Source: CBP
1st Quarter Payroll:$41,311,000Source: CBP
Annual Payroll:$177,584,000Source: CBP
# of Employees:2,933Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 91108 is located in Los Angeles County, California, within the Los Angeles-Long Beach-Anaheim, CA Metropolitan Statistical Area (CBSA 31080) and California's 28th Congressional District. This Metro area has a population of 13,012,469 people, about 0.10% of whom live in ZIP Code 91108, and is subdivided into the Los Angeles-Long Beach-Glendale, CA division. It covers 3.789 sq mi of land and a water area of 0.007 sq mi.

CBSA Name:Los Angeles-Long Beach-Anaheim, CASource: Census
CBSA Number:31080Source: Census
CBSA Type:MetroSource: Census
CBSA Division:Los Angeles-Long Beach-Glendale, CA (CBSA Div 31084)Source: Census
CBSA Population:13,012,469Source: Census
MSA:Los Angeles-Riverside-Orange County, CASource: Census
Land Area:3.789 sq miSource: Census
Water Area:0.007 sq miSource: Census
Congressional District:28Source: USPS
Congressional Land Area:218.45 sq miSource: Census
PMSA:Los Angeles-Long Beach, CA PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:0668224Source: Census
Place Name:San Marino city; CaliforniaSource: Census

Adjacent & Nearby ZIP Codes


91109 | | 91107

Schools in ZIP Code 91108


ZIP Code 91108 is in the San Marino Unified School District, which serves grades Kindergarten thru 12th. There are 4 public schools and 2 private school(s) in this ZIP Code. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Carver Elementary 3100 Hntngtn Dr.
San Marino, CA 91108
District: San Marino Unified School District
Huntington Middle 1700 Hntngtn Dr.
San Marino, CA 91108
District: San Marino Unified School District
San Marino High 2701 Hntngtn Dr.
San Marino, CA 91108
District: San Marino Unified School District
Valentine Elementary 1650 Hntngtn Dr.
San Marino, CA 91108
District: San Marino Unified School District
Southwestern Academy 2800 Monterey Rd
San Marino, CA 91108
District: Private School
Ss Felicitas & Perpetua School 2955 Huntington Dr
San Marino, CA 91108
District: Private School

Colleges & Post Secondary Schools near ZIP Code 91108


California Institute Of Technology 1200 E California Blvd
Pasadena, CA 91125
Type: Post Secondary
American Fitness And Nutrition Academy 350 South Lake Avenue
Pasadena, CA 91101-3530
Type: Post Secondary
Pasadena City College 1570 E Colorado Blvd.
Pasadena, CA 91106-2003
Type: Post Secondary
California College Of Music 42 South Catalina Avenue
Pasadena, CA 91106-2403
Type: Post Secondary
Paul Mitchell The School-Pasadena 825 E Green Street
Pasadena, CA 91101
Type: Post Secondary
Alhambra Beauty College 200 W Main St
Alhambra, CA 91801
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2023 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 10/1/2025], https://nces.ed.gov