Where is Calhoun County?

11 Calhoun Counties in 11 states · 338,846 people (2025)

There are 11 counties named Calhoun County in the United States, in Alabama, Arkansas, Florida, Georgia, Illinois, Iowa, Michigan, Mississippi, South Carolina, Texas and West Virginia. The most populous is Calhoun County, Michigan (county seat: Marshall), with 133,408 people in 2025. 11 of them are named after John C. Calhoun, vice president of the United States from 1825 to 1832 (1782–1850).

Map of the United States showing where all 11 Calhoun Counties are, labeled by state
Every Calhoun County in the United States (red), labeled with its state. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).

All 11 Calhoun Counties

Sorted by state. Each link opens the county's map.

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Calhoun County, AlabamaAnniston115,8346061832John C. Calhoun
Calhoun County, ArkansasHampton4,6326291850John C. Calhoun
Calhoun County, FloridaBlountstown13,2895671838John C. Calhoun
Calhoun County, GeorgiaMorgan5,4132801854John C. Calhoun
Calhoun County, IllinoisHardin4,3002541825John C. Calhoun
Calhoun County, IowaRockwell City9,5625701851John C. Calhoun
Calhoun County, MichiganMarshall133,4087061829John C. Calhoun
Calhoun County, MississippiPittsboro12,6435871852John C. Calhoun
Calhoun County, South CarolinaSt. Matthews14,1883811908John C. Calhoun
Calhoun County, TexasPort Lavaca19,5995071846John C. Calhoun
Calhoun County, West VirginiaGrantsville5,9782791856John C. Calhoun

Questions about Calhoun Counties

How many Calhoun Counties are there?

There are 11 Calhoun Counties in the United States, in Alabama, Arkansas, Florida, Georgia, Illinois, Iowa, Michigan, Mississippi, South Carolina, Texas and West Virginia.

Which Calhoun County is the largest?

By population, Calhoun County, Michigan (133,408 people in 2025). By land area, Calhoun County, Michigan (706 sq mi).

Which Calhoun County is the oldest?

Calhoun County, Illinois, established in 1825. The newest is Calhoun County, South Carolina (1908).

Why are there so many Calhoun Counties?

11 of the 11 are named after John C. Calhoun, vice president of the United States from 1825 to 1832 (1782–1850). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Calhoun County an address is in?

Open the county map of the state: it has a search box for cities, towns and ZIP codes. On a phone, the "what county am I in" tool on our sister site uses your location.

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Other common county names