Rio Arriba County, New Mexico Genealogy
- 1 County Courthouse
- 2 History
- 3 Places/Localities
- 4 Resources
- 5 Societies and Libraries
- 6 Family History Centers
- 7 Web Sites
- 8 References
- Until 1821 - New Spain controlled land that later would become New Mexico and Arizona. Some records of early settlers may have been sent to an archives in Seville, Spain, or to archives in Mexico City.
- In 1821 - Mexico had jurisdiction over the land that later would become New Mexico and Arizona. Some records of this period may have been sent to archives in Mexico City.
- 22 September 1846 - Rio Arriba County was created based on an old Mexican government partido as one of seven original New Mexico counties under the Kearny Code of laws for the occupied Mexican territory. This code is named after General Stephen W. Kearny
- 1848 - New Mexico Territory formally became a part of the United States when the Mexican-American War ended in 1848 with the signing of the Treaty of Guadalupe Hidalgo.
- 9 January 1852 - All New Mexico counties were redefined. Rio Arriba county was extended west to the California border including land in present day Arizona and Nevada.   Residents that lived far from the county seat, probably didn't send many records to the county offices.
- 29 December 1863 - Arizona Territory created from the western half of New Mexico Territory. Rio Arriba county was reduced in size to the portion still within New Mexico Territory.
- 24 February 1887 - RIO ARRIBA county lost land to creation of SAN JUAN county.
See also Previous Jurisdictions to land in Arizona for further details.
- Archuleta County, Colorado
- Conejos County, Colorado
- Los Alamos, New Mexico
- Mora, New Mexico
- San Juan, New Mexico
- Sandoval, New Mexico
- Santa Fe, New Mexico
- Taos, New Mexico
Cemeteries in Rio Arriba county at Find A Grave
The early population of New Mexico was generally both Spanish-speaking and Catholic. As such, the sacramental records of the towns and villages present an important avenue of research and may provide the names of several generations within one document. Catholic sacramental records (baptisms, marriages, and burials) are rich in vital record information and may prove a valuable alternative in cases where vital records are not available. The New Mexico Genealogical Society has published an online article titled, Locating Catholic Church Records in New Mexico, Rio Arriba County. This index of church records includes the parish, the location of the church, the missions included and microfilm dates and reference numbers in chart format. Some of the films are available in the Family History Library, and those that aren’t at the library have reel numbers found in the Santa Fe archives. 
If you wish to search the recorded land records of Rio Arriba county you must visit the County Clerk's Office at 7 Main Street, Tierra Amarilla, New Mexico or 1122 Industrial Park Road, Española, New Mexico.
Societies and Libraries
Family History Centers
- Introduction to LDS Family History Centers
- Espanola New Mexico Family History Center
- Espanola, New Mexico.
- USGenWeb project. May have maps, name indexes, history or other information for this county. Select the state, then the county. *Family History Library Catalog
- Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Rio Arriba County, New Mexico page 474, At various libraries (WorldCat); FHL Book 973 D27e 2002.
- "Courts and Judicial Powers, Sec. 7” Kearny Code: Laws for the Government of the Territory of New Mexico, September 22, 1846 (Santa Fe, N. Mex.: S. W. Kearny, 1846), 47. Digital online edition.
- N.M. Terr. Laws 1851, 1st assy., 2d sess. /p. 291
- William Thorndale, and William Dollarhide, Map Guide to the U.S. Federal Censuses, 1790-1920 (Baltimore: Genealogical Publishing, 1987), 26. At various libraries (WorldCat); FHL Book 973 X2th.
- Original Counties of New Mexico Territory (map) at http://www.nmgs.org/Graphics/nmcoun-orig.jpg (accessed 9 August 2011).
- U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165
- N.M. Terr. Laws 1887, 27th assy., ch. 13/p. 38