Roscommon County, Michigan

County seat: Roscommon · Population 23,914 (2025) · 520 sq mi

Roscommon County is the 60th most populous of Michigan's 83 counties, with 23,914 people (2025 estimate). Its county seat is Roscommon. It is part of the Northeast (Region 3) region, one of the 10 Michigan prosperity regions. The map shows its 1 city or town and the 7 neighboring counties.

Map of Roscommon County, Michigan with cities, towns and the county boundary
Roscommon County, Michigan 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).

Roscommon County facts

County seat
Roscommon
Population (2025 estimate)
23,914 +2% since 2020
Land area
520 sq mi 66th largest of 83
Water area
60 sq mi
Population density
46 per sq mi
Established
1840
Named after
County Roscommon county in Ireland
Largest city
Houghton Lake 5,769
Median household income
$55,246
Cities and towns
1 plus 3 CDPs
ZIP codes
7
Time zone
Eastern
FIPS code
26143

Cities and towns in Roscommon County

Roscommon County has 1 incorporated place. Populations count the people living inside Roscommon County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Roscommon (county seat)Village992

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Houghton Lake5,769
St. Helen2,929
Prudenville1,350

ZIP codes in Roscommon County

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

Population of Roscommon County, 2020–2025

Roscommon County grew by 457 people (+2%) between April 2020 and July 2025: 1,498 more deaths than births and a net gain of 1,971 people from migration.

Year (July 1)Population
202023,476
202123,674
202223,730
202323,940
202423,951
202523,914

Neighboring counties

Printable Roscommon County map

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Sources

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