Total enrollment
3,667
+128 (+4%) vs SY 2020-21
Los Alamos County
New Mexico · Public K-12
Los Alamos County's public schools, 8 in all, serve approximately 3,971 K-12 students inside New Mexico, with Los Alamos the largest district by enrollment. That works out to 5 elementary, 1 middle, and 1 high schools.
4-year change in Los Alamos County
SY 2020-21 vs SY 2024-25School count
7
-1 (-12%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Los Alamos County ranks
Among counties| Measure | This county | In New Mexico | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 67.5% | #1 of 10 | N/A |
| Enrollment ranked largest first | 3,971 | #14 of 26 | #1,542 of 2,745 |
| Number of schools ranked most first | 8 | #25 of 26 | N/A |
| Students per teacher ranked fewest first | 12.9:1 | #13 of 25 | #872 of 2,655 |
| Free or reduced-price lunch share ranked highest first | 12.0% | #26 of 26 | #2,522 of 2,526 |
| Diversity index ranked most diverse first | 58.7% | #5 of 26 | #642 of 2,707 |
Counties need at least 3 schools and 1,000 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Los Alamos County school rankings
Residents
19,435
all ages · ACS 5-yr
Schools
8
1 districts
Enrollment
3,971
students · NCES CCD
Median income
$147,139
Above New Mexico avg
Free/reduced lunch
12.0%
Below New Mexico avg
Elementary
5
1,943 students
Middle
1
543 students
High
1
1,181 students
Combined / other
1
304 students
LARGEST DISTRICT
LOS ALAMOS
3,971 students · 1 district in Los Alamos County
County vs. school enrollment demographics
Left bar is the racial makeup of Los Alamos County residents (Census ACS 5-year). Right bar is the enrollment-weighted makeup of public schools in the county (NCES CCD). NCES systematically under-reports Hispanic, Pacific Islander, and Native American enrollment for many schools; where the resident share is meaningful but the reported school share is zero, we mark the school bar "not reported".
County residents
School enrollment
Bachelor's+
69.7%
adults 25+
Poverty rate
3.4%
ACS 5-year
Unemployment
0.6%
civilian labor
Median age
39
22.0% under 18
Test scores in Los Alamos County
Latest 2024-25 ELA proficiency, 6 schools ranked. New Mexico state average: 44.1%.
Top 5 schools (ELA)
- MOUNTAIN ELEMENTARY· 84.2%
- LOS ALAMOS MIDDLE· 77.1%
- PINON ELEMENTARY· 74.9%
- CHAMISA ELEMENTARY· 73.6%
- ASPEN ELEMENTARY· 66.4%
Lowest 5 schools (ELA)
- BARRANCA MESA ELEMENTARY· 64.4%
- ASPEN ELEMENTARY· 66.4%
- CHAMISA ELEMENTARY· 73.6%
- PINON ELEMENTARY· 74.9%
- LOS ALAMOS MIDDLE· 77.1%
| Name | City | Level | Grades | Enrollment | Rating |
|---|---|---|---|---|---|
| LOS ALAMOS HIGH | Los Alamos | High | 09-12 | 1,181 | · |
| LOS ALAMOS MIDDLE | Los Alamos | Middle | 07-08 | 543 | · |
| MOUNTAIN ELEMENTARY | Los Alamos | Elementary | PK-06 | 435 | · |
| BARRANCA MESA ELEMENTARY | Los Alamos | Elementary | PK-06 | 429 | · |
| ASPEN ELEMENTARY | Los Alamos | Elementary | PK-06 | 428 | · |
| PINON ELEMENTARY | White Rock | Elementary | PK-06 | 350 | · |
| TOPPER FRESHMAN ACADEMY | Los Alamos | Combined | 09-09 | 304 | · |
| CHAMISA ELEMENTARY | White Rock | Elementary | PK-06 | 301 | · |
Cities in Los Alamos County
About Los Alamos County
Los Alamos County is a low-population county of about 19,435 residents in New Mexico. Its public-school system hosts approximately 3,971 students across 8 schools.
Stepping back, census numbers show median household income runs near $147,139, 70% of adults hold a bachelor's degree or higher, and the poverty rate is around 3%. That income level is 156% higher than the New Mexico median.
Looking at the level breakdown, Los Alamos County consists of 5 elementary schools (1,943 students), 1 middle school (543), 1 high school (1,181), and 1 combined or other schools.
LOS ALAMOS is the biggest district by enrollment, covering about 3,971 students across Los Alamos County.
Five-year track record. Total public-school enrollment in Los Alamos County has expanded 4% since SY 2020-21, moving from about 3,539 students to 3,667. The school count fell from 8 to 7 across the same 4-year window.
Within the allk12 community for this area, the community for Los Alamos County discusses open enrollment windows, redistricting talk, and busing logistics. Members of the local community share what they see day-to-day.
Frequently asked questions
DATA · Census ACS 5-year · NCES Common Core of Data