Natrona County, Wyoming

Natrona County: County in Wyoming, United States


Natrona County is a county located in the U.S. state of Wyoming. As of the 2010 census, the population was 75,450 and a population density of 5 people per km². After 10 years in 2020 county had an estimated population of 80,815 inhabitants. Its county seat is Casper. The county was created 135 years ago in 1887.

Quick Facts about Natrona County

Population : 80,815 (2020)
Country : United States of America
State : Wyoming (United States)
Area : 13923 km2
Water as percent of area : 0.7%
Land as percent of area : 99.3%
Named for : natron
Altitude : 5,686 feet / 1733 meters
Capital : Casper
Establishment : January 01, 1888
Time Zone : America/Denver
Local time : 22:25:47 (8th June 2023)
Density : 6 Pop. per km² as of 2020
Population growth : 6.64% (2010-2020)
Natrona County locator map
Location of Natrona County on Wyoming map.
Natrona County Courthouse image
Natrona County Courthouse
Natrona County Courthouse image


Natrona County is located at 42°57'44"N 106°47'55"W (42.9622400, -106.7984900). It has 5 neighbors: Johnson County, Carbon County, Converse County, Fremont County and Washakie County.

Natrona County map

The largest city of Natrona County is Casper with a population of 58,498. . See all Natrona County cities & populated places.

Natrona County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Natrona County.

City Name Population Title
Casper 58,498 City in and county seat of Natrona County, Wyoming, United States
Mills 4,077 Town in Wyoming, United States
Evansville 3,004 Town in Wyoming
Bar Nunn 2,870 Town of the United States
Mountain View 1,225 Town in Uinta County, Wyoming, United States
Midwest 395 Town of the United States
Edgerton 206 Town in Natrona County, Wyoming, United States

Natrona County has 5 neighbours.


The population of Natrona County increased by 6.64% in 10 years.

Year Population % Change Method
2010 75,450 - census
2011 76,399 1.24% estimation process
2012 78,565 2.76% estimation process
2013 81,103 3.13% estimation process
2014 81,377 0.34% estimation process
2015 82,137 0.93% estimation process
2016 80,909 -1.52% estimation process
2017 79,586 -1.66% estimation process
2018 79,175 -0.52% estimation process
2019 79,858 0.86% estimation process
2020 80,815 1.18% estimation process

Comitatul Natrona, Comte de Natrona, Comté de Natrona, Condado de Natrona, Condado han Natrona, Contea di Natrona, Hrabstwo Natrona, Natrona, Natrona Comitatus, Natrona Kun, Natrona Kūn, Natrona konderria, Natrona maakond, Natrona megye, Natronan piirikunta, Okrug Natrona, Quan Natrona, Quận Natrona, mqatʿt natrwna, na te luo na xian, natorona jun, natrona ka'unti, shhrstan natrwna waywmyng, Натрона, Округ Натрона, شهرستان ناترونا، وایومینگ, مقاطعة ناترونا, نیٹرونا کاؤنٹی، وائیومنگ, নাট্রোনা কাউন্টি, ナトロナ郡, 納特羅納縣

People born in Natrona County (1)

American engineer, novelist, and politician (1912-1987) Albert Harding was born in Natrona County

Wyoming Other Counties (more counties)

County Name Population Title
Laramie County 100,595 County in the southeastern corner of Wyoming, United States
Cheyenne 64,742 Capital of Wyoming, United States and seat of Laramie County
Casper 58,498 City in and county seat of Natrona County, Wyoming, United States
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
Sheridan 18,095 City in Wyoming, United States