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Sandoval County, New Mexico facts for kids

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Sandoval County
Sandoval County Courthouse in Bernalillo
Sandoval County Courthouse in Bernalillo
Official seal of Sandoval County
Map of New Mexico highlighting Sandoval County
Location within the U.S. state of New Mexico
Map of the United States highlighting New Mexico
New Mexico's location within the U.S.
Country  United States
State  New Mexico
Founded 1903
Named for Sandoval family
Seat Bernalillo
Largest city Rio Rancho
 • Total 3,716 sq mi (9,620 km2)
 • Land 3,711 sq mi (9,610 km2)
 • Water 5.3 sq mi (14 km2)  0.1%%
 • Estimate 
 • Density 35/sq mi (14/km2)
Time zone UTC−7 (Mountain)
 • Summer (DST) UTC−6 (MDT)
Congressional districts 1st, 3rd

Sandoval County is located in the U.S. state of New Mexico. As of the 2010 census, the population was 131,561, making it the fourth-most populous county in New Mexico. The county seat is Bernalillo.

Sandoval County is part of the Albuquerque metropolitan area.


According to the U.S. Census Bureau, the county has a total area of 3,716 square miles (9,620 km2), of which 3,711 square miles (9,610 km2) is land and 5.3 square miles (14 km2) (0.1%) is water. The highest point in the county is the summit of Redondo Peak, at 11,254 feet (3,430 m).

A relatively small portion of the county exists as a geographically separate exclave between Los Alamos County and Santa Fe County. This came about when Los Alamos County was created; the land that became the exclave would have been part of Los Alamos but was excluded owing to its sacred status among the local Indians. Rather than be ceded to neighboring Santa Fe (or Los Alamos) it has remained part of Sandoval.

Adjacent counties

Indian reservations

Northside of Jemez Pueblo, New Mexico, 1915
Northside of Jemez Pueblo, New Mexico, 1915

Sandoval County has 12 Indian reservations and two joint-use areas lying within its borders. This is the second highest number of reservations of any county in the United States (after San Diego County, California, which has 18 reservations.) Riverside County, California also has 12 reservations, but no joint-use areas.

National protected areas


Historical population
Census Pop.
1910 8,579
1920 8,863 3.3%
1930 11,144 25.7%
1940 13,898 24.7%
1950 12,438 −10.5%
1960 14,201 14.2%
1970 17,492 23.2%
1980 34,799 98.9%
1990 63,319 82.0%
2000 89,908 42.0%
2010 131,561 46.3%
2019 (est.) 146,748 11.5%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2016

2010 census

As of the 2010 census, there were 131,561 people, 47,602 households, and 34,548 families living in the county. The population density was 35.5 inhabitants per square mile (13.7/km2). There were 52,287 housing units at an average density of 14.1 per square mile (5.4/km2). The racial makeup of the county was 68.0% white, 12.9% American Indian, 2.1% black or African American, 1.5% Asian, 0.1% Pacific islander, 11.5% from other races, and 3.9% from two or more races. Those of Hispanic or Latino origin made up 35.1% of the population. In terms of ancestry, 13.2% were German, 9.3% were Irish, 8.7% were English, and 3.3% were American.

Of the 47,602 households, 37.6% had children under the age of 18 living with them, 53.9% were married couples living together, 12.5% had a female householder with no husband present, 27.4% were non-families, and 22.0% of all households were made up of individuals. The average household size was 2.75 and the average family size was 3.22. The median age was 37.9 years.

The median income for a household in the county was $57,158 and the median income for a family was $65,906. Males had a median income of $48,967 versus $35,101 for females. The per capita income for the county was $25,979. About 8.3% of families and 11.4% of the population were below the poverty line, including 14.0% of those under age 18 and 10.8% of those age 65 or over.





Census-designated places

Unincorporated community

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