Rio Grande County, Colorado Genealogy Records

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

Selected inventory review: 2026-11-02. Selected inventory entries checked against official repository descriptions and geographic catalog metadata. Coverage and access limits are explained with the inventory. Official inventory or catalog

Formed
1874
County seat
Del Norte
Alamosa CountyArchuleta CountyCuster CountyHinsdale CountyHuerfano CountyMineral CountySaguache CountyConejos CountyCostilla CountyRio Grande CountyAlamosaArchuletaHinsdaleMineralConejosCostillaRio Grande
Rio Grande CountyParent counties (search here for earlier records)Today's boundaries · U.S. Census Bureau

Listed record inventories

Selected records and local publications, with source links and the coverage described by each repository. Consult the access note for gaps, formats and research requirements.

Newspapers

Open the source inventory or catalog

Repository access note: Selected newspaper titles whose Library of Congress catalog records explicitly name this county and state. Publication dates describe the title’s history, not surviving issues, library holdings or online images. Uncertain dates and open ends follow the catalog. Consult the linked title records for holding libraries and access; multiple formats of the same title/place/date are grouped. This is a selection from a focused county query, not an exhaustive newspaper census.

Source: Library of Congress, Directory of U.S. Newspapers in American Libraries.

Where to find the records

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

Boundaries and parent counties

Formed from: Conejos County, Costilla County

Check the parent counties for earlier records: Conejos County, Costilla County

Later formed partly from Rio Grande County: Mineral County

FremontSaguacheLakeConejosCostillaRio GrandeRio GrandeConejosCostilla
Rio Grande as created in 1874Where 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 1874, search the parent county. The Atlas of Historical County Boundaries shows each boundary change.

Research tip

A 1907 law set up statewide registration of births and deaths in Colorado; the state's own records begin with deaths in 1900 and births in 1910. Before 1861 the area was part of Kansas, Nebraska, Utah and New Mexico territories, so an early settler's records can be in any of them.