Washington County, Idaho Genealogy

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Washington County, Idaho
Map of Idaho highlighting Washington County
Location in the state of Idaho
Map of the U.S. highlighting Idaho
Location of Idaho in the U.S.
Founded February 20, 1879
County Seat Weiser
Address Washington County Courthouse
256 East Court
Weiser, ID 83672-0670
Website: www.co.washington.id.us
Named for: George Washington
George Washington.JPG
United States Gotoarrow-kelly.png Idaho Gotoarrow-kelly.png Washington County 
Washington upclose.gif

Quick Facts

Wikipedia has more about this subject: Washington County, Idaho

Named for George Washington, first President of the United States of America.

Parent County

20 February 1879: Washington County was created from Boise County. [1]

Boundary Changes

3 March 1911: Adams County created from part of Washington County

Record Loss


The above list of places includes incorporated cities and towns, unincorporated towns and communities, and place names that may have been used in family histories. Some have well-organized records and even have web sites. Some are simply social communities with no official records, but which may be referenced in small-town newspapers. The list is provided to help researchers identify localities within the county. As records or histories of these localities are identified, a page will be added for each of these place names. This list of places in Washington County, Idaho was compiled from the Lists of Places in Idaho in Wikipedia and from the map of Washington County in Virtual Earth.


Many of the older court, land, naturalization, probate, pension, and vital records for Washington County have been microfilmed and are available at the Family History Library in Salt Lake City and through their family history centers. They are also available at the Idaho State Archives in Boise. Details of the county records in these respective institutions can be obtained from their online catalogs or listings. Original records which have been microfilmed and more recent records are in the county courthouse in Weiser [2].

Archives and Libraries

Many public libraries provide internet access to sites of value to the family historian. Some have special collections of historical and cultural interest, as well. The following libraries may have some resources of value, but use of some or all of them may require a visit to the library.

  • Cambridge District Library
    120 N Superior St
    Cambridge, ID 83610
    Phone: (208) 257-3434
  • Midvale District Library
    70 E Bridge St
    Midvale, ID 83645
    Phone: (208) 355-2213
  • Weiser Public Library
    628 E 1st St
    Weiser, ID 83672
    Phone: (208) 549-1243


There are many cemeteries in Washington County. For a list of those that have been identified, and links to transcriptions and/or photographs of tombstones, go to Washington County, Idaho Cemetery Records.

For the cemeteries in or immediately adjacent to the cities, please see the city pages for the cities listed above.


For a summary of census records for the state of Idaho, see Idaho Census Records.

The 1890 federal census for Idaho was destroyed. However, the Idaho State Archives is creating a list of 1890 Idaho residents by indexing a variety of records, 1885-1894. This reconstructed list will substitute for the destroyed 1890 federal census. Washington County is included in this reconstructed census.

Church History and Records (Rural)

Gotoarrow-kelly.png Please refer to the cities for local churches.

County Commissioners' Records

The minute books of the County Commissioners contain interesting tidbits of history about the county as well as the names of individuals appealing to the County Commissioners for action on issues of concern to them. Minutes of those meetings were recorded from the formation of the county, for most counties. Some counties now post the minutes of current meetings online.

Most of these records have been preserved in the county courthouses of the State of Idaho. Few have been microfilmed. Contact the county clerk for information about years covered and availability.

Court Records

Judgment Book


The Idaho State Archives has a collection of city, county, state and regional directories.


A Washington County History by Judge Frank Harris is available online.

Land and Property


Military History and Records

World War I draft registration cards, 1917-1918, for Washington County have been microfilmed. Copies of these records are available at the Family History Library (their microfilm number 1452223) and are also available online at Ancestry.com, for a subscription fee. The original cards are maintained in the Southeast Regional Archives of the National Archives and Records Administration (NARA) in East Point, Georgia and have been microfilmed by the National Archives as their Microcopy M1509.

Miscellaneous Series



  • Upper County Reporter
  • Weiser Signal - American


Copies of issues of many Idaho newspapers are found in the collections of the Idaho State Archives.

Probate Records


Any existing tax assessment rolls for Washington County should be in the courthouse in Wesier and would need to be accessed by visiting there.

Vital Records


The Birth Registers for Washington County, 1907-1911, have been microfilmed and are available at the Idaho State Archives in Boise and at the Family History Library in Salt Lake City, Utah. Birth records, 1911 to present, for individuals born in Washington County are included in and recorded at the state level. These records are restricted for a period of one hundred years from the time of the individual's birth but can be obtained by following the guidelines as issued by the State of Idaho. See the Vital Records section under the subject Idaho for more details.

There are 443 births recorded in Washington County online at Idaho Births and Christenings.


Nearly 13,200 marriages, 1879-1969, are listed on the Western States Marriage Index.

There are 244 Washington County marriages listed in Idaho Marriages.


The Death Registers for Washington County, 1907-1911, have been microfilmed and are available at the Idaho State Archives in Boise and at the Family History Library in Salt Lake City. After 1911, deaths occurring in Washington County are included in the state-wide registration program. These records are restricted for a period of fifty years from the time of the individual's death but can be obtained by following the guidelines as mandated by the State of Idaho. See the Vital Records section under Idaho for details Idaho Vital Records.

Copies of death certificates from 1911-1954 are on microfilm and can be used at the Idaho State Archives in Boise, the Family History Library in Salt Lake City, Utah, BYU-Idaho University Library in Rexburg and several other locations.

A state-wide index to Idaho Deaths, 1911-1956 is available online. Efforts to expand this index to 1960 are underway. Another version is Idaho Death Index 1911-1956.

There are 474 Washington County deaths listed online at Idaho Deaths and Burials.

Societies, Libraries and Museums



  1. WorldCat 50140092 FHL CollectionHandybook for Genealogists: United States of America, 10th ed.] (Draper, Utah: Everton Pub., 2002)
  2. Idaho State Historical Society Reference Series, Number 10, Counties and County Seats, Reissued July, 1991.