Johnson County

Johnson County is located in Kansas, United States.

Quick Facts: Johnson County
County Name
Johnson
State
Kansas (KS)
HASC Code (County)
US-KS-JO
FIPS Code (County)
20091
County Seat
Olathe
Largest City (in County)
Overland Park
Population (County)
451,086
Land Area
477.00 sq mi (1,235.00 km²)
Time Zone
UTC-6
Current Time
UTC-6 (Invalid timezone)

Johnson County is a county located in the U.S. state of Kansas. As of the most recent data available, the county has a population of approximately 451,086 people, with a population density of about 945.67 persons per square mile.

The county spans a total land area of 477.00 square miles (1,235.00 square kilometers). The administrative center and county seat is Olathe, which often serves as a hub for local governance and services. The largest city within the county by population is Overland Park.

Geographically, Johnson County experiences varied elevations, with its highest point at Gardner 1,160 ft and its lowest point at De Soto 842 ft. The region operates in the UTC-6.

State Context: Kansas
State Capital
Topeka
Largest City (State)
Wichita
State Nickname
Sunflower State
State Elevation
High: Kanorado 3,908 ft | Low: Coffeyville 736 ft
State Pop. Density
33.78/sq mi
State Website

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