Where is Butler County?

8 Butler Counties in 8 states · 764,861 people (2025)

There are 8 counties named Butler County in the United States, in Alabama, Iowa, Kansas, Kentucky, Missouri, Nebraska, Ohio and Pennsylvania. The most populous is Butler County, Ohio (county seat: Hamilton), with 400,128 people in 2025. 3 of them are named after William Orlando Butler, United States general (1791-1880).

Map of the United States showing where all 8 Butler Counties are, labeled by state
Every Butler 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 8 Butler Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Butler County, AlabamaGreenville18,1007771819William Butler
Butler County, IowaAllison14,0495801851William Orlando Butler
Butler County, KansasEl Dorado69,4841,4301855Andrew Butler
Butler County, KentuckyMorgantown12,5204261810Richard Butler
Butler County, MissouriPoplar Bluff41,9046951849William Orlando Butler
Butler County, NebraskaDavid City8,5075851856William Orlando Butler
Butler County, OhioHamilton400,1284671803Richard Butler
Butler County, PennsylvaniaButler200,1697901800Richard Butler

Questions about Butler Counties

How many Butler Counties are there?

There are 8 Butler Counties in the United States, in Alabama, Iowa, Kansas, Kentucky, Missouri, Nebraska, Ohio and Pennsylvania.

Which Butler County is the largest?

By population, Butler County, Ohio (400,128 people in 2025). By land area, Butler County, Kansas (1,430 sq mi).

Which Butler County is the oldest?

Butler County, Pennsylvania, established in 1800. The newest is Butler County, Nebraska (1856).

Why are there so many Butler Counties?

3 of the 8 are named after William Orlando Butler, United States general (1791-1880). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Butler 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