Los Alamos County, NM demographics:
population, income, and more

Total population
19,435
0.3% year-over-year change
Median household income
$147,139/yr
2.8% year-over-year change
Housing units
8,713
0.6% year-over-year change

Los Alamos County population

How many people live in Los Alamos County

Los Alamos County is home to 19,435 residents, according to the most recent Census data. Gender-wise, 51.9% of Los Alamos County locals are male, and 48.1% are female.

Total population
19,435
0.3% year-over-year change
Gender ratio
Male
51.9%
10,083
Female
48.1%
9,352
Value Percent YoY change
Male 10,083 51.9% 0.9%
Female 9,352 48.1% -0.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Los Alamos County is 39, with the population distributed as follows: about 17.7% are children under 15, then 10.1% are in the 15 to 24 age group. Adults between 25 and 44 make up 29.3% of the population, while another 24.6% fall into the 45 to 64 bracket. Finally, around 18.4% are 65 or older.

Median age
39.3
Age breakdown
Under 15
17.7%
15 to 24
10.1%
25 to 44
29.3%
45 to 64
24.6%
Over 65
18.4%
Value Percent YoY change
Under 15 3,432 17.7% 1.5%
15 to 24 1,963 10.1% 3.1%
25 to 44 5,691 29.3% 3.5%
45 to 64 4,776 24.6% -5.8%
Over 65 3,573 18.4% 1.5%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Los Alamos County, 87.7% of the population are US-born citizens, while 8.7% have gained naturalized citizenship. At the same time, 3.7% of residents are non-citizens. As for race, 74.7% of locals are Caucasian, 0.9% are African American and 5% have Asian roots. Another 1.3% are Indigenous American, 0.1% are Pacific Islanders, while 3.5% identify as another race. There’s also a share of 14.6% that includes residents with two or more races.

Citizenship
U.S.-born citizens
87.7%
Non-U.S.-born citizens
8.7%
Non-citizens
3.7%
Value Percent YoY change
U.S.-born citizens 17,039 87.7% 1.0%
Non-U.S.-born citizens 1,683 8.7% 3.9%
Non-citizens 713 3.7% -19.0%
Racial breakdown
White
74.7%
Black or African American
0.9%
American Indian and Alaska Native
1.3%
Asian
5%
Native Hawaiian and other Pacific Islander
0.1%
Two or more races
14.6%
Other
3.5%
Value Percent
White 14,526 74.7%
Black or African American 168 0.9%
American Indian and Alaska Native 253 1.3%
Asian 962 5%
Native Hawaiian and other Pacific Islander 16 0.1%
Two or more races 2,834 14.6%
Other 676 3.5%

Households in Los Alamos County

A peek inside Los Alamos County households

Los Alamos County has 8,247 households, with an average of 2 members in each. Of these, 63% are families, while the remaining 37% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
8,247
0.4% year-over-year change
Average people per household
2
Non-family households
3,055
Family households
5,192
Value Percent YoY change
Non-family households 3,055 37% 2.3%
Family households 5,192 63% -0.6%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Los Alamos County

The housing landscape of Los Alamos County

Los Alamos County's housing consists of 8,713 units, with 62.3% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 9.5% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 5.1% of the housing landscape.

Housing units
8,713
0.6% year-over-year change
Housing types
Value Percent
1 unit, detached 5,425 62.3%
1 unit, attached 824 9.5%
2 units 137 1.6%
3 or 4 units 457 5.2%
5 to 9 units 458 5.3%
10 to 19 units 281 3.2%
20 to 49 units 543 6.2%
50 or more units 140 1.6%
Mobile home 448 5.1%
Homes built since 2020
333
52.8% year-over-year change

The age of buildings in Los Alamos County

In Los Alamos County, the median construction year is 1974. About 0.1% of homes were built before the 1940s, with another 11% going up by 1949. Most development happened in the second half of the 20th century. Then, 11% of homes were added from 2000 to 2009, 4.4% between 2010 and 2019, and 3.8% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 11 0.1% N/A
Built between 1940 and 1949 957 11% 8.1%
Built between 1950 and 1959 1,189 13.6% -10.1%
Built between 1960 and 1969 1,362 15.6% 0.7%
Built between 1970 and 1979 1,894 21.7% 7.9%
Built between 1980 and 1989 931 10.7% -7.5%
Built between 1990 and 1999 696 8% -13.4%
Built between 2000 and 2009 961 11% -0.7%
Built between 2010 and 2019 379 4.4% 8.9%
Built in 2020 or later 333 3.8% 52.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Los Alamos County occupancy rates

Out of the 8,247 occupied housing units in Los Alamos County, 74.8% are owner-occupied, while 25.2% are lived in by tenants. Meanwhile, 5.3% of all homes on the local market sit vacant.

Occupied housing units
8,247
0.4% year-over-year change
Occupancy breakdown
Renter occupied
2,076
Owner occupied
6,171
Value Percent YoY
change
Renter occupied 2,076 25.2% -0.7%
Owner occupied 6,171 74.8% 0.8%
Unoccupied housing units
5.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Los Alamos County housing costs

Housing costs in Los Alamos County come to a median of $1,561 per month, while tenants specifically pay a median gross rent of $1,375.

