U.S. Census data is now available in free and fully searchable formats for most decennial censuses, up to and including 1940. Here is one example: 1940 U.S. Census.
For this reason, we do not include federal census data for Chickasaw County on this IAGenWeb site, with one exception - the 1910 census for Chickasaw Township, because a previous volunteer, Misti Ann Adams, did a fantastic job of transcribing the census data in spreadsheet format.
Chickasaw County was first “settled” by its first non-native, white European residents in the 1850s. See History. By 1860, the U.S. Census indicated that it already had 4,336 residents. This rapid growth continued, surging to a high population of 17,037 by 1900. By 2010, the population had shrunk to 12,439.
