Los Alamos County, NM ZIP Codes
2 ZIP codes cover all or part of Los Alamos County, New Mexico: 87544 and 87547. The Census Bureau counts 19,435 residents in the county, with a median household income of $147,139 and a median home value of $495,800. Median household income ranges from $138,583 in 87544 to $156,444 in 87547. Its largest communities include White Rock.
Los Alamos County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 19,435 |
| Households | 8,247 |
| Median household income | $147,139 |
| Median home value | $495,800 |
| Median age | 39.3 |
| Median rent | $1,375 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 19,435 |
| Households (sum of ZIP codes) | 8,247 |
| Median household income, range across ZIP codes | $138,583 (87544) to $156,444 (87547) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $143,096 |
| Homeowners | 74.8% |
| Households with kids under 18 | 27.1% |
| Moved in the past year | 13.9% |
| Carrier routes in EDDM2GO's route library | 14 routes, 6,280 homes (1 of 2 ZIP codes) |
Top facts
- Highest median household income in Los Alamos County: 87547 ($156,444)
- Most residents: 87544 (13,598 people)
- Highest homeownership: 87547 (97.6% own their home)
- Most households with kids: 87547 (33.9% of households)
- Most new movers: 87544 (15.3% moved in last year)
- Youngest median age: 87544 (38.6 years)
- Highest median home value: 87547 ($505,900)
Every ZIP code in Los Alamos County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 87544 | Los Alamos | 13,598 | 6,163 | $138,583 | $488,300 | 67.1% | 24.8% | 15.3% | 14 | 6,708 | 42% of its land |
| 87547 | White Rock | 5,837 | 2,084 | $156,444 | $505,900 | 97.6% | 33.9% | 10.7% | — | — | 100% of its land |
A ZIP code is listed for Los Alamos County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- White Rock — 5,716 residents · 2 ZIP codes
Price a mailing to Los Alamos County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Los Alamos County, NM?
- 87544 and 87547. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Los Alamos County?
- 19,435 residents in 8,247 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Los Alamos County?
- $147,139 for the county as a whole. Its ZIP codes range from $138,583 (87544) to $156,444 (87547).
- Which Los Alamos County ZIP code has the highest median household income?
- 87547, at $156,444, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Los Alamos County?
- For the 1 of 2 ZIP codes in EDDM2GO's stored route library: 14 carrier routes reaching 6,280 residential and 428 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.