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Welcome to the Washington County, Iowa Genealogy Website

If you're looking for family history in Washington County, Iowa, you have come to the right place. We are committed to providing you with free online genealogical data and resources, including links to other helpful websites.

Please email me if you have problems with, or comments about the website, or if you'd like to contribute. I will be able to do a certain amount of look-ups, but take advantage of the query boards for broader exposure of your interests. Please let me know if you are able to do volunteer look-ups.

Joanne Breen, County Coordinator

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Last Updated: 12 June 2024

Washington County was originally formed in 1838 as Slaughter County in honor of William B. Slaughter, secretary of Wisconsin Territory. A short time later it was renamed Washington County, in honor of George Washington. The first settlers arrived in Washington County in 1835. The homesteads did not start until 1836. A town was built in the present day township of Oregon named Astoria. It became the first county seat and housed the first court house. In 1839, Washington became the final location of the seat of justice.

Index to County Records


Click on the arrow to the right of the box and scroll down the list to access links to various county data and records. Records include births, deaths, marriages, cemeteries, census, newspapers, photos, military, towns, etc.

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