USGenWeb  Population History 
OBrien County
IAGenWeb

The following table shows the population history for various towns of O'Brien County.  For information about the population in 1880, see this.

Year      Archer     Calumet     Hartley     Paullina     Primghar     Sanborn     Sheldon     Sutherland     Other     County Total  
1890 519 510 519 1075 1478 490 ? ?
1900 113 1006 617 814 1247 2282 722 10184 16985
1910 351 242 1106 796 733 1174 2941 664 9255 17262
1920 184 266 1306 987 921 1497 3488 876 9526 19051
1930 150 249 1272 1013 962 1213 3320 802 9428 18409
1940 178 274 1503 1230 1081 1344 3768 875 9040 19293
1950 167 250 1611 1289 1152 1337 4001 835 8329 18970
1960 209 225 1738 1329 1131 1323 4251 883 7751 18840
1970 134 219 1694 1257 995 1465 4535 875 6348 17522
1980 134 212 1700 1224 1050 1398 5003 897 5354 16972
1990 145 160 1632 1134 950 1345 4904 714 4502 15444
2000 126 181 1733 1124 891 1353 4914 707 4173 15102




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