Weston County, Wyoming Cities (2025)

2 cities

City
Rank
2025 Pop.
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Newcastle13,3533,357-0.03%1,3093 City
Upton29018930.11%3483 Town

Weston County Cities Summary

Largest City

Newcastle is the largest city in Weston County, with a population of 3,353.

Smallest City

Upton is the smallest city in Weston County, with a population of 901.

10 Largest Cities

There are 2 cities in Weston County, Wyoming.

Location of Weston County