Los Alamos County, New Mexico

Los Alamos County is a county in New Mexico with an estimated population of 19,444 in 2023. 0 cities, towns and Census places in it are indexed here.

Largest places in Los Alamos County

About Los Alamos County

Los Alamos County is one of the counties of New Mexico. County governments in New Mexico handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.