ZIP Code 80104 in Castle Rock, CO

Data Last Updated: October 1, 2025
City:Castle Rock, Colorado
County:Douglas County
Timezone:Mountain (GMT -07:00)
Local Time:7:32:24 PM
Population:34,727 [See All]
Area Codes:303 / 720 / 983
Classification:Standard [Normal Street Delivery]
Coordinates:39.3039, -104.8215
Land Area:70.673 sq mi
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Population & Demographics


ZIP Code 80104 has 34,727 residents and 12,552 households (average 2.75 persons per household). The median age is 37.7 years, about the same as the state (37.2) and slightly younger than the nation (38.8). The gender split is 49.9% male and 50.1% female, which is about the same as the national male share (49.1%). Largest groups are White (82.7%, much higher than the state average of 70.7% and well above the national average of 61.6%) and Hispanic or Latino (11.7%); Hispanic or Latino residents make up 11.7%, which is much lower than the state average (21.9%).

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:34,727Source: Census DHC
2023 ACS Population Estimate:36,461Source: Census ACS
2025 ZC Population Estimate:43,271Source: ZIP-Codes.com
Population Density:491.4 people per sq mile
Average Income:$131,359Source: Census ACS
Households:12,552Source: Census DHC
Average House Value:$586,800Source: Census ACS
Persons Per Household:2.75Source: Census DHC
Average Family Size:2.63Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--27,15527,06127,35928,55828,20929,03330,45830,71831,52232,42733,99135,08436,461
Decennial Census27,588------------------34,727------
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: 37.7

Male Median Age: 36.7

Female Median Age: 38.7

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male1,0921,2821,4011,2979041,0161,2101,3521,1491,2331,1731,141977773636417158132
Female1,0201,1631,3221,1368051,0711,1991,3351,2041,2321,1651,205998927726440225211
Total2,1122,4452,7232,4331,7092,0872,4092,6872,3532,4652,3382,3461,9751,7001,362857383343
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:28,70781.36%
Black:4541.29%
Hispanic:*4,07211.54%
Asian:6291.78%
American Indian:2580.73%
Hawaiian:460.13%
Other:1,1173.17%
Total:35,283100%
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:17,34349.94%36.7 years
Females:17,38450.06%38.7 years
Total:34,727100%37.7 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:34,01693.29%
Native, born in PR, Island Areas, or abroad:7492.05%
Foreign born, naturalized U.S. citizen:1,1683.20%
Foreign born, not a U.S. citizen:5284.65%
Total Population:36,461100%
Total Native Population:34,76595.35%
Total Foreign-born Population:1,6964.65%
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 $131,359, which is much higher than the national median ($78,538), is up $50,088 (61.6%) since 2011 and above its 2019 pre-pandemic level by $28,859. Family households earn a median of $153,984 versus $65,009 for nonfamily households (a difference of $88,975). By gender, male median income is $94,058 and female is $72,751, which is markedly greater than the national female median ($53,445), with a current gap of $21,307 that has widened from 2011 to 2023. The labor-force participation rate is 74.5%, which is much higher than the national rate (63.5%). The unemployment rate is 4.1%, which is better than the national rate (5.2%). The largest occupation group is Management (53.1%).

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$81,271$81,124$81,017$82,129$84,273$86,450$92,441$97,336$102,500$101,496$108,758$123,337$131,359
Median Family Income$90,869$92,276$91,315$91,548$97,029$98,370$104,057$109,311$115,762$123,286$131,527$145,258$153,984
Median NonFamily Income$50,154$44,567$43,596$44,824$42,842$45,614$46,967$50,478$49,853$50,810$50,264$57,386$65,009
Median Male Income$67,336$66,111$70,439$69,658$71,808$68,444$69,337$69,653$70,456$74,353$82,349$90,231$94,058
Median Female Income$46,859$45,765$46,117$46,801$49,989$52,554$53,295$52,339$54,533$53,553$56,391$64,592$72,751
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:20,71271.09%
Unemployed:8823.03%
Not In Labor Force:7,54225.89%
Total:29,136100%
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:10,99253.07%
Service:2,92914.14%
Sales and Office:4,18820.22%
Natural resources, construction, and maintenance:1,0945.28%
Production, transportation, and material moving:1,5097.29%
Total Civilian Employed Population:20,712100%
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 $586,800, which is far above the national median ($303,400), is up $329,600 (128.15%) since 2011 and above its 2019 pre-pandemic level by $195,700. The median gross rent is $1,816, which is considerably higher than the national median ($1,348), is up $743 (69.25%) since 2011 and above its 2019 pre-pandemic level by $291. Of occupied housing, owners make up 80.16% (83.31% with a mortgage, 16.69% free-and-clear) and renters 19.84% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 3.29%, which is far lower than the national rate (10.43%).

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$257,200$253,700$256,700$259,000$273,300$299,700$326,800$363,900$391,100$419,100$446,300$518,500$586,800
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:813.03%
$500 to $999:1716.39%
$1,000 to $1,499:40815.25%
$1,500 to $1,999:97936.58%
$2,000 to $2,499:41715.58%
$2,500 to $2,999:27810.39%
$3,000 or more:2258.41%
No Rent:1174.37%
Total:2,676100%
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$1,073$1,109$1,168$1,253$1,214$1,277$1,392$1,463$1,525$1,608$1,680$1,752$1,816
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):9,00666.78%
Owner Occupied (free and clear, no mortgage):1,80413.38%
Renter Occupied:2,67619.84%
Total Occupied Housing Units:13,486100%

