Where is Saline County?

5 Saline Counties in 5 states · 247,698 people (2025)

There are 5 counties named Saline County in the United States, in Arkansas, Illinois, Kansas, Missouri and Nebraska. The most populous is Saline County, Arkansas (county seat: Benton), with 133,288 people in 2025. 2 of them are named after Saline River, river in Illinois and Kentucky, United States.

Map of the United States showing where all 5 Saline Counties are, labeled by state
Every Saline 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 5 Saline Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Saline County, ArkansasBenton133,2887241835–
Saline County, IllinoisHarrisburg22,7723801847Saline River
Saline County, KansasSalina53,3777201860Saline River
Saline County, MissouriMarshall23,2657561820hot spring
Saline County, NebraskaWilber14,9965741867–

Questions about Saline Counties

How many Saline Counties are there?

There are 5 Saline Counties in the United States, in Arkansas, Illinois, Kansas, Missouri and Nebraska.

Which Saline County is the largest?

By population, Saline County, Arkansas (133,288 people in 2025). By land area, Saline County, Missouri (756 sq mi).

Which Saline County is the oldest?

Saline County, Missouri, established in 1820. The newest is Saline County, Nebraska (1867).

Why are there so many Saline Counties?

2 of the 5 are named after Saline River, river in Illinois and Kentucky, United States. Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Saline 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