Arapahoe County, Colorado demographics
Arapahoe County, Colorado (county FIPS 08005) has a median household income of $101,087 (±$1,532) and a total population of 659,844 in the American Community Survey 5-year estimates for 2020-2024.
Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 33 ZIP Code Tabulation Areas overlap the county (Census 2020).
Data as of Oct 22, 2026 (Olympus publication) · Markdown version
- Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
- ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.
ACS 5-year estimates, 2020-2024
Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.
| Metric | Estimate | Margin of error (90%) | ACS table |
|---|---|---|---|
| Total population | 659,844 | none (controlled estimate) | B01003 |
| Median age | 37.3 years | ±0.2 years | B01002 |
| Households | 257,232 | ±1,096 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $101,087 | ±$1,532 | B19013 |
| Median value of owner-occupied housing units | $561,200 | ±$5,168 | B25077 |
| Median gross rent | $1,891 | ±$21 | B25064 |
| Owner-occupied share of occupied housing units | 64.7% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 35.3% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 91.9% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 46.5% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 8.6% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 5% | none (derived from several estimates) | B23025 (derived) |
- Dollar values are in 2024 inflation-adjusted dollars.
- Percentages' margins of error are in percentage points (pp).
Geography
| Measure | Value |
|---|---|
| County FIPS | 08005 |
| Land area | 797.89 sq mi |
| Water area | 7.64 sq mi |
| Population density | 827 per sq mi of land |
| Geography vintage | 2024 Gazetteer |
ZIP codes (ZCTAs) in this county
ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.
| ZCTA | Share of county land | Share of ZCTA land | County is the ZCTA's primary county |
|---|---|---|---|
| 80105 | 29.4% | 59.2% | Yes |
| 80103 | 15.4% | 33.4% | |
| 80102 | 13.4% | 36.4% | |
| 80136 | 8.3% | 31.4% | |
| 80137 | 8.1% | 59.6% | Yes |
| 80018 | 4.4% | 100% | Yes |
| 80016 | 3.9% | 95.4% | Yes |
| 80015 | 2% | 100% | Yes |
| 80013 | 1.7% | 100% | Yes |
| 80112 | 1.6% | 72.9% | Yes |
| 80111 | 1.4% | 100% | Yes |
| 80017 | 1.1% | 100% | Yes |
| 80011 | 1.1% | 44.7% | |
| 80120 | 1% | 98.9% | Yes |
| 80113 | 1% | 100% | Yes |
| 80012 | 0.9% | 99.6% | Yes |
| 80121 | 0.9% | 100% | Yes |
| 80122 | 0.9% | 100% | Yes |
| 80014 | 0.8% | 90.1% | Yes |
| 80110 | 0.8% | 97.4% | Yes |
| 80123 | 0.5% | 31.4% | |
| 80010 | 0.3% | 51% | Yes |
| 80231 | 0.3% | 41.8% | |
| 80247 | 0.2% | 45.7% | |
| 80128 | 0.2% | 9.9% | |
| 80222 | 0.1% | 15.2% | |
| 80246 | 0.1% | 34% | |
| 80230 | 0% | 9.2% | |
| 80236 | 0% | 3.6% | |
| 80224 | 0% | 2.5% | |
| 80129 | 0% | 0.5% | |
| 80220 | 0% | 0.2% | |
| 80237 | 0% | 0.2% |
Sources
- American Community Survey 5-year estimates (Census Data API) — U.S. Census Bureau. ACS 5-year 2020-2024 (release acs5-2024:county), source date 2025-09-02. https://api.census.gov/data/2024/acs/acs5?get=NAME,B01003_001E,B01003_001M,B01002_001E,B01002_001M,B11001_001E,B11001_001M,B19013_001E,B19013_001M,B25077_001E,B25077_001M,B25064_001E,B25064_001M,B25003_001E,B25003_002E,B25003_003E,B15003_001E,B15003_017E,B15003_018E,B15003_019E,B15003_020E,B15003_021E,B15003_022E,B15003_023E,B15003_024E,B15003_025E,B17001_001E,B17001_002E,B23025_003E,B23025_005E&for=county:005&in=state:08
- Published by Olympus on Oct 22, 2026.
- Source data: U.S. Census Bureau. Works of the U.S. government are not subject to copyright in the United States.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
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curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/08005" -H "X-API-Key: $OLYMPUS_API_KEY"get_us_demographics {"county_fips":"08005"}