- Lead
- 3,679
- Total
- 12,187
- vs nation
- D+31.7
- Turnout
- 85.3%
Los Alamos County, NM
President margin by year
Place winner margin
President results by year
2024 turnout 85.3% of 14,444 citizens 18+
- Lead
- 3,276
- Total
- 12,293
- vs nation
- D+22.2
- Turnout
- 88.2%
- Lead
- 2,203
- Total
- 10,885
- vs nation
- D+18.1
- Turnout
- 84.0%
- Lead
- 395
- Total
- 10,654
- vs nation
- R+0.1
- Turnout
- —
- Lead
- 760
- Total
- 11,069
- vs nation
- R+0.4
- Turnout
- —
- Lead
- 604
- Total
- 11,197
- vs nation
- R+2.9
- Turnout
- —
- Lead
- 1,474
- Total
- 10,218
- vs nation
- R+14.9
- Turnout
- —
- Lead
- 1,016
- Total
- 9,932
- vs nation
- R+18.8
- Turnout
- —
Key facts
- 2024 presidential margin
- D+30.2MIT Election Lab
- Population
- 19,4352024 5-year
- Median household income
- $147,1392024 5-year
- White (non-Hispanic)
- 69.8%2024 5-year
- Black
- 0.9%2024 5-year
- Hispanic / Latino
- 18.0%2024 5-year
- Peak Democratic margin
- D+32.9 in 1964MIT Election Lab
- Peak Republican margin
- R+40.7 in 1984MIT Election Lab
- Most similar
- Teton County, WY · twin score 93.3
Midterm durability
Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.
- 2024 total turnout
- 85.3%12,322 participants ÷ 14,444 CVAP
- 2020→2022 drop-off
- +16.7 ptsVolatile
- Drop-off versus state
- +1.4 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 68.6%–73.1%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 10,987 | 13,077 | 84.0% | A/A |
| 2018 · Midterm | 10,337 | 13,549 | 76.3% | A/A |
| 2020 · Presidential | 12,401 | 14,063 | 88.2% | A/A |
| 2022 · Midterm | 10,238 | 14,325 | 71.5% | A/A |
| 2024 · Presidential | 12,322 | 14,444 | 85.3% | A/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 293/111.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 297/138.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 301/2.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 306/183.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-v1:observed:native; allocation share 0.0%; series 311/228.
Precinct data
Results by precinct
40 precincts · 12,016 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -000022000022 | 469 | 217 | 29 | 715 | 65.6% | 30.3% | D+35.2 |
|---|---|---|---|---|---|---|---|
| Precinct -000013000013 | 377 | 260 | 27 | 664 | 56.8% | 39.2% | D+17.6 |
| Precinct -000023000023 | 431 | 224 | 8 | 663 | 65.0% | 33.8% | D+31.2 |
| Precinct -000017000017 | 453 | 181 | 25 | 659 | 68.7% | 27.5% | D+41.3 |
| Precinct -000009000009 | 398 | 231 | 23 | 652 | 61.0% | 35.4% | D+25.6 |
| Precinct -000016000016 | 428 | 216 | 0 | 644 | 66.5% | 33.5% | D+32.9 |
| Precinct -000001000001 | 407 | 229 | 7 | 643 | 63.3% | 35.6% | D+27.7 |
| Precinct -000014000014 | 414 | 183 | 0 | 597 | 69.3% | 30.7% | D+38.7 |
| Precinct -000007000007 | 327 | 223 | 16 | 566 | 57.8% | 39.4% | D+18.4 |
| Precinct -000002000002 | 315 | 240 | 10 | 565 | 55.8% | 42.5% | D+13.3 |
| Precinct -000008000008 | 353 | 192 | 20 | 565 | 62.5% | 34.0% | D+28.5 |
| Precinct -000011000011 | 345 | 188 | 9 | 542 | 63.7% | 34.7% | D+29.0 |
| Precinct -000015000015 | 366 | 152 | 10 | 528 | 69.3% | 28.8% | D+40.5 |
| Precinct -000021000021 | 347 | 151 | 0 | 498 | 69.7% | 30.3% | D+39.4 |
| Precinct -000003000003 | 304 | 188 | 0 | 492 | 61.8% | 38.2% | D+23.6 |
| Precinct -000010000010 | 334 | 120 | 20 | 474 | 70.5% | 25.3% | D+45.1 |
| Precinct -000019000019 | 331 | 130 | 9 | 470 | 70.4% | 27.7% | D+42.8 |
| Precinct -000004000004 | 275 | 171 | 6 | 452 | 60.8% | 37.8% | D+23.0 |
| Precinct -000005000005 | 242 | 167 | 12 | 421 | 57.5% | 39.7% | D+17.8 |
| Precinct -000020000020 | 247 | 93 | 0 | 340 | 72.6% | 27.4% | D+45.3 |
| Precinct -000018000018 | 238 | 94 | 6 | 338 | 70.4% | 27.8% | D+42.6 |