Median housing costs per month
$1,561/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Los Alamos County
$1,375/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Los Alamos County

Los Alamos County education at a glance

About 10.8% of the population in Los Alamos County went to high school, while 14.8% pursued college studies. Another 6.9% earned an associate degree and 26.1% hold a bachelor’s. Meanwhile, 40.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 68 0.4% -39.3%
High school diploma 1,639 10.8% -13.7%
College diploma 2,246 14.8% -10.8%
Associate degree 1,041 6.9% 32.6%
Bachelor's degree 3,961 26.1% 3.8%
Graduate degree 6,202 40.9% 1.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Los Alamos County

How much people earn in Los Alamos County

The average annual household income in Los Alamos County was $170,885 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.1% change from the previous year. At the same time, the median income stood at $147,139, reflecting a +2.8% shift over the same period.

Average household income in Los Alamos County
$170,885/year
2.1% year-over-year change
Median household income in Los Alamos County
$147,139/year
2.8% year-over-year change

Los Alamos County income by age

In Los Alamos County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $135,433. Those with someone between 45 and 64 in charge, often well established professionally, earn $173,106 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $68,250, while those led by someone over 65, many of whom may be retired, have about $137,143 in earnings. Overall, 96.6% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $68,250 N/A
25 - 44 $135,433 8.1%
45 - 64 $173,106 6.8%
Over 65 $137,143 -6.1%
Above poverty level
18,460
Below poverty level
654
Value Percent YoY
change
Above poverty level 18,460 96.6% -0.3%
Below poverty level 654 3.4% 26.0%

Employment in Los Alamos County

Workforce and job types in Los Alamos County

The job market in Los Alamos County is powered by 10,536 working residents, spread across a range of industries and roles. 92.3% of the working population are employed in professional or administrative positions, while 7.7% are in hands-on or service-based jobs. Also, 5.2% run their own businesses, 36.9% are employed by private companies, and 45.7% work in the public sector.

Workforce demographics

Working population
10,536
1.8% year-over-year change
White collar
9,721
Blue collar
815
Value Percent YoY change
White collar 9,721 92.3% 1.2%
Blue collar 815 7.7% 10.3%
Employer type
Self employees
5.2%
Private companies
36.9%
Governmental workers
45.7%
Not for profit companies
12.2%
Value Percent YoY change
Self employees 548 5.2% -24.0%
Private companies 3,890 36.9% 10.1%
Governmental workers 4,812 45.7% 1.9%
Not for profit companies 1,286 12.2% -6.2%
Unemployment rate
0.6%
-71.0% year-over-year change

Available workforce

The unemployment rate in Los Alamos County stands at 0.6%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Los Alamos County

How people get around in Los Alamos County

In Los Alamos County, the average commute time is 15 minutes. Commuting methods vary: 79% of residents travel by personal vehicle and 2.2% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Commute time
15 min
Means of transportation
Value Percent YoY change
Car 8,307 79% 1.0%
Taxicab 1 0% 0.0%
Bus or trolleybus 128 1.2% -20.5%
Motorcycle 76 0.7% -31.5%
Bicycle 105 1% -11.0%
Walk 236 2.2% 10.8%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Los Alamos County by zipcode?

Zipcode Population Number of households Median income Average income
87544 13,598 6,163 $138,583 $162,344

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FAQs about Los Alamos County demographics 

What is the total population of Los Alamos County?

Los Alamos County has a total population of 19,435 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.3% compared to a year ago.

What is the gender ratio in Los Alamos County?

The gender ratio in Los Alamos County is as follows:
  • 51.9% males (10,083 residents)
  • 48.1% females (9,352 residents)

What is the median age in Los Alamos County?

The median age in Los Alamos County is 39.3.

What is the age distribution of the population in Los Alamos County?

The age distribution in Los Alamos County is as follows:
  • Under 15: 17.7% (3,432 residents)
  • Ages 15-24: 10.1% (1,963 residents)
  • Ages 25-44: 29.3% (5,691 residents)
  • Ages 45-64: 24.6% (4,776 residents)
  • Over 65: 18.4% (3,573 residents)

What is the racial and ethnic makeup of Los Alamos County?

The racial and ethnic makeup of Los Alamos County is as follows:
  • White: 74.7% (14,526 residents)
  • Black or African American: 0.9% (168 residents)
  • American Indian and Alaska Native: 1.3% (253 residents)
  • Asian: 5% (962 residents)
  • Native Hawaiian and Other Pacific Islander: 0.1% (16 residents)
  • Two or More Races: 14.6% (2,834 residents)
  • Other: 3.5% (676 residents)

What percentage of the population in Los Alamos County are U.S.-born citizens?

U.S.-born citizens represent 87.7% of the population in Los Alamos County.

How many housing units are there in Los Alamos County?

There are 8,713 housing units in Los Alamos County, reflecting a +0.6% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Los Alamos County and what is the average household size?

Los Alamos County has a total of 8,247 households, with an average of 2 people in each.

What is the median household income in Los Alamos County?

Los Alamos County has a median household income of $147,139, representing a +2.8% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Los Alamos County?

The employment rate is 99.4% in Los Alamos County, with a workforce of 10,536 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 92.3% (9,721 residents)
  • Blue-collar workers: 7.7% (815 residents)

Places of employment:
  • Self-employed: 5.2% (548 residents)
  • Private companies: 36.9% (3,890 residents)
  • Governmental workers: 45.7% (4,812 residents)
  • Not-for-profit companies: 12.2% (1,286 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025