Where is Brown County?

9 Brown Counties in 9 states · 456,097 people (2025)

There are 9 counties named Brown County in the United States, in Illinois, Indiana, Kansas, Minnesota, Nebraska, Ohio, South Dakota, Texas and Wisconsin. The most populous is Brown County, Wisconsin (county seat: Green Bay), with 275,803 people in 2025. 4 of them are named after Jacob Brown, American general in the War of 1812.

Map of the United States showing where all 9 Brown Counties are, labeled by state
Every Brown 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 9 Brown Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Brown County, IllinoisMount Sterling6,4013061839Jacob Brown
Brown County, IndianaNashville15,7773121836Jacob Brown
Brown County, KansasHiawatha9,1045711855Albert G. Brown
Brown County, MinnesotaNew Ulm25,5176111855Joseph Renshaw Brown
Brown County, NebraskaAinsworth2,8261,2211883–
Brown County, OhioGeorgetown44,3974901818Jacob Brown
Brown County, South DakotaAberdeen37,5611,7131879Alfred Brown
Brown County, TexasBrownwood38,7119451856Henry Stevenson Brown
Brown County, WisconsinGreen Bay275,8035301818Jacob Brown

Questions about Brown Counties

How many Brown Counties are there?

There are 9 Brown Counties in the United States, in Illinois, Indiana, Kansas, Minnesota, Nebraska, Ohio, South Dakota, Texas and Wisconsin.

Which Brown County is the largest?

By population, Brown County, Wisconsin (275,803 people in 2025). By land area, Brown County, South Dakota (1,713 sq mi).

Which Brown County is the oldest?

Brown County, Ohio, established in 1818. The newest is Brown County, Nebraska (1883).

Why are there so many Brown Counties?

4 of the 9 are named after Jacob Brown, American general in the War of 1812. Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Brown 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