County · Colorado

Arapahoe County, Colorado

Arapahoe County, Colorado. Arapahoe County had 673,820 residents in 2025 by the Census Bureau's estimate, up 2.9% since 2020, slower than Colorado (+4.1%). It holds 26 places (13 cities, villages and boroughs and 13 census-designated) and 161 census tracts. GEOID 08005.

Arapahoe County is one of the 10 counties of the Denver-Aurora-Centennial, CO metropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

673,820

Census Bureau estimate (no margin published)
2020 Census count: 655,070 · ACS 2020-2024: 659,844

Median household income

$101,087

±$1,532 (90% margin)
Colorado: $95,470

Median home value

$561,200

±$5,168 (90% margin)
Colorado: $539,400

Median gross rent

$1,891

±$21 (90% margin)
Colorado: $1,761

How many people live in Arapahoe County, and is it growing?

The 2020 Census counted 655,070 residents in Arapahoe County. The Census Bureau estimates 673,820 for July 1, 2025, up 2.9% since 2020, slower than Colorado (+4.1%). The 2020-2024 American Community Survey puts the population at 659,844 over 798 square miles of land.

July 2020→2021 +1,751 (657,020)
2021→2022 +2,452 (659,472)
2022→2023 +6,306 (665,778)
2023→2024 +9,982 (675,760)
2024→2025 −1,940 (673,820)

Arapahoe County in Colorado. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Arapahoe County	Colorado	Change since 2015-2019
Total population	659,844	5,862,189	+15,284
Households	257,232±1,096	2,374,218	+16,928
Average household size	2.55±0.01	2.42	−0.11
Housing units	269,345±175	2,589,053	+18,133

Arapahoe County's population since 2000

From 487,967 in 2000 to 673,820 in 2025: up 38.1%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 487,967
2005 (estimate) 524,466
2010 Census 572,003
2015 (estimate) 631,688
2020 Census 655,070
2025 (estimate) 673,820

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Arapahoe County?

Arapahoe County holds 26 places: 13 cities, villages and boroughs (incorporated places) and 13 census-designated places. The largest is Aurora with 410,053 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Arapahoe County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Aurora	city	386,261	394,432±85	$88,368	$469,100	11.9%	87%
Centennial	city	108,418	108,201±78	$131,928	$658,100	3.3%	100%
Littleton	city	45,652	44,710±388	$98,839	$630,600	6.1%	94%
Englewood	city	33,659	34,129±40	$86,800	$572,900	7.7%	100%
Four Square Mile	CDP	22,872	23,024±1,613	$80,903	$474,200	14.8%	100%
Greenwood Village	city	15,691	15,420±52	$149,029	$1,237,800	3.1%	100%
Cherry Creek	CDP	11,488	10,721±896	$153,776	$888,900	5.0%	100%
Cherry Hills Village	city	6,442	6,354±20	$250,000 or more	$2,000,000 or more	2.3%	100%
Sheridan	city	6,105	6,005±27	$60,608	$380,600	14.0%	100%
Dove Valley	CDP	5,640	4,806±755	$81,524	$455,600	11.5%	100%
Glendale, Arapahoe County	city	4,613	4,531±30	$71,250	$413,500	16.1%	100%
Holly Hills	CDP	2,683	2,572±309	$122,391	$702,000	6.1%	100%
Inverness	CDP	2,226	2,934±534	$109,135	$862,300	4.5%	100%
Columbine	CDP	25,229	25,478±1,564	$131,232	$617,200	4.3%	8%
Columbine Valley	town	1,502	2,047±333	$250,000 or more	$1,578,900	0.0%	100%
Aetna EstatesGEOID 0800620	CDP	1,496	1,010±542	$74,853	$50,800	1.1%	100%
Byers	CDP	1,322	1,726±657	$93,571	$402,100	3.3%	100%
Strasburg	CDP	3,307	3,455±898	$117,845	$496,100	13.6%	38%
Deer Trail	town	1,068	1,275±352	$73,906	$373,000	18.8%	100%
Foxfield	town	754	659±163	$200,938	$1,065,900	2.0%	100%
WatkinsGEOID 0882900	CDP	682	847±296	$158,173	$650,500	3.4%	87%
Bow Mar	town	853	1,047±205	$241,583	$2,000,000 or more	3.5%	69%
Comanche CreekGEOID 0816465	CDP	442	283±227	not published	$672,900	0.0%	100%
Bennett	town	2,862	3,663±184	$107,736	$444,000	4.2%	15%
PeoriaGEOID 0858510	CDP	153	75±49	not published	$527,800	16.0%	100%
Brick CenterGEOID 0808530	CDP	105	105±96	not published	not published	0.0%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Arapahoe County?

