Los Alamos County
Ashley Pond in Los Alamos
Location within the U.S. state of New Mexico
New Mexico's location within the U.S.
|Largest community||Los Alamos|
|• Land||109 sq mi (280 km2)|
|• Water||0.09 sq mi (0.2 km2) 0.08%%|
| • Estimate |
|• Density||164/sq mi (63/km2)|
|Time zone||UTC−7 (Mountain)|
|• Summer (DST)||UTC−6 (MDT)|
Los Alamos County (English: The Poplars or Cottonwoods) is a county in the U.S. state of New Mexico. As of the 2010 census, the population was 17,950. The smallest county in area of this state was administered exclusively by the U.S. federal government during the Manhattan Project, but now has equal status to New Mexico's other counties. The county has two population centers known as CDPs: Los Alamos (the county seat) and White Rock.
The county is home to the Los Alamos National Laboratory.
Los Alamos County is noted for having the lowest level of child poverty of any county in the United States.
According to the U.S. Census Bureau, the county has a total area of 109 square miles (280 km2), of which 109 square miles (280 km2) is land and 0.09 square miles (0.23 km2) (0.08%) is water. It is the smallest county by area in New Mexico. There is no significant open water in the county. The county's highest point is located along its northern border, near the summit of Caballo Mountain, at 10,480 feet above sea level.
- Rio Arriba County – northeast
- Santa Fe County – east
- Sandoval County – south, west, north (and the Sandoval exclave to the east)
Pueblos with adjacent territories
National protected areas
|U.S. Decennial Census|
As of the 2000 census, there were 18,343 people, 7,497 households, and 5,337 families residing in the county. The population density was 168 people per square mile (65/km²). There were 7,937 housing units at an average density of 73 per square mile (28/km²). The racial makeup of the county was 90.26% White, 0.37% Black or African American, 0.58% Native American, 3.78% Asian, 0.03% Pacific Islander, 2.70% from other races, and 2.28% from two or more races. 11.75% of the population were Hispanic or Latino of any race.
There were 7,497 households out of which 33.50% had children under the age of 18 living with them, 62.70% were married couples living together, 5.70% had a female householder with no husband present, and 28.80% were non-families. 24.90% of all households were made up of individuals and 6.70% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.92.
In the county, the population was spread out with 25.80% under the age of 18, 4.40% from 18 to 24, 27.70% from 25 to 44, 30.00% from 45 to 64, and 12.10% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 101.40 males. For every 100 females age 18 and over, there were 99.70 males.
The median income for a household in the county was $78,993, and the median income for a family was $90,032. Males had a median income of $70,063 versus $40,246 for females. The per capita income for the county was $34,646. 2.90% of the population and 1.90% of families were below the poverty line. 1.80% of those under the age of 18 and 4.70% of those 65 and older were living below the poverty line.
As of the 2010 census, there were 17,950 people, 7,663 households, and 5,199 families residing in the county. The population density was 164.4 inhabitants per square mile (63.5/km2). There were 8,354 housing units at an average density of 76.5 per square mile (29.5/km2). The racial makeup of the county was 87.8% white, 6.0% Asian, 0.8% American Indian, 0.6% black or African American, 0.1% Pacific islander, 2.2% from other races, and 2.6% from two or more races. Those of Hispanic or Latino origin made up 14.7% of the population. In terms of ancestry, 18.9% were German, 16.5% were English, 13.2% were Irish, and 6.5% were American.
Of the 7,663 households, 31.3% had children under the age of 18 living with them, 58.1% were married couples living together, 6.4% had a female householder with no husband present, 32.2% were non-families, and 28.5% of all households were made up of individuals. The average household size was 2.33 and the average family size was 2.86. The median age was 44.3 years.
The median income for a household in the county was $103,643 and the median income for a family was $118,993. Males had a median income of $93,040 versus $51,753 for females. The per capita income for the county was $49,474. About 1.4% of families and 2.4% of the population were below the poverty line, including 1.8% of those under age 18 and 2.4% of those age 65 or over.
The County council was created by the Los Alamos County Charter. The Council consists of seven members elected at large for four-year, staggered terms. Each year the party in control of the council selects the new chair.
|County councilor, Chair||David Izraelevitz||Democrat|
|County councilor, Vice Chair||Susan O'Leary||Democrat|
|County councilor, At-large||Morris Pongratz||Republican|
|County councilor, At–large||Chris Chandler||Democrat|
|County councilor, At–large||Antonio Maggiore||Democrat|
|County councilor, At–large||Rick Reiss||Republican|
|County councilor, At–large||Pete Sheehey||Democrat|
|County Assessor||Kenneth Milder||Democrat|
|County Clerk||Naomi Maestas||Republican|
|Municipal Judge||Alan S. Kirk||Republican|
Quality of life
In a study conducted by American City Business Journals in 2004, Los Alamos County topped the list as the best place to live in America in terms of quality of life. This was attributed to the high levels of job stability, income and education of Los Alamos residents, many of whom are employed as scientists and engineers at the Los Alamos National Laboratory. The county has one of the highest number of PhDs per capita and the 2011 median household income of $110,204 per year is the second highest among all the counties in the US. In per capita income, Los Alamos County ranks 1st in New Mexico and 7th in the United States, and has the second-lowest level of poverty in the United States, and the lowest level of child poverty. Other factors contributing to Los Alamos's high quality-of-life index were the access to affordable housing and short commuting times.
Formerly solidly Republican, Los Alamos County has voted Democratic in the three most recent presidential elections. It has seen high percentages of third-party votes in years with major third-party candidates, such as with John B. Anderson in 1980, Ross Perot in 1992 and 1996, and Gary Johnson in 2012 and 2016. Los Alamos County was Gary Johnson's best county in the nation during the 2016 election.
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- County website
- Los Alamos County at Curlie
- MSNBC: Where's the best place to live in America
- Los Alamos Monitor newspaper
- Los Alamos County Councilors