Valencia County, New Mexico Genealogy

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United States Gotoarrow.png New Mexico Gotoarrow.png Valencia County

Guide to Valencia County, New Mexico ancestry, family history, and genealogy birth records, marriage records, death records, census records, and military records.


Valencia County, New Mexico
Map of the U.S. highlighting New Mexico
Location of New Mexico in the U.S.
Founded September 22, 1846
County Seat Los Lunas
Address Valencia County Courthouse
444 Luna Ave; PO Box 1119
Los Lunas, NM 87031-1119
Phone: 505.866.2073
Valencia County Website


County Information

Valencia County, New Mexico Record Dates

Beginning Dates for Major County Records
Birth Marriage Death Census Land Probate
1869 1850 1880 1870

County Courthouse

Valencia County Courthouse
444 Luna Ave; PO Box 1119
Los Lunas, NM 87031-1119
Phone: 505.866.2073 

County Clerk has marriage records from 1865 and probate records from 1900; District Court Clerk has divorce and court records.[1]


Parent County

  • Until 1821New 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 1821Mexico 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 - Valencia County was created based on an old Mexican government partido  as one of seven original New Mexico counties under Kearny Code of laws for the occupied Mexican territory.[2] Code named after General Stephen W. Kearny
  • 1848 - Valencia county 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.
Valencia and other counties in New Mexico Territory in 1852.


One of the 9 original counties formed in 1852 The county, which was formerly much larger in area, lost almost 81 percent of its territory on June 19, 1981 upon the creation of Cibola County, which occupies the westernmost portion of Valencia County's former area.

The county seat is Los Lunas.[3]

Boundary Changes

  • Interactive Formation Boundary Map of New Mexico - shows boundary changes for New Mexico Counties
  • New Mexico Historical Boundary Changes - list of all boundary changes by county provided by Newberry Library
  • 9 January 1852 - All New Mexico counties were redefined. Valencia county was extended west to the California border including land in present day Arizona and Nevada.[4] [5] [6] Residents living far from the county seat, probably didn't send many records to the county offices.
  • 24 February 1863 Arizona Territory created from the western half of New Mexico Territory.[7] Valencia County reduced in size to that portion still within New Mexico Territory.
  • 16 March 1903 - VALENCIA county lost land to creation of LEONARD WOOD county (now GUADALUPE county). [8]
  • 1 January 1905 - VALENCIA county lost land to the creation of TORRANCE county. [9]
  • 17 March 1981 Valencia county lost the westernmost four-fifths to the creation of Cibola County, New Mexico.[10]

For animated maps illustrating New Mexico County boundary changes, "Rotating Formation New Mexico County Boundary Maps" (1845-1981) may be viewed for free at the website. See also Previous Jurisdictions to Land in Arizona for further details.

Record Loss

There is no known history of courthouse disasters in this county.


Populated Places[11]

  • Belen
  • Rio Communities
  • Peralta
  • Bosque Farms
  • Los Lunas (county seat)
Census-designated places
  • Casa Colorada
  • Duran
  • El Cerro-Monterey Park
  • Jarales
  • Los Chavez
  • Los Trujillos-Gabaldon
  • Meadow Lake
  • Rio Communities North
  • Tome-Adelino
  • Valencia
Unincorporated communities
  • Bosque
  • Tome-Adelino

Neighboring Counties



Tombstone Transcriptions Online Tombstone Transcriptions in Print List of Cemeteries in the county Family History Library
NMGenWeb WorldCat Billion Graves
NMGenWeb Archives
Tombstone Project
NM Cemetery Project
Billion Graves
See New Mexico Cemeteries for more information.


Historical populations
Census Pop.  %±
1910 13,320
1920 13,795 3.6%
1930 16,186 17.3%
1940 20,245 25.1%
1950 22,481 11.0%
1960 39,085 73.9%
1970 40,539 3.7%
1980 61,115 50.8%
1990 45,235 −26.0%
2000 66,152 46.2%
2010 76,569 15.7%
Source: "".
State Census Records
Federal Census Records

Federal Censuses were taken for New Mexico starting in 1850. For links to Federal census indexes, see New Mexico Census.


Church records and the information they provide vary significantly depending on the denomination and the record keeper. They may contain information about members of the congregation, such as age, date of baptism, christening, or birth; marriage information and maiden names; and death date. For general information about New Mexico denominations, view the New Mexico Church Records wiki page. LDS Ward and Branch Records

Bluewater and Ramah Wards were originally within Valencia county. But in 1894, Ramah became part of in the new county of McKinley. Then in 1981, Bluewater became part of the new county of Cibola.



Land and property records can place an ancestor in a particular location, provide economic information, and reveal family relationships. Land records include: deeds, abstracts and indexes, mortgages, leases, grants and land patents.

See New Mexico Land and Property for additional information about early New Mexico land grants. After land was transferred to private ownership, subsequent transactions were usually recorded at the county courthouse and where records are currently housed.

Most of the land in New Mexico was originally obtained from the US federal government by a patent. These General Land Office Records are searchable online and most have free images of patents to download. The minimum information needed for a search is the state where the land is located and the name of the person receiving the patent. Surveys and Land Status Records can also be searched here.

Online Land Records

Local Histories

Local histories are available for Valencia County, New Mexico Genealogy. County histories may include biographies, church, school and government history, and military information. For more information about local histories, see the wiki page section New Mexico Local Histories.




Revolutionary War
Civil War
World War I
World War II



Online Probate Records

Since statehood in 1912, probate matters have been under the jurisdiction of probate courts in each county. Records of guardianship and adoption have usually been transferred to the district courts. In 1953 the district courts were given concurrent jurisdiction with the probate court over all probate matters in each county.

See the wiki page New Mexico Probate Records for information about how to find earlier probate records.

The Family History Library does not have copies of the New Mexico county probate records. They are available at each county courthouse. You can obtain copies by contacting the county clerk.

Content: Probate Records may give the decedent's date of death, names of his or her spouse, children, parents, siblings, in-laws, neighbors, associates, relatives, and their place of residence.

Record types: Wills, estates, guardianships, naturalizations, marriage, and adoption.


New Mexico tax records complement land records and can be used to supplement the years between censuses. There may be gaps of several years in the tax records of some counties. For more information, see the Wiki page New Mexico Taxation.

Vital Records


A wiki article describing an online collection is found at:

New Mexico, County Death Records (FamilySearch Historical Records)

Societies and Libraries

Valencia County Historical Society
104 North First Street
Belen 87002

Acoma Pueblo Historical Society
PO Box 309
Acoma Pueblo, 87034

Family History Centers

Family History Centers provide one-on-one assistance and free access to premium genealogical websites. In addition, many centers have free how-to genealogy classes. See Family History Center for more information. Search the online FHC directory for a nearby family history center.

Web Sites


  1. Handybook for Genealogists: United States of America, 10th ed. (Draper, Utah: Everton Pub., 2002), Valencia County, New Mexico page 475, At various libraries (WorldCat); FHL Book 973 D27e 2002.
  2. "Courts and Judicial Powers, Sec. 5” 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.
  3. accessed 09/29/2016
  4. N.M. Terr. Laws 1851, 1st assy., 2d sess. /p. 291
  5. 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.
  6. Original Counties of New Mexico Territory (map) at (accessed 9 August 2011).
  7. U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165
  8. N.M. Terr. Laws 1903, 35th assy., ch. 69/pp. 127-131
  9. N.M. Terr. Laws 1903, 35th assy., ch. 70/pp. 132-134
  10. N.M. Laws 1981, 35th reg. sess., ch. 24/pp. 76-80