Where is Thomas County?

3 Thomas Counties in 3 states · 54,732 people (2025)

There are 3 counties named Thomas County in the United States, in Georgia, Kansas and Nebraska. The most populous is Thomas County, Georgia (county seat: Thomasville), with 46,368 people in 2025. 2 of them are named after George Henry Thomas, United States Army general (1816-1870).

Map of the United States showing where all 3 Thomas Counties are, labeled by state
Every Thomas 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 3 Thomas Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Thomas County, GeorgiaThomasville46,3685451825Jett Thomas
Thomas County, KansasColby7,7251,0751873George Henry Thomas
Thomas County, NebraskaThedford6397131887George Henry Thomas

Questions about Thomas Counties

How many Thomas Counties are there?

There are 3 Thomas Counties in the United States, in Georgia, Kansas and Nebraska.

Which Thomas County is the largest?

By population, Thomas County, Georgia (46,368 people in 2025). By land area, Thomas County, Kansas (1,075 sq mi).

Which Thomas County is the oldest?

Thomas County, Georgia, established in 1825. The newest is Thomas County, Nebraska (1887).

Why are there so many Thomas Counties?

2 of the 3 are named after George Henry Thomas, United States Army general (1816-1870). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Thomas 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