Natrona County, Wyoming

Natrona County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF NATRONA GUS Population: 80,410 (2024) ID: 177837	County	Official County Government	Contact: CHAIRMAN PO BOX 863, CASPER WY 82602-0863
CITY OF CASPER GUS Population: 58,823 (2024) ID: 136964	Municipal	Municipal Government Within County	Contact: SUPPORT SERVICES 200 N DAVID ST, ROOM 104, CASPER WY 82601-1894
TOWN OF MILLS GUS Population: 4,584 (2024) ID: 177867	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 789, MILLS WY 82644-0789
TOWN OF BAR NUNN GUS Population: 3,019 (2024) ID: 115498	Municipal	Municipal Government Within County	Contact: MAYOR 4820 N WARDWELL INDUSTRIAL AVE, BAR NUNN WY 82601-9304
TOWN OF EVANSVILLE GUS Population: 2,837 (2024) ID: 115497	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 158, EVANSVILLE WY 82636-0158
TOWN OF MIDWEST GUS Population: 291 (2024) ID: 212155	Municipal	Municipal Government Within County	Contact: ADMINISTRATOR 531 PEAKE ST, MIDWEST WY 82643
TOWN OF EDGERTON GUS Population: 155 (2024) ID: 115496	Municipal	Municipal Government Within County	Contact: CLERK TREASURER PO BOX 407, EDGERTON WY 82635-0407