Platte County, Wyoming Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 17th-largest in Wyoming
The population of Platte County, Wyoming is 8,606 as of the 2023 American Community Survey, making it the 17th-largest county in Wyoming. The median household income is $66,299, the median home value is $248,900, and the median age is 47.8.
The population of Platte County has declined 1.8% since 2010 (8,665 → 8,512), a -0.13% annualized rate.
8,606
Population
-0.13%
Annual growth
4
People / sq mi
$66,299
Median Income
$248,900
Median Home Value
Platte County covers 2,081 sq mi of land at 4.1 people per square mile.
About Platte County, WY
Platte County is a county in Wyoming with a population of 8,606. It ranks #17 among counties in Wyoming by population. The median age is 47.8, older than the national median. The population is 51.4% male and 48.6% female.
The median household income in Platte County is $66,299, below the US median of $74,580. 5.8% of residents live below the federal poverty level. Home values sit at a median of $248,900, with monthly rent averaging $745. The homeownership rate of 72.5% is higher than the national rate of 64.8%.
Educational attainment in Platte County reflects 19.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 7.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 18.6 minutes each way.
Platte County Population History (2010-2024)
The county of Platte County had a population of 8,665 in 2010 and 8,512 in 2024, a -1.8% growth over 14 years. The peak was 8,803 in 2015. Average annual growth rate: -0.12%.
8,512
Population (2024)
8,665
Population (2010)
8,803
Peak (2015)
-0.12%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 8,665 |
| 2011 | 8,695 |
| 2012 | 8,729 |
| 2013 | 8,712 |
| 2014 | 8,778 |
| 2015 | 8,803 |
| 2016 | 8,673 |
| 2017 | 8,557 |
| 2018 | 8,571 |
| 2019 | 8,475 |
| 2020 | 8,632 |
| 2021 | 8,679 |
| 2022 | 8,655 |
| 2023 | 8,581 |
| 2024 | 8,512 |
Race & Ethnicity
| White | 87.8% |
| Black or African American | 0.4% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.8% |
| Two or More Races | 0.3% |
Age & Sex
47.8
Median Age
48.6%
Female
51.4%
Male
26.2%
Age 65+
Age Distribution
Children (under 15): 14.8% · Seniors (65+): 26.2%
Income & Poverty
| Median household income | $66,299$-8,516 vs state |
| Mean household income | $82,117 |
| Per-capita income | $37,237 |
| Poverty rate | 5.8%-1.3% vs state |
| Unemployment rate | 2.5% |
| Employment-to-population | 51.8% |
Top Industries by Employment
The largest employment sector in Platte County is construction, accounting for 16.4% of workers.
How residents commute
0.2%
Drive alone
3.4%
Carpool
78.4%
Public transit
7.1%
Work from home
18.6 min
Avg commute
Housing
$248,900$-36,200 vs state
Median home value
$745
Median rent
72.5%
Homeownership rate
4,656
Total housing units
83.3%
Occupied
16.7%
Vacant
27.5%
Renter-occupied
Social & access
77.5%
With health insurance
91.0%
With broadband internet
59.0%
Foreign-born
8.0%
Veterans (18+)
16.6%
With a disability
92.8%
Speak language other than English at home
Education
91.6%
High School+
19.5%
Bachelor's+
Largest cities in Wyoming
Other counties in Wyoming
Part of Wyoming
Metro areas in Wyoming
County rankings
Frequently Asked Questions
Platte County, Wyoming has a population of 8,606 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 17th-largest county in Wyoming. Population density is 4 people per square mile.
The population of Platte County has declined 1.8% since 2010 (8,665 → 8,512), a -0.13% annualized rate.
The median household income in Platte County, Wyoming is $66,299, with mean (average) household income of $82,117 and per-capita income of $37,237. 5.8% of residents live below the federal poverty level.
In Platte County, the largest racial and ethnic groups are White (87.8%), Hispanic or Latino (2.8%), Black or African American (0.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Platte County, Wyoming is 47.8 years. Residents are 48.6% female and 51.4% male.
The median home value in Platte County is $248,900 and median monthly rent is $745. 72.5% of occupied housing units are owner-occupied. The county has 4,656 total housing units, 16.7% of which are vacant.
The largest employment sector in Platte County, Wyoming is construction, employing 16.4% of workers. The unemployment rate is 2.5%.
Cheyenne is among the largest cities associated with Platte County, Wyoming, with a population of 64,976.
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Statewide data for Wyoming
Population, race, income, age, and trends across Wyoming
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.