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 distinguished by its share of foreign-born residents, 59.0% of the population. With 8,606 residents, Platte County is a county in Wyoming. It ranks #17 among counties in Wyoming by population.
The typical household here earns about $66,299, below the US median of $78,538. Poverty is relatively low for US counties at 5.8%, below the national 12.4%. Home values run above average at $248,900, with typical rent around $745.
Roughly 19.5% of adults have a bachelor’s, below the national 35.0%. Around 7.1% of workers work from home, below the national 14.0%, and the average commute runs about 19 minutes each way.
The large foreign-born share is a defining thread in Platte County, shaping language, household composition, and the labor force behind the economic figures above.
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.
More from Wyoming
Population 100,661
Population 79,735
Population 47,018
Population 41,786
Full rankings of Wyoming counties
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.