Data / Rankings / Population / Cities in Colorado

Cities in Colorado by population

Denver, CO had the highest population of 54 cities in 2024, at 741,591. Fort Lupton, CO had the lowest, at 9,973. The median was 29,979 and the figure for Colorado was 5.99 million. Source: the U.S. Census Bureau.

Highest741,591Denver, CO
Lowest9,973Fort Lupton, CO
Median29,97954 cities
Colorado5,988,502History

All cities, 2024

Denver, CO: 741,591 personsDenver, CO741,591Colorado Springs, CO: 492,455 personsColorado Springs, CO492,455Aurora, CO: 408,325 personsAurora, CO408,325Fort Collins, CO: 170,727 personsFort Collins, CO170,727Lakewood, CO: 157,395 personsLakewood, CO157,395Thornton, CO: 148,370 personsThornton, CO148,370Arvada, CO: 122,310 personsArvada, CO122,310Westminster, CO: 116,293 personsWestminster, CO116,293Greeley, CO: 114,771 personsGreeley, CO114,771Pueblo, CO: 111,348 personsPueblo, CO111,348Centennial, CO: 109,812 personsCentennial, CO109,812Boulder, CO: 106,557 personsBoulder, CO106,557Longmont, CO: 99,600 personsLongmont, CO99,600Castle Rock, CO: 83,004 personsCastle Rock, CO83,004Loveland, CO: 80,976 personsLoveland, CO80,976Broomfield, CO: 78,403 personsBroomfield, CO78,403Commerce City, CO: 71,038 personsCommerce City, CO71,038Grand Junction, CO: 70,588 personsGrand Junction, CO70,588Parker, CO: 65,216 personsParker, CO65,216Littleton, CO: 45,427 personsLittleton, CO45,427Brighton, CO: 43,982 personsBrighton, CO43,982Windsor, CO: 41,877 personsWindsor, CO41,877Northglenn, CO: 38,726 personsNorthglenn, CO38,726Erie, CO: 38,674 personsErie, CO38,674Englewood, CO: 35,701 personsEnglewood, CO35,701Wheat Ridge, CO: 32,086 personsWheat Ridge, CO32,086Lafayette, CO: 30,527 personsLafayette, CO30,527Fountain, CO: 29,430 personsFountain, CO29,430Evans, CO: 22,504 personsEvans, CO22,504Montrose, CO: 21,608 personsMontrose, CO21,608Louisville, CO: 20,754 personsLouisville, CO20,754Johnstown, CO: 20,697 personsJohnstown, CO20,697Golden, CO: 20,201 personsGolden, CO20,201Durango, CO: 19,847 personsDurango, CO19,847Firestone, CO: 19,452 personsFirestone, CO19,452Frederick, CO: 18,011 personsFrederick, CO18,011Cañon City, CO: 17,124 personsCañon City, CO17,124Greenwood Village, CO: 15,483 personsGreenwood Village, CO15,483Castle Pines, CO: 15,105 personsCastle Pines, CO15,105Federal Heights, CO: 14,139 personsFederal Heights, CO14,139Lone Tree, CO: 14,027 personsLone Tree, CO14,027Fruita, CO: 13,930 personsFruita, CO13,930Steamboat Springs, CO: 13,747 personsSteamboat Springs, CO13,747Berthoud, CO: 13,629 personsBerthoud, CO13,629Superior, CO: 13,560 personsSuperior, CO13,560Monument, CO: 13,374 personsMonument, CO13,374Sterling, CO: 13,059 personsSterling, CO13,059Wellington, CO: 12,112 personsWellington, CO12,112Fort Morgan, CO: 11,826 personsFort Morgan, CO11,826Severance, CO: 11,609 personsSeverance, CO11,609Timnath, CO: 10,825 personsTimnath, CO10,825Rifle, CO: 10,756 personsRifle, CO10,756Glenwood Springs, CO: 10,423 personsGlenwood Springs, CO10,423Fort Lupton, CO: 9,973 personsFort Lupton, CO9,973
persons. Source: U.S. Census Bureau, Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved 2026-10-12.

Full ranking

RankCities2024
persons		Change on 2023
1Denver, CO741,591+2%
2Colorado Springs, CO492,455+0.5%
3Aurora, CO408,325+2.2%
4Fort Collins, CO170,727+0.1%
5Lakewood, CO157,395+0.6%
6Thornton, CO148,370+1.7%
7Arvada, CO122,310+0.4%
8Westminster, CO116,293+0.6%
9Greeley, CO114,771+1.7%
10Pueblo, CO111,348-0%
11Centennial, CO109,812+0.5%
12Boulder, CO106,557+0.1%
13Longmont, CO99,600+0.6%
14Castle Rock, CO83,004+1.8%
15Loveland, CO80,976+2%
16Broomfield, CO78,403+1.9%
17Commerce City, CO71,038+3.4%
18Grand Junction, CO70,588+1.6%
19Parker, CO65,216+4%
20Littleton, CO45,427+1%
21Brighton, CO43,982+2.8%
22Windsor, CO41,877+3.5%
23Northglenn, CO38,726+0.8%
24Erie, CO38,674+9.4%
25Englewood, CO35,701+2.9%
26Wheat Ridge, CO32,086+0.6%
27Lafayette, CO30,527+0.1%
28Fountain, CO29,430+3.1%
29Evans, CO22,504+0.4%
30Montrose, CO21,608+1.1%
31Louisville, CO20,754+1.2%
32Johnstown, CO20,697+6%
33Golden, CO20,201-0.4%
34Durango, CO19,847+1.7%
35Firestone, CO19,452+4.5%
36Frederick, CO18,011+1.7%
37Cañon City, CO17,124-0.4%
38Greenwood Village, CO15,483+0.7%
39Castle Pines, CO15,105+2.4%
40Federal Heights, CO14,139+0.6%
41Lone Tree, CO14,027-0%
42Fruita, CO13,930+0.7%
43Steamboat Springs, CO13,747+0.9%
44Berthoud, CO13,629+2.9%
45Superior, CO13,560+1.2%
46Monument, CO13,374+10.6%
47Sterling, CO13,059+0.7%
48Wellington, CO12,1120%
49Fort Morgan, CO11,826+0.9%
50Severance, CO11,609+6.8%
51Timnath, CO10,825+8.4%
52Rifle, CO10,756+1.1%
53Glenwood Springs, CO10,423+0.9%
54Fort Lupton, CO9,973+5.6%

Other periods

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the cities are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.

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Rank Cities in Colorado by population using official data, and cite the source.
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Questions

Which city has the highest population?

Denver, CO, with 741,591 in 2024, according to the U.S. Census Bureau.

Which city has the lowest population?

Fort Lupton, CO, with 9,973 in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved 2026-10-12.

Population: other rankings