ZIP CodesZIP codes in Los Alamos County, New Mexico
Los Alamos County, New Mexico has 3 ZIP codes in this list, from 87544 to 87547. They cover 2 places, among them Los Alamos and White Rock.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 87544 | Los Alamos | 133 | 35.866, -106.268 |
| 87545 | Los Alamos | no area | 35.864, -106.295 |
| 87547 | White Rock | 6.5 | 35.828, -106.204 |
The ZIP code areas of Los Alamos County add up to about 140 square miles of land (361 sq km) as the Census Bureau draws them. The largest is 87544 (Los Alamos), with 133 square miles.
Places with more than one code here: Los Alamos (2 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Los Alamos, NM 87544.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.