List of Largest Cities in Colorado

Colorado is the most populous state in the United States, with 5.2 million residents and an area of 104,094 square miles. Denver, the state’s largest city and capital, has an area of 196.32 square kilometers and a population of 649,495 at a density of 1,514 inhabitants per square kilometer, according to 2013 data. Spring is Colorado’s second-biggest city, with a population of 439,886 and the greatest area, at 504 square kilometers. Northglenn has the greatest population density at 1,878 people per square kilometer, with a total population of 37,499 and a city size of 19 square kilometers.

RankNamePopulationArea (km²)Density
1Denver649,495396.321,514City and County of Denver[
2Colorado Springs439,886504.71826El Paso County
3Aurora345,803398.49814Arapahoe County, Adams County, Douglas County
4Fort Collins152,061141.461,018Larimer County
5Lakewood147,214111.041,287Jefferson County
6Thornton127,35990.791,308Adams County, Weld County
7Arvada111,70799.281,072Adams County, Jefferson County
8Westminster110,94582.041,293Adams County, Jefferson County
9Pueblo108,249138.8767Pueblo County[
10Centennial106,11474.861,341Arapahoe County
11Boulder103,16664.361,514Boulder County[
12Highlands Ranch102,00062.831539Douglas County
13Greeley96,539122.04761Weld County[
14Longmont89,91970.591,222Boulder County, Weld County
15Loveland71,33487.67762Larimer County
16Grand Junction59,778100.85585Mesa County[
17Broomfield59,47185.42653City and County of Broomfield
18Castle Rock53,06387.71550Douglas County[
19Commerce City49,79990.42507Adams County
20Parker48,60854.85825Douglas County
21Littleton44,27532.981,265Arapahoe County, Jefferson County, Douglas County
22Northglenn37,49919.041,878Adams County, Weld County
23Brighton35,71953.05636Adams County, Weld County
24Englewood31,51616.971,782Arapahoe County
25Wheat Ridge30,92024.261,244Jefferson County

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