Where is Smith County?

4 Smith Counties in 4 states · 291,087 people (2025)

There are 4 counties named Smith County in the United States, in Kansas, Mississippi, Tennessee and Texas. The most populous is Smith County, Texas (county seat: Tyler), with 252,549 people in 2025.

Map of the United States showing where all 4 Smith Counties are, labeled by state
Every Smith 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 4 Smith Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Smith County, KansasSmith Center3,5668961867J. Nelson Smith
Smith County, MississippiRaleigh13,9916361833–
Smith County, TennesseeCarthage20,9813141799Daniel Smith
Smith County, TexasTyler252,5499221846James Smith

Questions about Smith Counties

How many Smith Counties are there?

There are 4 Smith Counties in the United States, in Kansas, Mississippi, Tennessee and Texas.

Which Smith County is the largest?

By population, Smith County, Texas (252,549 people in 2025). By land area, Smith County, Texas (922 sq mi).

Which Smith County is the oldest?

Smith County, Tennessee, established in 1799. The newest is Smith County, Kansas (1867).

How do I find out which Smith 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