Weston County, Wyoming Cities (2026)

2 cities

City
Rank
2026 Pop.
2020 Pop.
Annual Change
Density
Area (mi²)
Type
Newcastle13,3523,357-0.03%1,3093 City
Upton29038930.22%3493 Town

Weston County Cities Summary

Largest City

Newcastle is the largest city in Weston County, with a population of 3,352.

Smallest City

Upton is the smallest city in Weston County, with a population of 903.

10 Largest Cities

There are 2 cities in Weston County, Wyoming.

Location of Weston County