Written and Fact-checked by Whereig Editors, Reviewed by Mukesh Kumar| Updated On: May 15, 2026
Map of Los Alamos County - Los Alamos County is a county located in the U.S. state of New Mexico. Los Alamos County Map showing cities, highways, important places and water bodies. Get Where is Los Alamos County located in the map, major cities in Los Alamos county, population, areas, and places of interest.
Map of Los Alamos County, New Mexico
About Los Alamos County Map, New Mexico: The map showing the county boundary, county seat, major cities, highways, water bodies and neighbouring counties.
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About Los Alamos County, New Mexico
Los Alamos County is a county located in the U.S. state of New Mexico. It's county seat is Los Alamos. As per 2020 census, the population of Los Alamos County is 19330 people and population density is square miles. According to the United States Census Bureau, the county has a total area of 109 sq mi (282 km2). Los Alamos County was established on 1949.
Los Alamos County Facts
| Continent | North America |
| Country | United States |
| State | New Mexico |
| County Seat | Los Alamos |
| Largest City/Town | Los Alamos |
| Established | 1949 |
| Total Area | 109 sq mi (282 sq km) |
| Land Area | 109 sq mi (282 sq km) |
| Water Area | 0.2 sq mi (0.5 sq km) |
| Population | 19,419 (Census 2020) |
| Population Density | 178 people per sq mi |
| Time Zone | Mountain Time Zone |
| Major Highways | State Road 4, State Road 502 |
| Major Rivers | Rio Grande nearby, Pueblo Canyon streams |
| Neighboring Counties | Rio Arriba County, Santa Fe County, Sandoval County |
| Famous For | Los Alamos National Laboratory, Manhattan Project history, scientific research, and mountain scenery |
| Top Attractions | Bradbury Science Museum, Bandelier National Monument, Valles Caldera, and Manhattan Project National Historical Park |
| Official Website | Official Website |
About Los Alamos County, New Mexico
Los Alamos County is located in north-central New Mexico on the Pajarito Plateau and was established in 1949. The county seat and largest community is Los Alamos, internationally known for scientific research and the development of the atomic bomb during the Manhattan Project. The county combines modern research facilities, mountain scenery, forests, and historic cultural sites.
Cities and Communities in Los Alamos County, New Mexico
| City/Community | Population (Census 2020) | Latitude & Longitude |
|---|---|---|
| Los Alamos (county seat) | 13,179 | 35.8800°N, 106.3031°W |
| White Rock (CDP) | 5,969 | 35.8275°N, 106.2111°W |
| Barranca Mesa | Residential community | 35.8925°N, 106.2867°W |
| North Community | Residential area | 35.8870°N, 106.2994°W |
| Pajarito Acres | Residential area | 35.8250°N, 106.2283°W |
Golf Courses in Los Alamos County, New Mexico
| Golf Course | Location | Latitude & Longitude |
|---|---|---|
| Los Alamos Golf Course | Los Alamos | 35.8775°N, 106.2886°W |
| Pajarito Mountain Recreation Golf Area | Los Alamos area | 35.8381°N, 106.3972°W |
Roads and Highways in Los Alamos County, New Mexico
Major highways connect the county to nearby cities and mountain recreation areas.
- State Road 4 - scenic highway connecting Los Alamos with Bandelier National Monument and Jemez Springs
- State Road 502 - primary route linking Los Alamos with Española and Interstate 25 near Santa Fe
Neighboring Counties of Los Alamos County
- Rio Arriba County (north)
- Santa Fe County (east)
- Sandoval County (west and south)
Top Attractions in Los Alamos County, New Mexico
The county offers a mix of scientific, historical, and natural attractions.
- Bradbury Science Museum - museum featuring exhibits on Los Alamos National Laboratory and nuclear science
- Bandelier National Monument - archaeological site with cliff dwellings and canyon hiking trails
- Valles Caldera National Preserve - volcanic caldera known for scenic meadows and wildlife viewing
- Manhattan Project National Historical Park - historic locations connected to the development of the atomic bomb
- Los Alamos Nature Center - educational center with trails and astronomy exhibits
- Pajarito Mountain Ski Area - local ski and outdoor recreation destination
- White Rock Overlook Park - scenic overlook with views of White Rock Canyon and the Rio Grande
- Fuller Lodge Historic Museum - historic lodge and museum tied to the Manhattan Project era
- Tsankawi Ruins Trail - ancient Puebloan archaeological site and hiking area
- Ashley Pond Park - community park hosting festivals and recreation events
- Jemez Mountain Scenic Drives - mountain routes featuring forests and volcanic landscapes
- Los Alamos Historical Museum - exhibits covering local science and community history
Distance from Los Alamos County to Nearby Cities
The following distances are measured by road (driving).
- Los Alamos to Santa Fe (Santa Fe County), New Mexico - 37 mi (60 km)
- Los Alamos to Española (Rio Arriba County), New Mexico - 20 mi (32 km)
- Los Alamos to Albuquerque (Bernalillo County), New Mexico - 99 mi (159 km)
- Los Alamos to Taos (Taos County), New Mexico - 72 mi (116 km)
- Los Alamos to Farmington (San Juan County), New Mexico - 180 mi (290 km)
- Los Alamos to Las Vegas (San Miguel County), New Mexico - 91 mi (146 km)
- Los Alamos to Gallup (McKinley County), New Mexico - 198 mi (319 km)
- Los Alamos to Roswell (Chaves County), New Mexico - 223 mi (359 km)
- Los Alamos to Durango (La Plata County), Colorado - 165 mi (266 km)
- Los Alamos to Colorado Springs (El Paso County), Colorado - 272 mi (438 km)
- Los Alamos to Phoenix (Maricopa County), Arizona - 458 mi (737 km)
- Los Alamos to El Paso (El Paso County), Texas - 324 mi (521 km)
FAQs about Los Alamos County
Los Alamos County is located in north-central New Mexico on the Pajarito Plateau.
The population of Los Alamos County was 19,419 according to the Census 2020.
Los Alamos County is known for Los Alamos National Laboratory, the Manhattan Project, and scientific research.
The county is primarily served by State Road 4 and State Road 502.
Yes, Los Alamos County has golf facilities including the Los Alamos Golf Course.
References
- QuickFacts - U.S. Census Bureau
- United States Census Bureau
- United States Geological Survey (USGS)
- National Geodetic Survey
- Official County Website
- Bernalillo County Map
- Catron County Map
- Chaves County Map
- Cibola County Map
- Colfax County Map
- Curry County Map
- De Baca County Map
- Doña Ana County Map
- Eddy County Map
- Grant County Map
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- Harding County Map
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- Los Alamos County Map
- Luna County Map
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