Los Alamos Flag

Los Alamos

County Seat:
No
Area (mi²):
0.904
State:
California

Los Alamos is a CDP located in Santa Barbara County, California. Los Alamos has a 2026 population of 654. Los Alamos is currently declining at a rate of -10.66% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in Los Alamos is $79,167 with a poverty rate of 2.75%. The median age in Los Alamos is 58.3 years: 45.6 years for males, and 63.8 years for females. For every 100 females there are 78.4 males.

654
Total Population
724
Density (mi²)
-78 -10.66%
Growth

Los Alamos Population

Los Alamos Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026654-78-10.66%
2025732-77-9.52%

Median Age

Overall: 58.3 years
Female: 63.8 years
Male: 45.6 years

Los Alamos Adults

There are 953 adults, (447 of whom are seniors) in Los Alamos.

Sex Ratio

Female: 652 (56.1%)
Male: 511 (43.9%)

Demographics

The racial composition of Los Alamos includes 95.18% White, and smaller percentages for Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,10795.18%
Two or more races413.53%
Asian110.95%
Other race40.34%
Race
Population ↓
Percentage (of total)
Two or more races413.53%
White60.52%
Other race40.34%
Race
Population ↓
Percentage (of total)
White1,10194.67%
Asian110.95%

Los Alamos Marital Status

Economics and Income Statistics

Los Alamos ' average per capita income is $0. Household income levels show a median of $79,167. The poverty rate stands at 2.75%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$140,526-
Families$91,641$108,349
Households$79,167$92,716
Non Families$73,250$63,987

$0

Average Income

$79,167

Median Household Income

2.75%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)