Weston County, Wyoming Cities (2025)

2 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Change
Density
Area (mi²)
Type
Newcastle13,3053,357-0.3%1,2912.56 City
Upton2886891-0.11%3432.59 Town

Weston County Cities Summary

Largest City

Newcastle is the largest city in Weston County, with a population of 3,305.

Smallest City

Upton is the smallest city in Weston County.

10 Largest Cities

There are 2 cities in Weston County, Wyoming.