Natrona County, Wyoming Zip Codes

Zip Code	City	Population
82604	Casper	27,492
82601	Casper	26,973
82609	Casper	18,567
82636	Evansville	3,903
82644	Mills	1,739
82620	Alcova	226
82643	Midwest	205
82635	Edgerton	116
82638	Hiland	115
82648	Powder River	114
82646	Natrona	26
82630	Arminto	0

Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.