Los Alamos County, NM Population

Overview

19,169

Total Population

41.5

Median age

48.83%

Female population %

104.8:100

Gender ratio (M:F)

55-59 years

Largest age group

54.6

Total dependency ratio

White

Largest racial group

3,509

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Los Alamos County's population is old compared to the rest of the country:

The median age in Los Alamos County is 41.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Los Alamos County's population under 18 was 22.10%, compared to the 22.51% nationwide.
Los Alamos County's elderly or the senior population (over 65 age) was 17.41% as compared to 16.04% nationwide.
Of the total population in Los Alamos County, 17.90% were under the age of 15, 16.42% aged 15 to 29, 48.27% aged 30 to 64, 14.87% aged 65 to 84, and 2.55% were 85 years of age and older.

There are 447 less females than males in Los Alamos County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 48.83% females and 51.17% males in Los Alamos County, NM.
The Los Alamos County, NM gender ratio is 104.8:100 i.e. 104.8 men to 100 women (1.048).
For male population, the largest age group is 30-34 years with a population of 896.
For the female population, the largest age group is 55-59 years with a population of 829.

Los Alamos County's population has become increasingly diverse:

Racial distribution of Los Alamos County population: 81.31% are White, 1.10% are Black or African American, 0.82% are American Indian and Alaska Native, 5.44% are Asian, 3.01% are some other race and 8.32% are multiracial.
Los Alamos County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 3,509 is Hispanic or Latino (of any race), and 15,66 (81.69% of the total population) is Non-Hispanic.
The largest racial group in Los Alamos County is White with a population of 15,587 (81.31% of the total population).

Los Alamos County's population has already reached its peak and is showing a trend of decline:

The peak population was 19,415 in the year 2020
From 2000 to 2010, Los Alamos County's population decreased by 253 (1.39%), as compared to the national growth of 9.63%.
From 2010 to 2020, Los Alamos County's population increased by 1,420 (7.89%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Los Alamos County's population was lowest in year 2001 at 17,650.