Johnson County Population

Facts - Post Offices - County Officials - Encyclopedia

Year Population
1840 3,433
1850 5,227
1860 7,612
1870 9,152
1880 11,565
1890 16,758
1900 17,448
1910 19,698
1920 21,062
1930 19,289
1940 18,795
1950 16,138
1960 12,421
1970 13,630
1980 17,423
1990 18,221
2000 <22,781/td>