Where is Delta County?

3 Delta Counties in 3 states · 74,309 people (2025)

There are 3 counties named Delta County in the United States, in Colorado, Michigan and Texas. The most populous is Delta County, Michigan (county seat: Escanaba), with 36,582 people in 2025.

Map of the United States showing where all 3 Delta Counties are, labeled by state
Every Delta 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 3 Delta Counties

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

StateCounty seatPopulation 2025Land area (sq mi)EstablishedNamed after
Delta County, ColoradoDelta32,1781,1421883Delta
Delta County, MichiganEscanaba36,5821,1711843delta
Delta County, TexasCooper5,5492571870–

Questions about Delta Counties

How many Delta Counties are there?

There are 3 Delta Counties in the United States, in Colorado, Michigan and Texas.

Which Delta County is the largest?

By population, Delta County, Michigan (36,582 people in 2025). By land area, Delta County, Michigan (1,171 sq mi).

Which Delta County is the oldest?

Delta County, Michigan, established in 1843. The newest is Delta County, Colorado (1883).

How do I find out which Delta 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