Cities in Larimer County, Colorado by Population (2024)

There are 25 cities in Larimer 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.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Fort Collins1Colorado168,519169,979-0.22%2,94457.23
Greeley2Colorado109,154109,264-0.03%2,20849.43
Boulder3Colorado102,858108,112-1.26%3,82526.89
Longmont4Colorado98,19399,181-0.25%3,38229.04
Loveland5Colorado79,40676,3620.97%2,24235.42
Windsor6Colorado43,78633,2346.41%1,68026.06
Erie7Colorado35,80330,4053.92%1,72620.74
Firestone8Colorado19,96316,6654.31%1,43613.90
Johnstown9Colorado19,90717,3653.3%1,29015.44
Frederick10Colorado19,59214,7246.62%1,28815.21
Berthoud11Colorado14,81510,6057.65%1,14013
Severance12Colorado13,1827,98010.95%1,4479.11
Wellington13Colorado12,80511,1513.34%3,3363.84
Timnath14Colorado11,9496,73912.24%1,6357.31
Gunbarrel15Colorado9,92610,494-0.91%1,5896.25
Milliken16Colorado9,6988,4603.3%74313.06
Mead17Colorado7,6884,80010.37%51115.04
Estes Park18Colorado5,8215,903-0.34%8696.70
Niwot19Colorado4,0974,0850.07%1,0254
Platteville20Colorado2,9222,958-0.31%9363.12
Laporte21Colorado2,2972,2991.41%3766.12
Lyons22Colorado2,0832,209-1.47%1,5431.35
Allenspark23Colorado7184647.16%6011.94
Red Feather Lakes24Colorado265591-23.41%299.12
Woods Landing-Jelm25Wyoming23013411.65%1416.70
showing: 25 rows

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.

What is the largest city in Larimer County, Colorado?

Fort Collins is the largest city in Larimer County.

What is the smallest city in Larimer County, Colorado?

Woods Landing-Jelm is the smallest city in Larimer County.

How many cities are in Larimer County?

There are 25 cities in Larimer County, Colorado.

Frequently Asked Questions