Arapahoe County, Colorado Demographics 2026
Arapahoe County, Colorado has a population of 659,844, the 3rd most populous county in Colorado. The median household income is $101,087 and the median home value is $561,200. The poverty rate is 8.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Arapahoe County Quick Facts
How Arapahoe County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 655,709 | 659,844 | +0.6% |
| Median household income | $97,215 | $101,087 | +4.0% |
| Median home value | $526,000 | $561,200 | +6.7% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 52 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Arapahoe County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Aurora | 394,432 | $88,368 | 11.9% | $469,100 |
| Centennial | 108,201 | $131,928 | 3.3% | $658,100 |
| Littleton | 44,710 | $98,839 | 6.1% | $630,600 |
| Englewood | 34,129 | $86,800 | 7.7% | $572,900 |
| Columbine | 25,478 | $131,232 | 4.3% | $617,200 |
| Four Square Mile | 23,024 | $80,903 | 14.8% | $474,200 |
| Greenwood Village | 15,420 | $149,029 | 3.1% | $1,237,800 |
| Cherry Creek | 10,721 | $153,776 | 5.0% | $888,900 |
| Cherry Hills Village | 6,354 | $250,000+ | 2.3% | $2,000,000+ |
| Sheridan | 6,005 | $60,608 | 14.0% | $380,600 |
| Dove Valley | 4,806 | $81,524 | 11.6% | $455,600 |
| Glendale | 4,531 | $71,250 | 16.1% | $413,500 |
| Bennett | 3,663 | $107,736 | 4.2% | $444,000 |
| Strasburg | 3,455 | $117,845 | 13.6% | $496,100 |
| Inverness | 2,934 | $109,135 | 4.5% | $862,300 |
| Holly Hills | 2,572 | $122,391 | 6.0% | $702,000 |
| Columbine Valley | 2,047 | $250,000+ | 0.0% | $1,578,900 |
| Byers | 1,726 | $93,571 | 3.3% | $402,100 |
| Deer Trail | 1,275 | $73,906 | 18.8% | $373,000 |
| Bow Mar | 1,047 | $241,583 | 3.5% | $2,000,000+ |
| Aetna Estates | 1,010 | $74,853 | 1.1% | $50,800 |
| Watkins | 847 | $158,173 | 3.4% | $650,500 |
| Foxfield | 659 | $200,938 | 2.0% | $1,065,900 |
| Comanche Creek | 283 | N/A | 0.0% | $672,900 |
| Brick Center | 105 | N/A | 0.0% | N/A |
| Peoria | 75 | N/A | 16.0% | $527,800 |
Explore Colorado Rankings
Population Overview
Arapahoe County is located in Colorado with a total population of 659,844. It is the 3rd most populous county out of 64 in Colorado. The county encompasses 26 Census-designated places.
Age Demographics
The median age in Arapahoe County is 37.3 years. This is 1% lower than the state median of 37.7 years.
Economy, Income & Housing
The median household income in Arapahoe County is $101,087. This is 6% higher than the state median of $95,470. It is also 25% higher than the national median of $80,734. The poverty rate stands at 8.6%. This is 8% lower than the state poverty rate of 9.4%. The unemployment rate is 5.0%. This is 7% higher than the state rate of 4.6%. The median home value is $561,200. Housing costs are 4% higher than the state median of $539,400. The home-value-to-income ratio is 5.6x. 64.7% of occupied housing units are owner-occupied. This homeownership rate is 2% lower than the state average of 66.2%.
Race & Ethnicity
The largest racial or ethnic group in Arapahoe County is White (non-Hispanic), making up 55.2% of the population. Hispanic or Latino residents account for 21.7%. The Black or African American population is significantly higher than the state average (10.5% vs 3.8%). The Asian population is significantly higher than the state average (6.0% vs 3.2%).
Education
46.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 2% higher than the state rate of 45.7%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.9%. Notably, 18.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All figures for Arapahoe County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Colorado and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Arapahoe County, Colorado?
Arapahoe County has a population of 659,844, making it the 3rd most populous county in Colorado.
What is the median income in Arapahoe County?
The median household income in Arapahoe County is $101,087 with a poverty rate of 8.6%.
How many cities are in Arapahoe County, Colorado?
Arapahoe County contains 26 Census-designated places.