Natrona County, Wyoming ZIP codes
14 ZIP codes are in Natrona County, plus 2 that cross in from neighboring counties. It's part of the Casper, WY metro area.
- ZIP codes
- 14
- Population in these ZIPs
- 79,937
- Avg. median income
- $73,000population-weighted
- Cities & towns
- 10
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Natrona County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 82601 | Casper | 26,721 | $67,642 | $290,000 |
| 82602 PO Box | Casper | — | — | — |
| 82604 | Casper | 27,487 | $79,118 | $320,900 |
| 82605 PO Box | Casper | — | — | — |
| 82609 | Casper | 18,714 | $71,010 | $351,400 |
| 82620 | Alcova | 164 | — | — |
| 82630 | Arminto | 0 | — | — |
| 82635 | Edgerton | 87 | $34,886 | — |
| 82636 | Evansville | 4,259 | $86,638 | $328,300 |
| 82638 | Hiland | 116 | — | — |
| 82643 | Midwest | 267 | $77,800 | $42,400 |
| 82644 | Mills | 2,098 | $53,750 | $175,900 |
| 82646 | Natrona | 0 | — | — |
| 82648 | Powder River | 24 | — | — |
ZIP codes partly in Natrona County
These ZIP codes are mostly in a neighboring county but cover part of Natrona County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 82639 | Kaycee | Johnson County | 782 | $72,112 | $412,600 |
| 82642 | Lysite | Fremont County | 33 | $80,000 | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Natrona County
Nearby counties
Frequently asked questions
How many ZIP codes are in Natrona County, Wyoming?
14 ZIP codes are mainly in Natrona County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Natrona County?
ZIP codes in Natrona County use the city names Alcova, Arminto, Casper, Edgerton, Evansville, Hiland, Midwest, Mills, Natrona and Powder River.
What metro area is Natrona County in?
Natrona County is part of the Casper, WY metropolitan statistical area.