Weston County, Wyoming

Weston County: County in Wyoming, United States


Weston County is a county located in the U.S. state of Wyoming. As of the 2010 census, the population was 7,208 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 6,743 inhabitants. Its county seat is Newcastle. The county was created 133 years ago in 1889.

Weston County locator map
Location of Weston County on Wyoming map.

Quick Facts about Weston County

Population : 6,743 (2020)
Country : United States of America
State : Wyoming (United States)
Area : 6216 km2
Water as percent of area : 0.08%
Land as percent of area : 99.92%
Altitude : 4,226 feet / 1288 meters
Capital : Newcastle
Establishment : January 01, 1890
Time Zone : America/Denver
Local time : 10:45:07 (7th December 2023)
Density : 1 Pop. per km² as of 2020
Population growth : -6.9% (2010-2020)
Weather : 33℉ Partly Cloudy 7-days weather
Weston County Courthouse Wyoming image
Weston County Courthouse Wyoming
Weston County Courthouse Wyoming image


Weston County is located at 43°50'26"N 104°34'4"W (43.8404900, -104.5678300). It has 7 neighbors: Campbell County, Custer County, Lawrence County, Pennington County, Converse County, Crook County and Niobrara County.

Weston County map

The largest city of Weston County is Newcastle with a population of 3,314. . See all Weston County cities & populated places.

Weston County Populated Places

Cities, towns, neighborhoods & other populated places in Weston County.

City Name Population Title
Newcastle 3,314 City in Weston County, Wyoming, United States
Upton 1,032 Town in Weston County, Wyoming, United States


Weston County forecast: Partly cloudy, with a low around 33. more

Weston County has 7 neighbours.

  • Newcastle


According to census records, the population of Weston County decreased by 6.9% in 10 years.

Year Population % Change Method
2010 7,208 - census
2011 7,142 -0.92% estimation process
2012 7,077 -0.92% estimation process
2013 7,136 0.83% estimation process
2014 7,138 0.03% estimation process
2015 7,208 0.97% estimation process
2016 7,220 0.17% estimation process
2017 6,968 -3.62% estimation process
2018 6,924 -0.64% estimation process
2019 6,927 0.04% estimation process
2020 6,743 -2.73% estimation process

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Wyoming Other Counties (more counties)

County Name Population Title
Laramie County 100,595 County in the southeastern corner of Wyoming, United States
Natrona County 80,815 County in Wyoming, United States
Cheyenne 64,742 The most populous city in Laramie County, Wyoming.
Casper 58,498 The most populous city in Natrona County, Wyoming.
Campbell County 46,676 County in northeastern Wyoming, United States
Sweetwater County 42,673 County in Wyoming, United States
Fremont County 39,317 County in western Wyoming, United States
Albany County 38,950 County in Wyoming, United States
Laramie 32,661 City in and county seat of Albany County, Wyoming, United States
Gillette 32,220 City in Campbell County, Wyoming, United States
Sheridan County 30,863 County in Wyoming, United States
Park County 29,331 County in Colorado, United States
Teton County 23,497 County in Wyoming, United States
Rock Springs 22,943 City in Sweetwater County, Wyoming, United States
Lincoln County 20,253 County in Wyoming, United States
Uinta County 20,215 County in Wyoming, United States