Where is Phillips County?

4 Phillips Counties in 4 states · 27,606 people (2025)

There are 4 counties named Phillips County in the United States, in Arkansas, Colorado, Kansas and Montana. The most populous is Phillips County, Arkansas (county seat: Helena-West Helena), with 14,255 people in 2025.

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

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Phillips County, ArkansasHelena-West Helena14,2556901820Sylvanus Phillips
Phillips County, ColoradoHolyoke4,4206881889–
Phillips County, KansasPhillipsburg4,7288861867William A. Phillips
Phillips County, MontanaMalta4,2035,1401915Benjamin D. Phillips

Questions about Phillips Counties

How many Phillips Counties are there?

There are 4 Phillips Counties in the United States, in Arkansas, Colorado, Kansas and Montana.

Which Phillips County is the largest?

By population, Phillips County, Arkansas (14,255 people in 2025). By land area, Phillips County, Montana (5,140 sq mi).

Which Phillips County is the oldest?

Phillips County, Arkansas, established in 1820. The newest is Phillips County, Montana (1915).

How do I find out which Phillips 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