Where is Ellis County?

3 Ellis Counties in 3 states · 273,555 people (2025)

There are 3 counties named Ellis County in the United States, in Kansas, Oklahoma and Texas. The most populous is Ellis County, Texas (county seat: Waxahachie), with 240,867 people in 2025.

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

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Ellis County, KansasHays29,0759001867–
Ellis County, OklahomaArnett3,6131,2321907Albert H. Ellis
Ellis County, TexasWaxahachie240,8679361849Richard Ellis

Questions about Ellis Counties

How many Ellis Counties are there?

There are 3 Ellis Counties in the United States, in Kansas, Oklahoma and Texas.

Which Ellis County is the largest?

By population, Ellis County, Texas (240,867 people in 2025). By land area, Ellis County, Oklahoma (1,232 sq mi).

Which Ellis County is the oldest?

Ellis County, Texas, established in 1849. The newest is Ellis County, Oklahoma (1907).

How do I find out which Ellis 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