Welcome to the Johnson County IAGenWeb site! My name is Cindy Booth Maher and I have the pleasure of being the Coordinator for the site. I hope you will find this site to be helpful as you do research of your Johnson County roots.  We have many genealogical resources available here. Just enter the surname of interest and click "Find" or start your journey by clicking on the subject related links to the left.

Johnson County IAGenWeb has wonderful support from the Iowa City Genealogical Society. Because of their contributions and the contributions of other generous volunteers, this site contains a large volume of information relating to the genealogy and history of Johnson  County.

New content is added on a regular basis. Please visit often to see what's new.    

Know that all of our content and information here is free. In support of your quest to find your family history, it's our volunteers who make that possible.  If you would like to volunteer or contribute information,  please contact me.

Johnson County Iowa is located in the fourth tier of counties north of the Iowa-Missouri line and in the third row west of the Mississippi River. It is bordered on the north by Linn, on the west by Iowa, on the east by Cedar and Muscatine and on the south by Washington and Louisa counties. 

The boundaries of Johnson County were fixed and approved 21 December 1837 according to the laws of Wisconsin Territory of which Iowa was then a part.  The county was organized in the fall of 1838 following authorization of the newly organized Territory by Governor Lucas.