Genealogical Records at the King County Archives

The King County Archives maintains many records that can be useful to family history researchers. This includes many types of records that are not traditionally thought of as genealogical in nature, but which can provide information about the lives of your ancestors in King County. Did your ancestors have some kind of legal connection with the King County government? We may have record of that connection and can certainly help you locate the record you are looking for. Not all of these records are indexed by name, and some may need to be accessed by a date or a geographic location (section-township-range).

Our staff can provide limited genealogical research assistance. Research is defined as the collection, assembly or extraction of data or information from records, or the analysis of information to provide a report. We can help you most effectively if you can provide us with information that directly relates to your research topic: names, actual or approximate dates, or a short span of dates.

We also make records available to onsite researchers. Please make an appointment at least one business day in advance of your visit. You may contract with independent researchers (external link) in the Puget Sound area if you are unable to visit our facility, or if you require extensive research assistance.

Please browse our genealogical records by topic:

Birth, Marriage and Death Records

Census Records

Land Records

Miscellaneous Genealogical Records