Where is Carroll County?

13 Carroll Counties in 13 states · 559,895 people (2025)

There are 13 counties named Carroll County in the United States, in Arkansas, Georgia, Illinois, Indiana, Iowa, Kentucky, Maryland, Mississippi, Missouri, New Hampshire, Ohio, Tennessee and Virginia. The most populous is Carroll County, Maryland (county seat: Westminster), with 176,677 people in 2025. 12 of them are named after Charles Carroll of Carrollton, American planter and signatory of the Declaration of Independence (1737-1832).

Map of the United States showing where all 13 Carroll Counties are, labeled by state
Every Carroll 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 13 Carroll Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Carroll County, ArkansasBerryville, Eureka Springs29,2636301833Charles Carroll of Carrollton
Carroll County, GeorgiaCarrollton131,0364991825Charles Carroll of Carrollton
Carroll County, IllinoisMount Carroll15,4194451839Charles Carroll of Carrollton
Carroll County, IndianaDelphi20,6553721828Charles Carroll of Carrollton
Carroll County, IowaCarroll20,3035701851Charles Carroll of Carrollton
Carroll County, KentuckyCarrollton11,1411291838Charles Carroll of Carrollton
Carroll County, MarylandWestminster176,6774481837Charles Carroll of Carrollton
Carroll County, MississippiCarrollton, Vaiden9,2266281833Charles Carroll of Carrollton
Carroll County, MissouriCarrollton8,4176951833Charles Carroll of Carrollton
Carroll County, New HampshireOssipee52,7849321840Charles Carroll of Carrollton
Carroll County, OhioCarrollton26,4753951833Charles Carroll of Carrollton
Carroll County, TennesseeHuntingdon29,2005981821William Carroll
Carroll County, VirginiaHillsville29,2994751842Charles Carroll of Carrollton

Questions about Carroll Counties

How many Carroll Counties are there?

There are 13 Carroll Counties in the United States, in Arkansas, Georgia, Illinois, Indiana, Iowa, Kentucky, Maryland, Mississippi, Missouri, New Hampshire, Ohio, Tennessee and Virginia.

Which Carroll County is the largest?

By population, Carroll County, Maryland (176,677 people in 2025). By land area, Carroll County, New Hampshire (932 sq mi).

Which Carroll County is the oldest?

Carroll County, Tennessee, established in 1821. The newest is Carroll County, Iowa (1851).

Why are there so many Carroll Counties?

12 of the 13 are named after Charles Carroll of Carrollton, American planter and signatory of the Declaration of Independence (1737-1832). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Carroll 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