Clark County, Idaho Genealogy Records

Selected record inventories for Clark County, their listed years, and where to ask for access.

Selected inventory review: 2026-11-02. Selected repository catalog metadata reviewed. This is not a complete holdings audit or certification of current access. See the repository note for limitations. Official repository catalog or holdings guide

Formed
1919
County seat
Dubois
Bannock CountyBingham CountyBlaine CountyBonneville CountyButte CountyCaribou CountyCuster CountyJefferson CountyLemhi CountyLincoln CountyMadison CountyMinidoka CountyPower CountyTeton CountyFremont CountyClark CountyBinghamBlaineBonnevilleButteCusterJeffersonLemhiMadisonFremontClark
Clark CountyParent county (search here for earlier records)Today's boundaries · U.S. Census Bureau

Listed record inventories

Selected holdings and indexes for Clark County, checked against the repository descriptions linked below. Date spans may contain gaps; an index is not a complete set of original records.

Naturalization records

Court records

Land records

Probate records

Vital records

See the repository's descriptions and search options

Repository access note: Selected Idaho State Archives county microfilm holdings, grouped by series description. Date envelopes combine listed film segments and may contain gaps. These are film holdings, not a claim of online images. Consult the linked inventory for roll, item, volume and exact dates. Historic Alturas County items were not reassigned to present-day counties.

Sources: the catalogs and repository descriptions linked on the entries above. Selected inventories do not establish complete coverage of every record type or online access to original documents. Read the repository access note for source dates and limitations.

Where to find the records

  • Clark County official website

    Hours, addresses and phone numbers for the county recorder and the district court, and any online record search the county offers.

  • The county recorder

    Deeds and other land records, and marriage licenses (the county clerk is also the recorder).

  • The district court

    Probate (wills and estates), divorces and civil and criminal cases.

  • The Idaho State Archives

    In Boise: county records, territorial records and the state's historical newspapers.

  • Idaho State Archivesfree

    The state archives in Boise, with county and territorial records, photographs and historical newspapers.

  • FamilySearch Catalogfree

    Search by place for "Idaho, Clark" to find filmed and digitized records, many viewable free online with a FamilySearch account.

Offices change their hours and access rules; call before you visit.

Boundaries and parent counties

Formed from: Fremont County

Check the parent county for earlier records: Fremont County

CusterLemhiBonnevilleLincolnMinidokaTetonMadisonJeffersonBinghamButteBlaineFremontClarkClarkFremontCusterLemhiBonnevilleTetonMadisonJeffersonBinghamButteBlaine
Clark as created in 1919Where its land was the day beforeToday's boundaryBoundaries: Newberry Library, Atlas of Historical County Boundaries

Records stay with the county that created them. If your ancestor lived here before 1919, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.

Research tip

Idaho began statewide registration of births and deaths in 1911. Before 1863 its land was part of Oregon and Washington territories (the east also of Nebraska and Dakota territories), and some early settlers in the southeast recorded events in Cache County, Utah, thinking they lived there.