Dallam County, Texas Cities (2025)

2 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Change
Density
Area (mi²)
Type
Dalhart18,3038,428-0.3%1,7364.78 City
Texline24704540.64%4631.02 Town

Dallam County Cities Summary

Largest City

Dalhart is the largest city in Dallam County, with a population of 8,303.

Smallest City

Texline is the smallest city in Dallam County.

10 Largest Cities

There are 2 cities in Dallam County, Texas.