Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lakewood | 1 | 155,865 | 156,247 | -0.06% | 3,587 | 43.5 | City |
| Centennial | 2 | 106,445 | 108,196 | -0.41% | 3,530 | 30.2 | City |
| Highlands Ranch | 3 | 102,314 | 107,017 | 0.39% | 4,216 | 24.3 | CDP |
| Littleton | 4 | 44,069 | 45,595 | -0.86% | 3,492 | 12.6 | City |
| Englewood | 5 | 34,492 | 33,623 | 0.63% | 5,257 | 6.6 | City |
| Ken Caryl | 6 | 33,683 | 33,815 | 0.27% | 3,426 | 9.8 | CDP |
| Columbine | 7 | 26,217 | 25,892 | 0.53% | 3,952 | 6.6 | CDP |
| Four Square Mile | 8 | 24,990 | 21,993 | 7.69% | 9,249 | 2.7 | CDP |
| Greenwood Village | 9 | 15,057 | 15,649 | -0.97% | 1,822 | 8.3 | City |
| Lone Tree | 10 | 13,990 | 14,280 | -0.52% | 1,426 | 9.8 | City |
| Cherry Creek | 11 | 11,163 | 11,503 | 0.03% | 6,684 | 1.7 | CDP |
| Cherry Hills Village | 12 | 6,221 | 6,428 | -0.83% | 1,002 | 6.2 | City |
| Sheridan | 13 | 5,842 | 6,104 | -1.12% | 2,626 | 2.2 | City |
| Dove Valley | 14 | 5,623 | 4,943 | 0.48% | 1,795 | 3.1 | CDP |
| Meridian | 15 | 5,372 | 4,792 | 3.29% | 2,097 | 2.6 | CDP |
| Glendale | 16 | 4,396 | 4,599 | -1.15% | 7,739 | 0.6 | City |
| Inverness | 17 | 2,979 | 1,863 | 3.62% | 2,636 | 1.1 | CDP |
| Holly Hills | 18 | 2,848 | 2,815 | 0.85% | 4,910 | 0.6 | CDP |
| Columbine Valley | 19 | 1,735 | 1,502 | 3.46% | 1,767 | 1.0 | Town |
| Byers | 20 | 1,714 | 1,338 | 2.33% | 150 | 11.4 | CDP |
| Deer Trail | 21 | 1,648 | 1,108 | 8.92% | 1,310 | 1.3 | Town |
| Aetna Estates | 22 | 1,254 | 1,231 | 2.45% | 9,573 | 0.1 | CDP |
| Bow Mar | 23 | 813 | 852 | -1.21% | 1,228 | 0.7 | Town |
| Foxfield | 24 | 728 | 754 | -0.95% | 550 | 1.3 | Town |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Lakewood is the largest city in Arapahoe County.
Foxfield is the smallest city in Arapahoe County.
There are 24 cities in Arapahoe County, Colorado.