Cass County, Nebraska Genealogy Records

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

Selected inventory review: 2026-11-02. Selected county records checked against the linked official catalog or archive guide. Date spans and access limits are described on the county page. History Nebraska county finding aid

Formed
1854
County seat
Plattsmouth
Butler CountyColfax CountyDodge CountyDouglas CountyGage CountyJefferson CountyJohnson CountyLancaster CountyNemaha CountyOtoe CountySaline CountySarpy CountySaunders CountySeward CountyWashington CountyCass CountyButlerDouglasLancasterOtoeSalineSaundersSewardCass
Cass CountyToday's boundaries · U.S. Census Bureau

Listed record inventories

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

Schools

County government

Tax records

Court records

Census records

Marriages, births and deaths

See the repository's descriptions and search options

Repository access note: Selected series from the History Nebraska county finding aid. Date spans describe the listed material and may include gaps. The guide distinguishes original records, microfilm and copies; check it for precise holdings and access. This is not a complete inventory of records still held by county offices.

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

  • Cass County official website

    Hours, addresses and phone numbers for the register of deeds, the county clerk, the county court, the clerk of the district court and history Nebraska, and any online record search the county offers.

  • The register of deeds

    Deeds and other land records.

  • The county clerk

    Marriage licenses and records (some counties' early marriage records are at History Nebraska).

  • The county court

    Probate (wills and estates).

  • The clerk of the district court

    Divorces, naturalizations and civil and criminal cases.

  • History Nebraska

    In Lincoln: the State Archives, with county records, the state censuses and newspapers.

  • History Nebraska (State Archives)free

    The state historical society and State Archives in Lincoln, with county records, newspapers and photographs.

  • FamilySearch Catalogfree

    Search by place for "Nebraska, Cass" 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: Land not yet in any county

Later formed partly from Cass County: Lancaster County, Otoe County, Seward County, York County

Nebraska TerritoryCassCassNebraska Territory
Cass as created in 1854Where 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 1854, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.

Research tip

Nebraska began statewide registration of births and deaths in 1904. Many settlers claimed land under the Homestead Act; their federal case files are at the National Archives and can name family and neighbors.