Los Alamos County, New Mexico: Realigning Affluent Suburb county. In 2024, voted D+30%. Republican peak: R+41 in 1984.
Key facts
- 2024 presidential margin
- D+30MIT Election Lab
- Political typology
- Realigning Affluent SuburbAkashic typology
- Population
- 19,4352024 5-year
- Median household income
- $147,1392024 5-year
- White (non-Hispanic)
- 74.7%2024 5-year
- Black
- 0.9%2024 5-year
- Hispanic / Latino
- 18.0%2024 5-year
- Peak Democratic margin
- D+33 in 1964MIT Election Lab
- Peak Republican margin
- R+41 in 1984MIT Election Lab
- Most similar
- Mono County, CA · similarity 0.97
2024 results by precinct
2024 precinct map of Los Alamos CountyPrecinct-level 2024 presidential results for Los Alamos County, with each precinct boundary colored by Democratic-vs-Republican margin.
—
Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | No data |
| 1880 | No data |
| 1884 | No data |
| 1888 | No data |
| 1892 | No data |
| 1896 | No data |
| 1900 | No data |
| 1904 | No data |
| 1908 | No data |
| 1912 | No data |
| 1916 | No data |
| 1920 | No data |
| 1924 | No data |
| 1928 | No data |
| 1932 | No data |
| 1936 | No data |
| 1940 | No data |
| 1944 | No data |
| 1948 | No data |
| 1952 | +1.2% |
| 1956 | −4.1% |
| 1960 | +2.2% |
| 1964 | +32.9% |
| 1968 | −14.3% |
| 1972 | −34.2% |
| 1976 | −29.8% |
| 1980 | −33.0% |
| 1984 | −40.7% |
| 1988 | −33.0% |
| 1992 | −4.0% |
| 1996 | −10.2% |
| 2000 | −14.4% |
| 2004 | −5.4% |
| 2008 | +6.9% |
| 2012 | +3.7% |
| 2016 | +20.2% |
| 2020 | +26.6% |
| 2024 | +30.2% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 7,726 | 4,047 | 12,187 | ||
| D | 7,554 | 4,278 | 12,293 | ||
| D | 5,562 | 3,359 | 10,885 | ||
| D | 5,191 | 4,796 | 10,654 | ||
| D | 5,824 | 5,064 | 11,069 | ||
| R | 5,206 | 5,810 | 11,197 | ||
| R | 4,149 | 5,623 | 10,218 | ||
| R | 3,983 | 4,999 | 9,932 | ||
| R | 3,897 | 4,320 | 10,642 | ||
| R | 3,275 | 6,622 | 10,153 | ||
| R | 2,859 | 6,882 | 9,888 | ||
| R | 2,368 | 5,460 | 9,383 | ||
| R | 2,890 | 5,383 | 8,355 | ||
| R | 2,435 | 5,039 | 7,624 | ||
| R | 2,552 | 3,447 | 6,276 | ||
| D | 3,767 | 1,895 | 5,688 | ||
| D | 2,692 | 2,574 | 5,283 | ||
| R | 2,214 | 2,406 | 4,629 | ||
| D | 2,281 | 2,226 | 4,515 | ||
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Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
22.5%
German
18.4%
Irish
12.1%
American
4.2%
Italian
4.1%
Scottish
3.3%
French
2.8%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 39.3 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$147,139
Los Alamos County ranks in the top 0.5% of US counties.
Los Alamos County$147,139
New Mexico$64,059
United States$80,734
Los Alamos County ranks in the top 0.5% of US counties by median household income.
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
3.5%
Child poverty is below the national average.
Children under 185.2%
Working age (18–64)3.0%
Seniors (65+)4.1%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
85.4%
speak English only
Spanish5.9%
Asian & Pacific Islander4.7%
Other Indo-European3.6%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 45.1% of residents not counted as adherents by any reporting body.
Home to Los Alamos National Laboratory, this small county posts one of New Mexico's widest Democratic margins, driven by a workforce of scientists and engineers that skews heavily toward advanced degrees.
Once reliably Republican — a margin of forty-one points in 1984 at its widest — Los Alamos County has trended Democratic. Between 2020 and 2024 the county moved four points toward the Democratic candidate; the 2024 margin was thirty points.
A median household income of $147,139 — among the higher at this geographic scale — and a population of 19,435 describe the county. The county's voting pattern over the last decade is most similar to that of Mono County and Rockdale County.
Most similar counties
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Los Alamos County, New Mexico. Akashic. https://akashic.app/county/35028/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions
How did Los Alamos County, New Mexico vote in 2024?
In 2024, Los Alamos County, New Mexico voted Democratic by 30.2 points (D+30), carried by the Democratic candidate. Out of 12,187 votes cast, 7,726 went Democratic and 4,047 went Republican.
What is Los Alamos County, New Mexico's political typology?
Akashic places Los Alamos County, New Mexico in the "Realigning Affluent Suburb" typology — College-educated, affluent suburbs — the one bloc moving toward the Democratic Party. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the county has voted Democratic 8 times, Republican 11 times, and other 0 times.
When did Los Alamos County, New Mexico last vote Republican?
The most recent presidential election in which Los Alamos County, New Mexico voted Republican was 2004.
How many people live in Los Alamos County, New Mexico?
Los Alamos County, New Mexico has a population of 19,435 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Los Alamos County, New Mexico?
Median household income in Los Alamos County, New Mexico is $147,139 — above the national median of $80,734. The New Mexico state median is $64,059.
What is the political history of Los Alamos County, New Mexico?
Akashic tracks 38 presidential elections in Los Alamos County, New Mexico from 1876 to 2024. Of those, 8 went Democratic and 11 went Republican. The county's typology — "Realigning Affluent Suburb" — captures where that record, its demographics, and its recent swing place it among American communities.