Where is McPherson County?

3 McPherson Counties in 3 states · 32,780 people (2025)

There are 3 counties named McPherson County in the United States, in Kansas, Nebraska and South Dakota. The most populous is McPherson County, Kansas (county seat: McPherson), with 30,064 people in 2025. 3 of them are named after James B. McPherson, career officer of the United States Army (1828–1864).

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

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
McPherson County, KansasMcPherson30,0648981867James B. McPherson
McPherson County, NebraskaTryon3698591887James B. McPherson
McPherson County, South DakotaLeola2,3471,1371873James B. McPherson

Questions about McPherson Counties

How many McPherson Counties are there?

There are 3 McPherson Counties in the United States, in Kansas, Nebraska and South Dakota.

Which McPherson County is the largest?

By population, McPherson County, Kansas (30,064 people in 2025). By land area, McPherson County, South Dakota (1,137 sq mi).

Which McPherson County is the oldest?

McPherson County, Kansas, established in 1867. The newest is McPherson County, Nebraska (1887).

Why are there so many McPherson Counties?

3 of the 3 are named after James B. McPherson, career officer of the United States Army (1828–1864). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which McPherson 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