Where is Carbon County?

4 Carbon Counties in 4 states · 112,027 people (2025)

There are 4 counties named Carbon County in the United States, in Montana, Pennsylvania, Utah and Wyoming. The most populous is Carbon County, Pennsylvania (county seat: Jim Thorpe), with 65,868 people in 2025. 3 of them are named after carbon, chemical element with symbol C and atomic number 6; common element of all known life.

Map of the United States showing where all 4 Carbon Counties are, labeled by state
Every Carbon 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 4 Carbon Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Carbon County, MontanaRed Lodge11,4662,0481895carbon
Carbon County, PennsylvaniaJim Thorpe65,8683811843coal
Carbon County, UtahPrice20,6801,4791894carbon
Carbon County, WyomingRawlins14,0137,8981868carbon, coal

Questions about Carbon Counties

How many Carbon Counties are there?

There are 4 Carbon Counties in the United States, in Montana, Pennsylvania, Utah and Wyoming.

Which Carbon County is the largest?

By population, Carbon County, Pennsylvania (65,868 people in 2025). By land area, Carbon County, Wyoming (7,898 sq mi).

Which Carbon County is the oldest?

Carbon County, Pennsylvania, established in 1843. The newest is Carbon County, Montana (1895).

Why are there so many Carbon Counties?

3 of the 4 are named after carbon, chemical element with symbol C and atomic number 6; common element of all known life. Many counties took their names from the same founders, presidents and generals as new states were organized.

How do I find out which Carbon 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