Platte County, Missouri Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 11th-largest in Missouri

The population of Platte County, Missouri is 108,751 as of the 2023 American Community Survey, making it the 11th-largest county in Missouri. The median household income is $95,748, the median home value is $317,600, and the median age is 38.7.

The population of Platte County has grown 26.2% since 2010 (89,714 → 113,207), a +1.68% annualized rate.

Platte County within Missouri · Source: US Census TIGER/Line via us-atlas

108,751

Population

+1.68%

Annual growth

259

People / sq mi

$95,748

Median Income

$317,600

Median Home Value

Platte County covers 420 sq mi of land at 259.0 people per square mile.

About Platte County, MO

Platte County is a county in Missouri with a population of 108,751. It ranks #11 among counties in Missouri by population. The median age is 38.7, in line with the national median. The population is 49.6% male and 50.4% female.

The median household income in Platte County is $95,748, above the US median of $74,580. 4.9% of residents live below the federal poverty level. Home values sit at a median of $317,600, with monthly rent averaging $1,247. The homeownership rate of 67.0% is close to the national rate of 64.8%.

Educational attainment in Platte County reflects 45.6% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 16.1% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 24.3 minutes each way.

Platte County Population History (2010-2024)

The county of Platte County had a population of 89,714 in 2010 and 113,207 in 2024, a 26.2% growth over 14 years. The peak was 113,207 in 2024. Average annual growth rate: 1.68%.

113,207

Population (2024)

89,714

Population (2010)

113,207

Peak (2024)

1.68%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	89,714	-	-	estimate
2011	90,912	+1,198	+1.34%	estimate
2012	92,203	+1,291	+1.42%	estimate
2013	93,435	+1,232	+1.34%	estimate
2014	94,947	+1,512	+1.62%	estimate
2015	96,552	+1,605	+1.69%	estimate
2016	98,771	+2,219	+2.30%	estimate
2017	101,256	+2,485	+2.52%	estimate
2018	102,953	+1,697	+1.68%	estimate
2019	104,726	+1,773	+1.72%	estimate
2020	107,190	+2,464	+2.35%	estimate
2021	108,752	+1,562	+1.46%	estimate
2022	110,593	+1,841	+1.69%	estimate
2023	112,112	+1,519	+1.37%	estimate
2024	113,207	+1,095	+0.98%	estimate

Race & Ethnicity

White	79.7%
Black or African American	7.6%
Asian	0.0%
Hispanic or Latino (any race)	1.7%
Two or More Races	0.1%

Age & Sex

38.7

Median Age

50.4%

Female

49.6%

Male

15.7%

Age 65+

Age Distribution

Under 5

5.8%

5–9

6.2%

10–14

7.3%

15–19

6.3%

20–24

5.7%

25–34

13.3%

35–44

14.3%

45–54

12.9%

55–59

6.8%

60–64

5.8%

65–74

9.7%

75–84

4.5%

85+

1.5%

Children (under 15): 19.3% · Seniors (65+): 15.7%

Income & Poverty

Median household income	$95,748+$26,828 vs state
Mean household income	$122,134
Per-capita income	$49,273
Poverty rate	4.9%-3.5% vs state
Unemployment rate	2.5%
Employment-to-population	66.9%

Top Industries by Employment

Professional & business services

22.7%

Finance & real estate

14.8%

Information

9.3%

Retail trade

8.8%

Manufacturing

8.6%

Education & health care

8.3%

Construction

4.8%

Public administration

4.5%

The largest employment sector in Platte County is professional & business services, accounting for 22.7% of workers.

How residents commute

0.2%

Drive alone

0.4%

Carpool

76.2%

Public transit

16.1%

Work from home

24.3 min

Avg commute

Housing

$317,600+$102,000 vs state

Median home value

$1,247

Median rent

67.0%

Homeownership rate

46,045

Total housing units

94.1%

Occupied

5.9%

Vacant

33.0%

Renter-occupied

Social & access

94.1%

With health insurance

97.6%

With broadband internet

44.2%

Foreign-born

8.3%

Veterans (18+)

12.7%

With a disability

91.7%

Speak language other than English at home

Education

96.7%

High School+

45.6%

Bachelor's+

Largest cities in Missouri

Kansas City (508,233)St. Louis (293,109)Springfield (169,432)Columbia (127,200)Independence (121,944)Lee's Summit (102,583)O'Fallon (92,697)St. Joseph (71,542)St. Charles (71,048)Blue Springs (59,416)All Missouri cities →

Other counties in Missouri

St. Louis County (996,618)Jackson County (717,021)St. Charles County (409,830)Greene County (301,121)St. Louis city (293,109)Clay County (255,566)Jefferson County (228,227)Boone County (185,874)Jasper County (123,532)Cass County (109,393)All Missouri counties →

Part of Missouri

Missouri demographic profile All Missouri data →

Metro areas in Missouri

St. Louis (2,809,414)Kansas City (2,202,006)Springfield (481,671)Columbia (212,850)Joplin (202,258)Jefferson City (150,147)St. Joseph (120,609)Cape Girardeau (97,813)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Platte County, Missouri has a population of 108,751 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 11th-largest county in Missouri. Population density is 259 people per square mile.

The population of Platte County has grown 26.2% since 2010 (89,714 → 113,207), a +1.68% annualized rate.

The median household income in Platte County, Missouri is $95,748, with mean (average) household income of $122,134 and per-capita income of $49,273. 4.9% of residents live below the federal poverty level.

In Platte County, the largest racial and ethnic groups are White (79.7%), Black or African American (7.6%), Hispanic or Latino (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Platte County, Missouri is 38.7 years. Residents are 50.4% female and 49.6% male.

The median home value in Platte County is $317,600 and median monthly rent is $1,247. 67.0% of occupied housing units are owner-occupied. The county has 46,045 total housing units, 5.9% of which are vacant.

The largest employment sector in Platte County, Missouri is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 2.5%.

Kansas City is among the largest cities associated with Platte County, Missouri, with a population of 508,233.