ZIP Codes of Platte County, WY

Population & People
Population & People
Total Population
8,725
Household Income
Household Income
Median Income
$83,956
Housing
Housing
Total Housing Units
4,892
Business & Economy
Business & Economy
Total Businesses
273
Employment
Employment
Employment Rate
50.03%
Education
Education
Bachelor's Degree+
21.37%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 5 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:5 ZIP Codes (5 Standard, 0 PO Box, 0 Unique) [See All]
Area Code:307
Timezone:Mountain (GMT -07:00)
Local Time:2:14:25 PM
Population:8,725 [See All]
FIPS:56031
Land Area:2,812 sq mi
Water Area:29 sq mi
Coordinates:42.1731, -104.8826
Quick Link:
https://www.zip-codes.com/county/wy-platte.asp
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Among America's 50 most Hispanic-majority counties
0.4% Hispanic or Latino — #29 nationwide.
Among Wyoming's 5 oldest counties
Median age 47.3.

Standout ZIPs in this County


Most Populous
Wheatland · 6,245 people
71.6% of county total
Highest Income
Hartville · $137,589 median
1.6× county average
Largest Land Area
Wheatland · 1,790.8 sq mi
Spans the most ground
Fastest Growth
Wheatland · -1.3% (10-yr)
6,329 → 6,245 residents
Most Educated
Wheatland · 22.0% bachelor's+
1,062 of 4,820 adults 25+

Things worth knowing about Platte County


8,725 residents live across 5 ZIPs covering 2,812 sq mi, served by 5 distinct USPS-recognized cities.

Population moved from 8,919 to 8,725 from 2014 to 2024 — a -2.2% change. 2 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 82215 (Hartville, $137,589 median) and poorest ZIP 82201 (Wheatland, $64,982) are 31.2 miles apart — a 2.1× income gap across local geography.

Median home values vary 1.6× across this county — from $228,400 in 82210 (Chugwater) to $354,200 in 82213 (Glendo).

Density varies 11× across the county — from 1 people/sq mi in 82210 (Chugwater) to 9 in 82214 (Guernsey).

Educational attainment ranges from 17.6% bachelor's+ in 82210 (Chugwater) to 24.2% in 82215 (Hartville) — the breadth of educational profiles across the area.

Within Wyoming, this is the #18 most populous of 28 counties and ranks #13 for median household income .

Weighted by population, the typical household earns about $71,066 across the county — reflecting what a typical resident sees, not a simple ZIP average.

21.4% of adults age 25+ hold a bachelor's degree or higher (1,430 of 6,692 reporting).

5 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Platte County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
2,812
square miles
Avg density
3.1
people per sq mi
Population
8,725
across 5 ZIPs
Wheatland
1,790.8 sq mi
6,245 residents
Glendo
484.4 sq mi
786 residents
Chugwater
341.9 sq mi
275 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Wheatland

All ZIP Codes in Platte County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
82201WheatlandStandard6,245$64,9821,790.8-1.3%
82214GuernseyStandard932$77,784101.2-34.0%
82213GlendoStandard786$71,225484.414.7%
82215HartvilleStandard487$137,58994.0197.0%
82210ChugwaterStandard275$68,200341.9-16.2%

Adjacent & Nearby Counties