Where is Hancock County?

10 Hancock Counties in 10 states · 349,914 people (2025)

There are 10 counties named Hancock County in the United States, in Georgia, Illinois, Indiana, Iowa, Kentucky, Maine, Mississippi, Ohio, Tennessee and West Virginia. The most populous is Hancock County, Indiana (county seat: Greenfield), with 90,969 people in 2025. 10 of them are named after John Hancock, American Patriot and statesman during the American Revolution (1737–1793).

Map of the United States showing where all 10 Hancock Counties are, labeled by state
Every Hancock 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 10 Hancock Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Hancock County, GeorgiaSparta8,6824711793John Hancock
Hancock County, IllinoisCarthage16,8037941825John Hancock
Hancock County, IndianaGreenfield90,9693061827John Hancock
Hancock County, IowaGarner10,5285711851John Hancock
Hancock County, KentuckyHawesville9,0501881829John Hancock
Hancock County, MaineEllsworth57,1711,5871790John Hancock
Hancock County, MississippiBay St. Louis46,8734741812John Hancock
Hancock County, OhioFindlay75,0345311820John Hancock
Hancock County, TennesseeSneedville7,0752221844John Hancock
Hancock County, West VirginiaNew Cumberland27,729831848John Hancock

Questions about Hancock Counties

How many Hancock Counties are there?

There are 10 Hancock Counties in the United States, in Georgia, Illinois, Indiana, Iowa, Kentucky, Maine, Mississippi, Ohio, Tennessee and West Virginia.

Which Hancock County is the largest?

By population, Hancock County, Indiana (90,969 people in 2025). By land area, Hancock County, Maine (1,587 sq mi).

Which Hancock County is the oldest?

Hancock County, Maine, established in 1790. The newest is Hancock County, Iowa (1851).

Why are there so many Hancock Counties?

10 of the 10 are named after John Hancock, American Patriot and statesman during the American Revolution (1737–1793). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Hancock 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