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Kansas Counties

Johnson County, Kansas

Date Established: August 25, 1855
Date Organized:
Location: Kansas map showing location of Johnson County
County Seat: Olathe
Origin of Name: In honor of the Rev. Thomas Johnson (1802-1865), who established a mission to the Shawnee Indians in 1829 (Shawnee Indian Mission in present-day Fairway, Johnson Co.).
Cities & Townships
PlacePopulation (2010 census)
Aubry Township  4,204 
Bonner Springs (city)  0 
Countryside (city)  (Defunct)  
De Soto (city)  5,720 
Edgerton (city)  1,671 
Fairway (city)  3,882 
Gardner (city)  19,123 
Gardner Township  2,905 
Lake Quivira (city)  866 
Leawood (city)  31,867 
Lenexa (city)  48,190 
Lexington Township  1,312 
McCamish Township  996 
Merriam (city)  11,003 
Mission (city)  9,323 
Mission Hills (city)  3,498 
Mission Township  (Defunct)  
Mission Woods (city)  178 
Monticello Township  (Defunct)  
Olathe (city)  125,872 
Olathe Township  865 
Overland Park (city)  173,372 
Oxford Township  1,959 
Prairie Village (city)  21,447 
Roeland Park (city)  6,731 
Shawnee (city)  62,209 
Shawnee Township  (Defunct)  
Spring Hill (city)  3,100 
Spring Hill Township  2,021 
Westwood (city)  1,506 
Westwood Hills (city)  359 
Total population: 544,179 

Township map of Johnson County, 2000
Population:
1860 (4,364)
1870 (13,684)
1880 (16,853)
1890 (17,385)
1900 (18,104)
1910 (18,288)
1920 (18,314)
1930 (27,179)
1940 (33,327)
1950 (62,783)
1960 (143,792)
1970 (217,662)
1980 (270,269)
1990 (355,054)
2000 (451,086)
2010 (544,179)
Other Maps: Township map, 1940
Other Resources: Post offices in Johnson County
Cemeteries in Johnson County, As of 1906
Newspapers Available on Microfilm
Townships and Independent Cities in Johnson County
Bibliography
Kansas Memory
Links to Other Sites: Johnson County page [Blue Skyways]
Johnson County GenWeb
Early Kansas Maps [KanColl]
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