Find Multnomah County Genealogy

Multnomah County sits in northwestern Oregon and holds the city of Portland within its borders. Genealogy research here taps into the most extensive record collections in the state. Searching Multnomah County archives uncovers documents that stretch back to 1854, when the county first formed. With over 800,000 residents today, this county has deep layers of records for anyone tracing ancestry in Oregon's most populated region.

Multnomah County Clerk Records

The Multnomah County Clerk's office is the hub for local records. Marriage licenses, property deeds, and lien filings are all stored here. The county was named for the Multnomah Indians who lived along the Columbia and Willamette rivers. It formed in 1854, and the clerk has kept records from that year forward. These files form the backbone of Multnomah County genealogy.

Property records in Multnomah County are vast. Portland grew from a small frontier settlement into a major West Coast city. Each stage of that growth left a trail of deeds, plat maps, and assessment rolls. The county offers an online property search tool through its Assessment and Taxation department. This tool lets you look up current and past ownership details from your home. For genealogy, these property records can place an ancestor at a specific address in Multnomah County and trace how long they lived there.

Marriage records from Multnomah County go back to 1855. They are among the oldest in the state. Each marriage record lists the names of the bride and groom, their ages, and often their birthplaces. Early Multnomah County marriages also name witnesses. These details are gold for genealogy work. A single marriage record can connect two families and open up new lines of research.

The image below shows the Multnomah County main portal, which links to various departments that hold genealogy records.

This portal gives access to property searches and other Multnomah County records useful for tracing family roots in the Portland area.

Portland Archives and Multnomah Genealogy

The Portland City Archives holds records that predate state registration. Birth registers cover 1864 to 1917. Death records span 1862 to 1917. Oregon did not require statewide vital records until 1903, so these Portland registers fill a critical gap. For Multnomah County genealogy, they may be the only source for a birth or death that took place in Portland during those years.

The Archives sits at P.O. Box 9072, Portland, OR 97207. You can write to request copies or visit in person. The collection also includes city council minutes, police records, and public works files. These records show the daily life of Portland residents in ways that county files do not. A police blotter might name a person involved in a minor dispute. Council minutes might list petitioners who asked for road improvements near their home.

Portland's growth from a river town to a major city means the Archives holds a huge volume of records. Thousands of people moved to Multnomah County during the late 1800s and early 1900s. Ship passenger lists, railroad records, and immigration files all play a part in tracing these newcomers. The Portland City Archives can help you connect a Multnomah County ancestor to their arrival in Oregon.

The Portland City Archives page shown above lists the types of records available for research, including those vital registers that predate state-level recording.

Note: Some Portland City Archives records require advance notice to pull from storage, so contact them before your visit.

Multnomah County at the State Archives

The Oregon State Archives holds the most extensive set of county records in the state for Multnomah County. Circuit Court case files date from 1854. Probate records, naturalization papers, and school records are all part of the collection. The sheer size of the Multnomah County holdings reflects the county's role as Oregon's population center.

Probate files from Multnomah County are rich with detail. Estate inventories list household goods, bank accounts, and real property. They name heirs and sometimes include personal letters or family bibles listed as possessions. For genealogy, a single probate file can reveal an entire family structure. It can show who was alive at the time of death, where they lived, and what they owned in Multnomah County.

Circuit Court records cover a wide range of cases. Divorce filings, land disputes, and criminal trials all appear. Each case file names the parties involved and may include testimony from witnesses. Under ORS Chapter 192, these court records are public and open for research. The State Archives has indexed many of the Multnomah County files, which makes searching faster.

This State Archives page for Multnomah County shows the full inventory of records held in Salem, along with their date ranges and formats.

Multnomah County Cities and Records

Multnomah County includes several cities, but Portland and Gresham are the largest. Portland is the county seat and the biggest city in Oregon. Gresham sits to the east and grew rapidly in the twentieth century. Each city has its own set of local records that add to the Multnomah County genealogy picture.

Portland city directories date back to the 1860s. They list residents by name, address, and occupation. For genealogy, directories confirm that a person lived in Multnomah County at a given time. They can also reveal a person's line of work, which may lead to more records. Gresham grew later, but its records from the early 1900s forward cover a growing suburban community with strong ties to farming and small business.

Church records from both cities add another layer. Portland had dozens of churches by the 1880s. Baptism records, membership rolls, and burial logs all name residents of Multnomah County. Some of these church records have been microfilmed and are available through the Family History Library. Others remain in the hands of the congregations themselves.

Note: Portland city directories are available at the Multnomah County Library and through some online genealogy databases.

Multnomah County Vital Records

State-level birth and death records date from 1903. The Oregon Health Authority handles requests for certified copies. For Multnomah County, the Portland City Archives fills the gap before 1903 with its own birth and death registers. This makes Multnomah County one of the best-documented areas in Oregon for genealogy.

Marriage records sit at the county clerk's office. Multnomah County marriage records from 1855 are among the oldest in the state. Under ORS 192.420, most public records must be provided upon request. Some vital records have limits on who can access them, depending on the age of the record and the requester's tie to the person named.

Cemetery records provide yet another source. Lone Fir Cemetery in Portland dates to 1855. River View Cemetery opened in 1882. Both hold records of burials that span the full history of Multnomah County. These logs list names, dates of death, and sometimes family relationships. They are a strong resource for genealogy when other records fall short.

How to Search Multnomah Records

Multnomah County has so many records that it helps to have a plan. Start with the record type most likely to answer your question. Property records work well for placing an ancestor in the county. Marriage records connect families. Probate files reveal who inherited what.

Key steps for Multnomah County genealogy:

• Search the county clerk's office for marriage and property records
• Check the Portland City Archives for pre-1903 birth and death registers
• Visit the Oregon State Archives for probate and court files
• Review Portland city directories at the Multnomah County Library
• Look into cemetery records at Lone Fir and River View

The Multnomah County Library system is one of the best in the state. Its genealogy collection includes local newspapers on microfilm, city directories, and published family histories. The library also provides access to online databases that cover Multnomah County records. These tools can save time and help you zero in on the records you need for your genealogy research.

Nearby Counties

Multnomah County borders Washington County, Clackamas County, Columbia County, Hood River County, and Clatsop County. If your ancestors lived near the county line, records may be filed in a neighboring county.