Occupied Housing Units:13,48696.71%
Vacant Housing Units (not graphed):4593.29%
Total Housing Units:13,945100%
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:11,36181.47%
Multi-Family Units:2,50617.97%
Other Units:780.56%
Total Housing Units:13,945100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 54.20% 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 97.10%, which is far higher than the national rate (89.40%). The uninsured rate is 4.50%, which is falls below the national rate (8.60%). Public coverage is 23.80%, which is falls below the national rate (36.30%). The share of people in poverty is 2.60%, which is far lower than the national rate (8.70%), down 0.20 percentage points since 2011 and below its 2019 pre-pandemic level by 0.60 percentage points. Poverty has been broadly stable, which may reflect structural barriers or offsetting gains and setbacks. Among residents ages 3+, the largest enrollment group is elementary (39.87%). College enrollment is 25.48%, which is on par with the state rate (27.40%), 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:1590.64%
9th to 12th grade, no diploma:5542.23%
High school graduate (includes equivalency):3,26413.12%
Some college, no degree:5,27221.20%
Associate's degree:2,1368.59%
Bachelor's degree:8,67734.89%
Graduate or professional degree:4,80819.33%
Total:24,870100%
High school or higher:24,15797.13%
Bachelor's degree or higher:13,48554.22%
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:30,24974.72%
Public Insurance:8,61621.28%
No Insurance:1,6163.99%
Total:40,481100%
Has Health Insurance:38,86596.01%
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 Poverty2.8%3.3%4.0%5.5%5.6%4.9%3.9%3.7%3.2%2.8%3.2%3.0%2.6%
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:4735.38%
Kindergarten:4885.55%
Elementary school (grades 1-8):3,50339.87%
High school (grades 9-12):2,08323.71%
College or graduate school:2,23925.48%
Total:8,786100%
Early Childhood:96110.94%
K-12 (Primary & Secondary School):6,07469.13%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 80104 supports both business and residential activity. According to the Business Census (2023), there are 1,153 business establishments, employing about 9,236 people with an annual payroll of $487,865,000. USPS data shows 15,735 residential mailboxes and 729 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:15,735Source: USPS
# Business Mailboxes:729Source: USPS
Total Delivery Receptacles:17,460Source: USPS
Single Family Delivery Units:4,431Source: USPS
Multi Family Delivery Units:1,429Source: USPS
# of Businesses:1,153Source: CBP
1st Quarter Payroll:$119,542,000Source: CBP
Annual Payroll:$487,865,000Source: CBP
# of Employees:9,236Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 80104 is located in Douglas County, Colorado, within the Denver-Aurora-Centennial, CO Metropolitan Statistical Area (CBSA 19740) and Colorado's 4th Congressional District. This Metro area has a population of 2,977,085 people, about 1.17% of whom live in ZIP Code 80104. It covers 70.673 sq mi of land and a water area of 0 sq mi.

CBSA Name:Denver-Aurora-Centennial, COSource: Census
CBSA Number:19740Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:2,977,085Source: Census
MSA:Denver-Boulder-Greeley, CO CMSASource: Census
Land Area:70.673 sq miSource: Census
Water Area:--Source: Census
Congressional District:04Source: USPS
Congressional Land Area:38102.67 sq miSource: Census
PMSA:Denver, CO PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:0812415Source: Census
Place Name:Castle Rock town; ColoradoSource: Census

Adjacent & Nearby ZIP Codes


80105 | | 80103

Schools in ZIP Code 80104


ZIP Code 80104 is in the Douglas County School District RE-1, which serves grades Pre-Kindergarten thru 12th. There are 15 public schools and 1 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.

Castle Rock Elementary School 1103 Canyon Drive
Castle Rock, CO 80104
District: Douglas County School District RE-1
Douglas County High School 2842 Front Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
South Ridge Elementary An Ib World School 1100 South Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Academy Charter School 1551 Prairie Hawk Drive
Castle Rock, CO 80104
District: Douglas County School District RE-1
Renaissance Expedition Learn Outward Bound School 3960 Trailboss Lane
Castle Rock, CO 80104
District: Douglas County School District RE-1
Early Childhood Center 3950 Trail Boss Lane
Castle Rock, CO 80104
District: Douglas County School District RE-1
Rock Ridge Elementary School 400 North Heritage Road
Castle Rock, CO 80104
District: Douglas County School District RE-1
Flagstone Elementary School 104 Lovington Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Daniel C Oakes High School--Castle Rock 15 South Gilbert Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Mesa Middle School 365 Mitchell Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Sage Canyon Elementary 2420 Autumn Sage Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Cloverleaf Home Education 312 Cantril Street Ste 101
Castle Rock, CO 80104
District: Douglas County School District RE-1
Cantril 312 Cantril Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
World Compass Academy 2400 South Perry Street
Castle Rock, CO 80104
District: Douglas County School District RE-1
Renaissance Secondary School 3954 Trail Boss Lane
Castle Rock, CO 80104
District: Douglas County School District RE-1
Montessori School Of Castle Rock 15 S Gilbert St Suites C&D
Castle Rock, CO 80104
District: Private School

Colleges & Post Secondary Schools near ZIP Code 80104


Stacey James Institute 16534 Keystone Boulevard, Unit C
Parker, CO 80134-3358
Type: Post Secondary
Rocky Vista University 8401 S Chambers Road
Parker, CO 80134
Type: Post Secondary
Columbia College - Denver 6892 S. Yosemite Ct Suite 3-100
Centennial, CO 80112-1464
Type: Post Secondary
United States Air Force Academy 2304 Cadet Drive, Suite 3800
USAF Academy, CO 80840-5002
Type: Post Secondary
Denver Seminary 6399 S. Santa Fe Drive
Littleton, CO 80120
Type: Post Secondary
Arapahoe Community College 5900 S. Santa Fe Dr.
Littleton, CO 80160-9002
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