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Market insights · New Mexico

Los Alamos County, NM: growth, migration and housing

Los Alamos County has 19,407 residents, down 0.0% since 2020 (-0.1% in the last year). In 2022–2023, 820 households moved in and 860 moved out (-40 net), while a net $20.1M of income left. Median household income is $147,139, the median home $495,800 and median rent $1,375 a month.

Population (2025)19,407
5-year growth-0.0%
1-year growth-0.1%
Net households moving in-40
Per 1,000 residents-2.1
Net income moving in-$20.1M
Median household income$147,139
Median home value$495,800
Median rent$1,375/mo
Rent as share of income11%

In New Mexico: 11th of 33 counties for 5-year population growth · 21st of 32 counties for net in-migration (per resident) · 1st of 32 counties for median household income · 1st of 33 counties for median home value.

Where new residents came from

Top counties by households (tax returns) moving to Los Alamos County, 2022–2023 (IRS).

FromHouseholds (tax returns)Their income (AGI)
Santa Fe County, NM98$11.3M
Bernalillo County, NM61$4.9M
Rio Arriba County, NM27$1.6M
Los Angeles County, CA21$1.3M

Where leavers went

Top counties by households leaving Los Alamos County, 2022–2023 (IRS).

ToHouseholds (tax returns)Their income (AGI)
Santa Fe County, NM128$11.7M
Bernalillo County, NM74$6.9M
Sandoval County, NM43$4.6M
Rio Arriba County, NM38$3.8M

BizyFi in Los Alamos County

No companies in the BizyFi directory are based here yet. Search them on the company map (company names with a free account), or browse New Mexico companies.

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Sources: U.S. Census Bureau population estimates (vintage 2025), American Community Survey 5-year (2024), and IRS Statistics of Income county-to-county migration data (2022–2023). Migration counts are tax returns (roughly households) moving between U.S. counties; the IRS suppresses very small flows. Growth rates, per-1,000 figures, rent share and state ranks are BizyFi calculations. Data updated 2026-10-17. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.