Custer County, Colorado

County seat: Westcliffe · Population 5,590 (2025) · 739 sq mi

Custer County is the 51st most populous of Colorado's 64 counties, with 5,590 people (2025 estimate). Its county seat is Westcliffe. It is part of the Region 13: Central Mountains region, one of the 14 Planning and Management Regions of Colorado. The map shows its 2 cities and towns and the 4 neighboring counties.

Map of Custer County, Colorado with cities, towns and the county boundary
Custer County, Colorado with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

Custer County facts

County seat
Westcliffe
Population (2025 estimate)
5,590 +18.8% since 2020
Land area
739 sq mi 51st largest of 64
Water area
1 sq mi
Population density
8 per sq mi
Established
1877
Same name
One of 6 Custer Counties in the US
Named after
George Armstrong Custer United States cavalry commander (1839–1876)
Largest city
Silver Cliff 713
Median household income
$72,674
Cities and towns
2
ZIP codes
4
Time zone
Mountain
FIPS code
08027

Cities and towns in Custer County

Custer County has 2 incorporated cities, towns and villages. Populations count the people living inside Custer County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Silver CliffTown713
Westcliffe (county seat)Town488

ZIP codes in Custer County

4 ZIP codes reach into Custer County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Custer County, 2020–2025

Custer County grew by 883 people (+18.8%) between April 2020 and July 2025: 36 more deaths than births and a net gain of 922 people from migration.

Year (July 1)Population
20204,724
20215,069
20225,349
20235,559
20245,567
20255,590

Neighboring counties

Printable Custer County map

The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.

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Sources

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