| Precinct -000006000006 | 195 | 113 | 6 | 314 | 62.1% | 36.0% | D+26.1 |
| Precinct -000012000012 | 130 | 84 | 0 | 214 | 60.7% | 39.3% | D+21.5 |
| Los Alamos County Precinct 135_350281 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1035_3502810 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1135_3502811 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1235_3502812 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1335_3502813 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1435_3502814 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1535_3502815 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1635_3502816 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 1735_3502817 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 235_350282 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 335_350283 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 435_350284 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 535_350285 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 635_350286 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 735_350287 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 835_350288 | 0 | 0 | 0 | 0 | — | — | No votes |
| Los Alamos County Precinct 935_350289 | 0 | 0 | 0 | 0 | — | — | No votes |
Presidential margin, 1952–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 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% |
U.S. House
Each row shows U.S. House votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2024 | D | 64.2%7,664 | 35.8%4,282 | 11,946 |
| 2020 | D | 58.4%7,062 | 41.6%5,028 | 12,090 |
U.S. Senate
Each row shows U.S. Senate votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Governor
Each row shows Governor votes counted inside this Place. “Vote lead” is the local lead here, not necessarily the winner of the full contest.
Registered voters
By party of registration, over time
Registration leans Democratic; the presidential vote runs 17 points more Republican.
16,378 registered voters · 2026
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−85 net domestic migration · 2025
Net −270 over 2011–2025 · gain loss
Arrivals reported $89,489 in average income, against $145,683 for residents who stayed — 39% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+35.2 on average — 5.0 points more Democratic-leaning than Los Alamos County, NM itself (D+30.2).
Where arrivals came from lean of each source
- Santa Fe County, NM98D+48.9
- Bernalillo County, NM61D+21.0
- Rio Arriba County, NM27D+19.4
- Los Angeles County, CA21D+32.9
Where departures went households, 2022–23
- Santa Fe County, NM128
- Bernalillo County, NM74
- Sandoval County, NM43
- Rio Arriba County, NM38
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | +52 |
| 2012 | −131 |
| 2013 | −436 |
| 2014 | −270 |
| 2015 | −90 |
| 2016 | +279 |
| 2017 | +426 |
| 2018 | +147 |
| 2019 | +256 |
| 2021 | −135 |
| 2022 | −305 |
| 2023 | −7 |
| 2024 | +29 |
| 2025 | −85 |
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.
Across the recorded series it reached a Democratic high of 32.9 points in 1964 and a Republican high of 40.7 points in 1984. Between 2020 and 2024 the county moved 3.5 points toward the Democratic candidate; the 2024 margin was 30.2 points.
A population of 19,435, a 70% non-Hispanic-white share, and a median household income of $147,139 describe the county. The county's voting pattern over the last decade is most similar to that of Teton County and Summit County.
The counties whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Los Alamos County, New Mexico. Akashic. https://akashic.app/county/35028/. Accessed May 20, 2026. License: CC BY 4.0.