The median resident of Arapahoe County is 37.3 years old; 22.6% are under 18 and 14.4% are 65 or older. The largest group is non-Hispanic white residents at 55.2%, then Hispanic or Latino residents (of any race) at 21.7%. 16.5% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Arapahoe County	Colorado	Change since 2015-2019
Median age	37.3±0.2	37.7	+0.7
Under 18 years	22.6%	21.0%	–
65 years and over	14.4%±0.1 pts	15.6%	–
Hispanic or Latino (any race)	21.7%	22.5%	+2.5 pts
White alone, not Hispanic	55.2%±0.2 pts	64.8%	−5.1 pts
Black or African American alone, not Hispanic	10.5%±0.3 pts	3.8%	no clear change
Asian alone, not Hispanic	6.0%±0.2 pts	3.2%	no clear change
American Indian and Alaska Native alone, not Hispanic	0.3%±0.1 pts	0.4%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.3%±0.1 pts	0.1%	–
Two or more races, not Hispanic	5.5%±0.3 pts	4.6%	–
Some other race alone, not Hispanic	0.5%±0.1 pts	0.5%	–
Born outside the United States	16.5%±0.5 pts	9.8%	+1.4 pts
Speak a language other than English at home (age 5+)	23.4%±0.6 pts	16.2%	–
Civilian veterans (age 18+)	6.7%±0.3 pts	7.5%	–
With a disability	10.9%±0.3 pts	11.4%	–
No health insurance coverage	9.3%±0.4 pts	7.7%	+1.6 pts
High school graduate or higher (age 25+)	91.9%±0.3 pts	92.9%	–
Bachelor's degree or higher (age 25+)	46.5%±0.6 pts	45.7%	+3.7 pts
Graduate or professional degree (age 25+)	18.0%±0.5 pts	17.6%	–
Moved from another state in the past year	2.8%±0.2 pts	3.8%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Arapahoe County earn?

Half of Arapahoe County's 257,232 households earn less than $101,087 a year (±$1,532), against $95,470 in Colorado. In 2015-2019 the median was $95,341 in 2024 dollars, so it rose by $5,746 after inflation. 8.6% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Arapahoe County	Colorado	Change since 2015-2019
Median household income	$101,087±$1,532	$95,470	+$5,746
Mean household income	$136,289±$1,952	$128,255	–
Per capita income	$53,774±$743	$52,636	+$4,001
People below the poverty line	8.6%±0.5 pts	9.4%	no clear change
Children under 18 below the poverty line	11.9%±1.2 pts	11.1%	+1.8 pts
Households receiving SNAP	7.7%±0.5 pts	8.5%	–
Households with a broadband subscription	94.7%±0.3 pts	93.5%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Arapahoe County?

Owners occupy 64.7% of Arapahoe County's occupied homes and renters 35.3%. The median owner-occupied home is valued at $561,200 by its owner (±$5,168). The median renter pays $1,891 a month including utilities, and 45.4% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Arapahoe County	Colorado	Change since 2015-2019
Median home value (owner-occupied)	$561,200±$5,168	$539,400	+$120,365
Median gross rent	$1,891±$21	$1,761	+$180
Renters paying 35% or more of income on rent	45.4%±1.6 pts	42.7%	+3.3 pts
Median monthly owner costs, with a mortgage	$2,423±$28	$2,326	–
Owner-occupied homes	64.7%±0.8 pts	66.2%	+1.2 pts
Housing units	269,345±175	2,589,053	+18,133
Homeowner vacancy rate	0.6%±0.2 pts	0.8%	–
Rental vacancy rate	5.5%±0.6 pts	5.1%	–
Single-family detached homes	56.1%±0.6 pts	61.4%	–
Mobile homes	0.7%±0.1 pts	3.5%	–
Built 2020 or later	2.3%±0.2 pts	3.0%	–
Built 1939 or earlier	1.7%±0.2 pts	7.0%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Arapahoe County building?

Builders took permits for 3,599 new housing units across Arapahoe County in 2025 (1,735 single-family), 5.3 per 1,000 residents.

2019 3,532 units
2020 4,116 units
2021 5,519 units
2022 4,325 units
2023 5,479 units
2024 3,856 units
2025 3,599 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Arapahoe County get to work?

65.5% of Arapahoe County's workers drive alone and 21.0% work from home. The average trip to work takes 27.1 minutes. The unemployment rate in 2020-2024 averaged 5.0%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Arapahoe County	Colorado	Change since 2015-2019
In the labor force (age 16+)	71.7%±0.4 pts	68.6%	–
Unemployment rate	5.0%±0.3 pts	4.6%	+0.9 pts
Drove alone to work	65.5%±0.7 pts	65.1%	–
Carpooled	7.7%±0.4 pts	7.7%	–
Public transportation	2.5%±0.3 pts	1.6%	–
Walked	1.4%±0.2 pts	2.5%	–
Worked from home	21.0%±0.6 pts	21.0%	+13.6 pts
Mean travel time to work	27.1 min±0.4	25.2 min	−1.0 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Arapahoe County's census tracts?

Arapahoe County is divided into 161 census tracts. Among those with a reliable estimate, median household income runs from $39,355 (Tract 73.02) to $250,000 or more (Tract 67.05).

All 161 census tracts of Arapahoe County, with their figures

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Arapahoe County compare with Colorado's other counties?

Arapahoe County's rank among Colorado's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	3rd of 64
Growth 2020-2025	29th of 64
Residents per square mile	3rd of 64
Median household income	11th of 64
Median home value	20th of 64
Median gross rent	9th of 63
Poverty rate	42nd of 63
Bachelor's degree or higher	22nd of 64
Median age	57th of 64

Every county in Colorado

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Arapahoe County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.