Where is Henry County?

10 Henry Counties in 10 states · 548,751 people (2025)

There are 10 counties named Henry County in the United States, in Alabama, Georgia, Illinois, Indiana, Iowa, Kentucky, Missouri, Ohio, Tennessee and Virginia. The most populous is Henry County, Georgia (county seat: McDonough), with 264,922 people in 2025. 9 of them are named after Patrick Henry, American Founding Father, orator and politician (1736 – 1799).

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

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Henry County, AlabamaAbbeville18,3945621819Patrick Henry
Henry County, GeorgiaMcDonough264,9223191821Patrick Henry
Henry County, IllinoisCambridge48,0958231825Patrick Henry
Henry County, IndianaNew Castle49,1373921821Patrick Henry
Henry County, IowaMount Pleasant19,3494341836Henry Dodge
Henry County, KentuckyNew Castle16,4472861798Patrick Henry
Henry County, MissouriClinton22,6716971834Patrick Henry
Henry County, OhioNapoleon27,5984161820Patrick Henry
Henry County, TennesseeParis32,8965621821Patrick Henry
Henry County, VirginiaMartinsville49,2423821777Patrick Henry

Questions about Henry Counties

How many Henry Counties are there?

There are 10 Henry Counties in the United States, in Alabama, Georgia, Illinois, Indiana, Iowa, Kentucky, Missouri, Ohio, Tennessee and Virginia.

Which Henry County is the largest?

By population, Henry County, Georgia (264,922 people in 2025). By land area, Henry County, Illinois (823 sq mi).

Which Henry County is the oldest?

Henry County, Virginia, established in 1777. The newest is Henry County, Iowa (1836).

Why are there so many Henry Counties?

9 of the 10 are named after Patrick Henry, American Founding Father, orator and politician (1736 – 1799). Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Henry 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.

What county am I in? →

Other common county names