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Los Alamos County, NM
2 cities and towns and 1 ZIP code in Los Alamos County, New Mexico.
Population
19,435
Land area
109sq mi
People per sq mi
178
ZIP codes
1
Cities and towns in Los Alamos County
Los Alamos County at a glance
- Los Alamos County is about 10 times as dense as New Mexico as a whole.
- The median household income is $147,139, about 2.3 times the New Mexico median of $64,059.
- A typical owner-occupied home is valued at $495,800 (100% above New Mexico) and median rent is $1,375 a month.
- Its largest cities are Los Alamos (13,317) and White Rock (5,716).
Local data for Los Alamos County, NM
Counts from official public data
Housing and community stats
Los Alamos County, NM, American Community Survey 2020-2024
Median household income
$147,139
Poverty rate
3.5%
Median home value
$495,800
Prices -2.9% in a year
Median rent
$1,375/mo
Homeownership
74.8%
Bachelor's or higher
69.7%
Median age
39.3
Average commute
14.7 min
Largest reported origins and ancestries: German Americans (3,568), Irish Americans (2,345), Mexican Americans (1,563).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.2%
Aug 2026, +0.4 pts in a year
Average annual pay
$118,036
22,520 jobs, 2025
Income per person
$98,378
BEA, 2024
Federal spending
$5.66B
FY 2026, $291,466 per person
PPP loans
$2.11M
52 loans, 293 jobs reported
Campaign donations
$85.94K
Itemized, 2026 cycle
How people get to work
Los Alamos County, NM, workers 16 and older. American Community Survey 5-year estimates
- Drove alone71.8%
- Carpooled7.2%
- Public transit1.2%
- Walked2.2%
- Bicycle1.0%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home15.6%
Average one-way commute: 14.7 minutes for people who do not work from home.
Environment and hazard risk
Los Alamos County, NM, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
149
Most often drought
Flood insurance policies
19
0.3% of homes, county
July high / Jan low
83° / 21°F
17.5 inches of rain a year
Hazards, floods and storm historyCheck a flood zone3 historic places
Health statistics
Share of adults in Los Alamos County, NM, CDC PLACES estimates
Obesity
25.4%
U.S. 33.3% -7.9 pts
Diabetes
8.0%
U.S. 12.1% -4.1 pts
Smoking
7.1%
U.S. 12.8% -5.7 pts
Uninsured (18-64)
5.7%
U.S. 11.1% -5.4 pts
Cities, towns and ZIP codes in Los Alamos County
Population shown
Frequently asked questions
- What is the largest city in Los Alamos County, NM?
- Los Alamos is the largest city or town in Los Alamos County, with about 13,317 residents.
- How many ZIP codes are in Los Alamos County?
- Los Alamos County includes 1 ZIP Code Tabulation Areas, including 87547.
- What is the population of Los Alamos County, NM?
- About 19,435 people live in Los Alamos County, based on American Community Survey 5-year estimates.
- What counties border Los Alamos County?
- Los Alamos County borders Santa Fe County, Sandoval County, Rio Arriba County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023