Where is Jasper County?

8 Jasper Counties in 8 states · 313,532 people (2025)

There are 8 counties named Jasper County in the United States, in Georgia, Illinois, Indiana, Iowa, Mississippi, Missouri, South Carolina and Texas. The most populous is Jasper County, Missouri (county seat: Carthage), with 127,428 people in 2025. 8 of them are named after William Jasper, American soldier in the Revolutionary War.

Map of the United States showing where all 8 Jasper Counties are, labeled by state
Every Jasper 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 8 Jasper Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Jasper County, GeorgiaMonticello17,6323681807William Jasper
Jasper County, IllinoisNewton9,0324951831William Jasper
Jasper County, IndianaRensselaer33,8945601835William Jasper
Jasper County, IowaNewton38,1537301846William Jasper
Jasper County, MississippiBay Springs, Paulding15,7856761833William Jasper
Jasper County, MissouriCarthage127,4286391841William Jasper
Jasper County, South CarolinaRidgeland38,5336551912William Jasper
Jasper County, TexasJasper33,0759391836William Jasper

Questions about Jasper Counties

How many Jasper Counties are there?

There are 8 Jasper Counties in the United States, in Georgia, Illinois, Indiana, Iowa, Mississippi, Missouri, South Carolina and Texas.

Which Jasper County is the largest?

By population, Jasper County, Missouri (127,428 people in 2025). By land area, Jasper County, Texas (939 sq mi).

Which Jasper County is the oldest?

Jasper County, Georgia, established in 1807. The newest is Jasper County, South Carolina (1912).

Why are there so many Jasper Counties?

8 of the 8 are named after William Jasper, American soldier in the Revolutionary War. Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Jasper 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