County ZIP codes · Wyoming · FIPS 56031
Platte County, WY ZIP Codes
Platte County, Wyoming has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones extend into a neighboring county.
- ACS2020-24
- Census2020
Where are the ZIP codes of Platte County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All 5 residential ZIP codes in Platte County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 82201 | Wheatland | 6,245 | 4 | $65k | $290k | 72% |
| 82214 | Guernsey | 932 | 12 | $78k | $303k | 100% |
| 82213 | Glendo | 786 | 2 | $71k | $354k | 100% |
| 82215 | Hartville | 487 | 8 | $138k | $331k | 100% |
| 82210 | Chugwater | 275 | 1 | $68k | $228k | 74% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
2 ZIP codes of Platte County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Platte | Elsewhere |
|---|---|---|
| 82201 | 72% | Albany County 28% |
| 82210 | 74% | Goshen County 26% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Platte County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Platte County starts with 822.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 822 | Cheyenne, WY (SCF 820) | 5 | 20 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.