Listed record inventories
Selected holdings and indexes for Union County, checked against the repository descriptions linked below. Date spans may contain gaps; an index is not a complete set of original records.
Newspapers
- Clayton Enterprise (Clayton, Union County, N.M.)1888-1906
- Clayton Evening Citizen (Clayton, Union County, N.M.)1909-1909
- El Fenix (Clayton, Nuevo México)1899-19??
- Folsom Springs Metropolitan (Folsom, N.M.)1890-189?
- Grenville News (Grenville, N.M.)1921-1922
- La Unión Del Pueblo (Clayton, N.M.)1913-19??
- The Actual Settler (Folsom, N.M.)1899-1???
- The Clayton Citizen (Clayton, Union County, N.M.)1906-19??
- The Folsom Metropolitan (Folsom, N.M.)1890-1890
- The Union County Leader (Clayton, N.M.)1929-Current
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
- Union County official website
Hours, addresses and phone numbers for the county clerk and the district court, and any online record search the county offers.
- The county clerk
Deeds and other land records, marriage licenses, and some probate records (formal probate is in district court).
- The district court
Civil and criminal cases and divorces.
- The New Mexico State Records Center and Archives
In Santa Fe: Spanish, Mexican and territorial records, including land grants.
- New Mexico State Records Center and Archivesfree
The state archives in Santa Fe, with Spanish, Mexican and territorial records, land grants and court records.
- FamilySearch Catalogfree
Search by place for "New Mexico, Union" 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: Colfax County, Mora County, San Miguel County
Check the parent counties for earlier records: Colfax County, Mora County
Later formed partly from Union County: Harding County, Quay County
Records stay with the county that created them. If your ancestor lived here before 1894, 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.