There are 47 cities in Jefferson County, Colorado.
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 | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Denver | 1 | Colorado | 708,948 | 717,556 | -0.3% | 4,631 | 153.07 |
| Lakewood | 2 | Colorado | 156,004 | 156,236 | -0.04% | 3,590 | 43.46 |
| Arvada | 3 | Colorado | 118,768 | 124,394 | -1.17% | 3,047 | 38.97 |
| Westminster | 4 | Colorado | 112,764 | 116,302 | -0.78% | 3,566 | 31.62 |
| Highlands Ranch | 5 | Colorado | 98,066 | 107,017 | -1.73% | 4,041 | 24.27 |
| Broomfield | 6 | Colorado | 77,758 | 74,484 | 1.06% | 2,359 | 32.97 |
| Littleton | 7 | Colorado | 43,924 | 45,586 | -0.94% | 3,481 | 12.62 |
| Dakota Ridge | 8 | Colorado | 33,980 | 34,655 | -0.37% | 3,619 | 9.39 |
| Ken Caryl | 9 | Colorado | 33,195 | 33,815 | -0.46% | 3,376 | 9.83 |
| Wheat Ridge | 10 | Colorado | 31,377 | 32,381 | -0.79% | 3,358 | 9.34 |
| Lafayette | 11 | Colorado | 30,976 | 30,422 | 0.45% | 3,356 | 9.23 |
| Columbine | 12 | Colorado | 25,972 | 25,892 | 0.06% | 3,915 | 6.63 |
| Golden | 13 | Colorado | 20,533 | 20,387 | 0.18% | 2,131 | 9.63 |
| Louisville | 14 | Colorado | 19,947 | 21,173 | -1.51% | 2,502 | 7.97 |
| Sherrelwood | 15 | Colorado | 19,426 | 19,082 | 0.45% | 7,919 | 2.45 |
| Superior | 16 | Colorado | 13,479 | 13,105 | 0.7% | 3,427 | 3.93 |
| Fairmount | 17 | Colorado | 11,247 | 9,549 | 3.93% | 1,850 | 6.08 |
| Berkley | 18 | Colorado | 11,071 | 11,299 | -0.51% | 3,078 | 3.60 |
| Roxborough Park | 19 | Colorado | 9,110 | 9,004 | 0.3% | 987 | 9.23 |
| Evergreen | 20 | Colorado | 8,469 | 9,475 | -2.88% | 735 | 11.52 |
| Applewood | 21 | Colorado | 7,670 | 8,300 | -2.01% | 1,887 | 4.07 |
| West Pleasant View | 22 | Colorado | 5,311 | 5,417 | 1.08% | 3,442 | 1.54 |
| Shaw Heights | 23 | Colorado | 5,078 | 5,987 | -3.61% | 7,512 | 0.68 |
| Edgewater | 24 | Colorado | 4,795 | 5,005 | -1.07% | 6,899 | 0.69 |
| Genesee | 25 | Colorado | 3,993 | 4,099 | -0.65% | 603 | 6.62 |
| Sterling Ranch | 26 | Colorado | 3,279 | 521 | 26.65% | 593 | 5.53 |
| Coal Creek | 27 | Colorado | 2,257 | 2,605 | -3.71% | 240 | 9.39 |
| Columbine Valley | 28 | Colorado | 1,770 | 1,502 | 3.93% | 1,802 | 0.98 |
| Perry Park | 29 | Colorado | 1,603 | 1,821 | -3.26% | 187 | 8.55 |
| Indian Hills | 30 | Colorado | 1,527 | 1,363 | 2.76% | 281 | 5.42 |
| Upper Bear Creek | 31 | Colorado | 1,043 | 799 | 6.21% | 276 | 3.79 |
| Kittredge | 32 | Colorado | 1,017 | 954 | -0.2% | 540 | 1.88 |
| Aspen Park | 33 | Colorado | 967 | 1,045 | -1.93% | 392 | 2.46 |
| Floyd Hill | 34 | Colorado | 888 | 824 | 1.84% | 141 | 6.29 |
| Bow Mar | 35 | Colorado | 812 | 854 | -1.22% | 1,227 | 0.66 |
| Pine Valley | 36 | Colorado | 709 | 343 | 14.91% | 861 | 0.82 |
| Brook Forest | 37 | Colorado | 591 | 479 | 4.97% | 425 | 1.39 |
| Mountain View | 38 | Colorado | 513 | 541 | -1.35% | 5,516 | 0.09 |
| Upper Witter Gulch | 39 | Colorado | 497 | 725 | -10.29% | 546 | 0.91 |
| Idledale | 40 | Colorado | 366 | 292 | 5.48% | 1,321 | 0.28 |
| Morrison | 41 | Colorado | 352 | 398 | -3.03% | 214 | 1.65 |
| Echo Hills | 42 | Colorado | 310 | 414 | -7.74% | 546 | 0.57 |
| Westcreek | 43 | Colorado | 289 | 273 | 1.4% | 238 | 1.22 |
| Louviers | 44 | Colorado | 268 | 381 | 0.38% | 170 | 1.58 |
| East Pleasant View | 45 | Colorado | 140 | 128 | 2.19% | 1,261 | 0.11 |
| Lakeside | 46 | Colorado | 16 | 18 | 0% | 85 | 0.19 |
| Sedalia | 47 | Colorado | 0 | 103 | 0% | 0 | 1.36 |
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.
Denver is the largest city in Jefferson County.
Sedalia is the smallest city in Jefferson County.
There are 47 cities in Jefferson County, Colorado.