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Where am ILOCATED

Arapahoe County, Colorado

Arapahoe County, Colorado, has 673,820 residents (July 2025 estimate). Its county seat is Littleton. It uses Mountain Time and covers 798 sq mi (2,067 km²) of land.

DenverColorado Springs
Arapahoe County in Colorado
Adams CountyDenver CountyAuroraCentennialEnglewood
Arapahoe County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
673,820
Land area
798 sq mi (2,067 km²)
County seat or government
Littleton
Time zone
Mountain TimeUTC-07:00 in January; UTC-06:00 in July
Median household income
$101,087 ± $1,532
Median home value
$561,200 ± $5,168
Median rent, with utilities
$1,891 ± $21
Homes lived in by their owners
64.7% ± 0.8 points
County type
County
Metro or micro area
Denver-Aurora-Centennial, CO metro areaCentral county
Water area
7.64 sq mi (19.8 km²)
State
Colorado
County code (FIPS)
08005
Coordinates (central point)
39.644554, -104.331706
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Arapahoe County

Time zoneLocal time and UTC offsetNext clock change
Mountain TimeAmerica/DenverUTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 8013480,302 people
  2. 8001373,248 people
  3. 8001572,316 people
  4. 8001668,268 people
  5. 8001153,695 people
  6. 8001251,052 people
  7. 8012344,549 people
  8. 8001042,439 people
  9. 8001740,584 people
  10. 8001439,496 people
  11. 8022037,203 people
  12. 8013836,895 people
All 35
  1. 8011236,816 people
  2. 8012836,712 people
  3. 8023135,883 people
  4. 8012232,195 people
  5. 8011131,561 people
  6. 8012930,223 people
  7. 8024729,760 people
  8. 8012029,725 people
  9. 8022223,838 people
  10. 8011023,825 people
  11. 8023723,384 people
  12. 8011322,976 people
  13. 8022419,352 people
  14. 8001819,072 people
  15. 8012118,029 people
  16. 8023616,863 people
  17. 8024613,097 people
  18. 8023010,449 people
  19. 801026,690 people
  20. 801366,144 people
  21. 801033,215 people
  22. 801052,182 people
  23. 801371,689 people

35 ZIP Code areas overlap Arapahoe County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Arapahoe County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Arapahoe County, largest first

  1. Cherry Creek School District 5324,012 people
  2. Adams-Arapahoe School District 28J243,618 people
  3. Littleton School District 696,878 people
  4. Englewood School District 128,098 people
  5. Sheridan School District 28,257 people
  6. Bennett School District 29-J7,610 people
  7. Strasburg School District 31J6,175 people
  8. Byers School District 32J3,144 people
  9. Deer Trail School District 26J1,712 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Aurora, Colorado (city)394,432 people
  2. Centennial, Colorado (city)108,201 people
  3. Littleton, Colorado (city)44,710 people
  4. Englewood, Colorado (city)34,129 people
  5. Columbine, Colorado (CDP)25,478 people
  6. Four Square Mile, Colorado (CDP)23,024 people
  7. Greenwood Village, Colorado (city)15,420 people
  8. Cherry Creek, Colorado (CDP)10,721 people
  9. Cherry Hills Village, Colorado (city)6,354 people
  10. Sheridan, Colorado (city)6,005 people
  11. Dove Valley, Colorado (CDP)4,806 people
  12. Glendale, Colorado (city)4,531 people
All 26
  1. Bennett, Colorado (town)3,663 people
  2. Strasburg, Colorado (CDP)3,455 people
  3. Inverness, Colorado (CDP)2,934 people
  4. Holly Hills, Colorado (CDP)2,572 people
  5. Columbine Valley, Colorado (town)2,047 people
  6. Byers, Colorado (CDP)1,726 people
  7. Deer Trail, Colorado (town)1,275 people
  8. Bow Mar, Colorado (town)1,047 people
  9. Aetna Estates, Colorado (CDP)1,010 people
  10. Watkins, Colorado (CDP)847 people
  11. Foxfield, Colorado (town)659 people
  12. Comanche Creek, Colorado (CDP)283 people
  13. Brick Center, Colorado (CDP)105 people
  14. Peoria, Colorado (CDP)75 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Adams County, Colorado16 mi north
  2. Elbert County, Colorado26 mi southeast
  3. Denver County, Colorado30 mi west
  4. Douglas County, Colorado39 mi southwest
  5. Jefferson County, Colorado49 mi west
  6. Lincoln County, Colorado63 mi southeast
  7. Washington County, Colorado64 mi east

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.