What is the largest city in Platte County, MO?

Parkville is the largest city or town in Platte County, with about 8,366 residents.

How many ZIP codes are in Platte County?

Platte County includes 14 ZIP Code Tabulation Areas, including 64018, 64028, 64079, 64092, 64098.

What is the population of Platte County, MO?

About 110,371 people live in Platte County, based on American Community Survey 5-year estimates.

What counties border Platte County?

Platte County borders Clay County, Wyandotte County, KS, Buchanan County, Leavenworth County, KS, Clinton County, Atchison County, KS.

Platte County, MO: Cities, ZIP Codes & Local Data

Population

110,371

Land area

420sq mi

People per sq mi

263

ZIP codes

14

Platte County at a glance

Platte County is about 2.9 times as dense as Missouri as a whole.
It is the 11th most populous of 115 counties in Missouri.
Households here earn a median of $96,227 a year, 36% more than the Missouri figure of $70,702.
A typical owner-occupied home is valued at $345,100 (50% above Missouri) and median rent is $1,334 a month.
The biggest population centers are Parkville (8,366), Platte City (4,824) and Riverside (4,276).

Local data for Platte County, MO

Counts from official public data

Housing and community stats

Platte County, MO, American Community Survey 2020-2024

Full profile

Median household income

$96,227

Poverty rate

7.0%

Median home value

$345,100

Prices +5.1% in a year

Median rent

$1,334/mo

Homeownership

67.4%

Bachelor's or higher

46.5%

Median age

39.1

Average commute

24.3 min

Largest reported origins and ancestries: German Americans (25,812), Irish Americans (14,487), Mexican Americans (5,168).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

3.2%

Aug 2026, -0.4 pts in a year

Average annual pay

$60,165

48,369 jobs, 2025

Income per person

$75,607

BEA, 2024

Federal spending

$952M

FY 2026, $8,917 per person

PPP loans

$217M

2,975 loans, 23,996 jobs reported

Campaign donations

$981K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Platte County, MO, workers 16 and older. American Community Survey 5-year estimates

Drove alone73.4%
Carpooled5.4%
Public transit0.2%
Walked0.4%
Bicycle0.0%
Taxi, ride-hailing, motorcycle or other1.4%
Worked from home19.2%

Average one-way commute: 24.3 minutes for people who do not work from home.

Environment and hazard risk

Platte County, MO, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: heat wave

Storm events since 1996

703

Most often hail

Flood insurance policies

109

0.3% of homes, county

July high / Jan low

88° / 20°F

39.3 inches of rain a year

Hazards, floods and storm history Check a flood zone 9 historic places

Health statistics

Share of adults in Platte County, MO, CDC PLACES estimates

All 40 measures

Obesity

37.0%

U.S. 33.3% +3.7 pts

Diabetes

10.0%

U.S. 12.1% -2.1 pts

Smoking

12.1%

U.S. 12.8% -0.7 pts

Uninsured (18-64)

7.0%

U.S. 11.1% -4.1 pts

Cities, towns and ZIP codes in Platte County

Population shown

·

Frequently asked questions

What is the largest city in Platte County, MO?: Parkville is the largest city or town in Platte County, with about 8,366 residents.
How many ZIP codes are in Platte County?: Platte County includes 14 ZIP Code Tabulation Areas, including 64018, 64028, 64079, 64092, 64098.
What is the population of Platte County, MO?: About 110,371 people live in Platte County, based on American Community Survey 5-year estimates.
What counties border Platte County?: Platte County borders Clay County, Wyandotte County, KS, Buchanan County, Leavenworth County, KS, Clinton County, Atchison County, KS.