Platte County, Missouri Demographics 2026
Platte County, Missouri has a population of 110,371, the 11th most populous county in Missouri. The median household income is $96,227 and the median home value is $345,100. The poverty rate is 7.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Platte County Quick Facts
How Platte County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 108,751 | 110,371 | +1.5% |
| Median household income | $95,748 | $96,227 | +0.5% |
| Median home value | $317,600 | $345,100 | +8.7% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 40 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Platte County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Parkville | 8,366 | $171,271 | 2.0% | $573,500 |
| Platte City | 4,824 | $71,498 | 10.3% | $210,800 |
| Riverside | 4,276 | $52,006 | 17.3% | $411,300 |
| Weatherby Lake | 2,401 | $152,500 | 3.4% | $533,000 |
| Weston | 1,922 | $88,750 | 5.7% | $259,000 |
| Lake Waukomis | 1,170 | $128,702 | 1.0% | $432,300 |
| Ferrelview | 752 | $45,938 | 18.8% | $43,000 |
| Dearborn | 557 | $49,750 | 12.0% | $185,600 |
| Platte Woods | 532 | $131,458 | 0.8% | $334,400 |
| Edgerton | 518 | $78,393 | 13.1% | $212,100 |
| Camden Point | 401 | $76,250 | 4.5% | $246,300 |
| Northmoor | 371 | $82,500 | 15.1% | $183,900 |
| Farley | 309 | $124,375 | 4.3% | $233,900 |
| Tracy | 309 | $75,938 | 4.2% | $270,700 |
| Houston Lake | 271 | $106,875 | 7.0% | $244,000 |
| Ridgely | 84 | $71,875 | 4.8% | $250,000 |
| New Market | 52 | N/A | 0.0% | $165,400 |
| Iatan | 38 | $86,250 | 5.3% | $141,700 |
Explore Missouri Rankings
Population Overview
Platte County is located in Missouri with a total population of 110,371. It is the 11th most populous county out of 115 in Missouri. The county encompasses 18 Census-designated places.
Age Demographics
The median age in Platte County is 39.1 years. This is about the same as the state median of 39.0 years.
Economy, Income & Housing
The median household income in Platte County is $96,227. This is 36% higher than the state median of $70,702. It is also 19% higher than the national median of $80,734. The poverty rate stands at 7.0%. This is 44% lower than the state poverty rate of 12.6%. The unemployment rate is 2.7%. This is 33% lower than the state rate of 4.0%. The median home value is $345,100. Housing costs are 50% higher than the state median of $230,300. The home-value-to-income ratio is 3.6x. 67.4% of occupied housing units are owner-occupied. This homeownership rate is 1% lower than the state average of 68.1%.
Race & Ethnicity
The largest racial or ethnic group in Platte County is White (non-Hispanic), making up 76.7% of the population. Black or African American residents account for 7.4%.
Education
46.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Platte County in the top 10% of all counties in the state for educational attainment. This is 44% higher than the state rate of 32.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.7%. Notably, 18.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All figures for Platte County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Missouri and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Platte County, Missouri?
Platte County has a population of 110,371, making it the 11th most populous county in Missouri.
What is the median income in Platte County?
The median household income in Platte County is $96,227 with a poverty rate of 7.0%.
How many cities are in Platte County, Missouri?
Platte County contains 18 Census-designated places.