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Kansas Counties

Decatur County, Kansas

Date Established: March 20, 1873
Date Organized: December 15, 1879
Location: Kansas map showing location of Decatur County
County Seat: Oberlin
Origin of Name: Named in honor of Commodore Stephen Decatur (1779-1820), a U.S. navy hero during the Tripolitanian Wars and the War of 1812.
Cities & Townships
PlacePopulation (2020 census)
Allison Township  49 
Altory Township  16 
Bassettville Township  18 
Beaver Township  69 
Center Township  52 
Cook Township  19 
Custer Township  48 
Dresden Township  91 
Finley Township  43 
Garfield Township  42 
Grant Township  17 
Harlan Township  31 
Jennings Township  109 
Liberty Township  41 
Lincoln Township  168 
Logan Township  39 
Lyon Township  19 
Oberlin (city)  1,644 
Oberlin City Township  (Defunct)  
Oberlin Township  81 
Olive Township  53 
Pleasant Valley Township  27 
Prairie Dog Township  27 
Roosevelt Township 
Sappa Township  17 
Sherman Township  17 
Summit Township  20 
Total population: 2,764 

Township map of Decatur County, 2000
Population:
1880 (4,180)
1890 (8,414)
1900 (9,234)
1910 (8,976)
1920 (8,121)
1930 (8,866)
1940 (7,434)
1950 (6,185)
1960 (5,778)
1970 (4,988)
1980 (4,509)
1990 (4,021)
2000 (3,472)
2010 (2,961)
2020 (2,764)
Other Resources: Post offices in Decatur County
Cemeteries in Decatur County, As of 1906
Newspapers Available on Microfilm
Townships and Independent Cities in Decatur County
Bibliography
Kansas Memory
Links to Other Sites: Decatur County GenWeb
Early Kansas Maps [KanColl]
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