San Juan County, New Mexico Genealogy Records

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

Selected inventory review: 2026-11-02. Selected newspaper catalog metadata checked for state and county attribution. Publication dates do not establish complete issue holdings or online access. Library of Congress newspaper directory

Formed
1861
County seat
Aztec
Bernalillo CountyCibola CountyLos Alamos CountyMcKinley CountyRio Arriba CountySandoval CountySanta Fe CountySan Juan CountyMcKinleyRio ArribaSandovalSan Juan
San Juan CountyToday's boundaries ยท U.S. Census Bureau

Listed record inventories

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

See the repository's descriptions and search options

Repository access note: Selected newspaper titles cataloged by the Library of Congress with explicit county geography. Priority is given to titles beginning by 1950; up to five later titles are included where no earlier dated title is listed for that county. Dates describe publication history, not the issues available at a library. Multiple format records with the same title, place and dates are grouped. The catalog may describe paper, microfilm or online resources. Open ends and the word Current reflect the catalog description; confirm present availability and exact holdings with the libraries listed on the linked record.

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

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

Boundaries and parent counties

Formed from: Taos County

Check the parent county for earlier records: Taos County

Rio ArribaBernalilloSan JuanSan Juan
San Juan boundary in 1887Today's boundaryBoundaries: Newberry Library, Atlas of Historical County Boundaries

The Atlas data for San Juan County begins in 1887, later than the 1861 date above, so this is the earliest boundary on file, not its original one.

Records stay with the county that created them. If your ancestor lived here before 1861, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.

Research tip

New Mexico's Catholic church records, which go back to the 1600s, are often the best source for early families. Statewide registration of births and deaths began around 1920.