Natrona County, Wyoming ZIP Codes

12 ZIP Codes

Zip Code
City
Population ↓
82604Casper27,487
82601Casper26,721
82609Casper18,714
82636Evansville4,259
82644Mills2,098
82643Midwest267
82620Alcova164
82638Hiland116
82635Edgerton87
82648Powder River24
82630Arminto0
82646Natrona0

Overview of ZIP Codes in Natrona County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
12
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Natrona County, Wyoming (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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