The state abbreviations have not always been what they are today.

Look at the following census page (1850 U.S. census, DeKalb County, Indiana, population schedule, Auburn, page 2 (penned); digital image, ( : accessed 17 October 2017), citing National Archives microfilm publication M432, roll 142).

Where was each person in the Poffenberger household born? Virginia, Ohio, Indiana, Indiana, Indiana, Virginia, and Maryland. The state abbreviation used for Indiana is Ia. This may look familiar when you are looking at the state abbreviations for today – IA is the abbreviation for Iowa.






Be careful!