| City: | Los Alamos, New Mexico |
| Names to Avoid: | Scientific Lab |
| County: | Los Alamos County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 10:28:10 PM |
| Population: | No Population Data |
| Area Code: | 505 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 35.8849, -106.3236 |
| Quick Link: |
Los Alamos National Laboratory, birthplace of the atomic bomb and one of the largest science institutions in the world, operates under dedicated ZIP code 87545 in Los Alamos County, New Mexico. Established in 1943 as Project Y during World War II's Manhattan Project, the laboratory was directed by physicist J. Robert Oppenheimer through its wartime mission. Scientists and engineers at Los Alamos designed the first nuclear weapons, including the plutonium bomb tested at Trinity in July 1945. Today the lab employs nearly 12,000 people conducting research in national security, energy, and science.
The laboratory occupies a sprawling campus on the Pajarito Plateau, roughly 35 miles northwest of Santa Fe. Two delivery codes route mail to Los Alamos National Laboratories facilities. The site includes historic structures from both the Manhattan Project era and the original Los Alamos Ranch School, with 30 official historic landmarks now part of the Manhattan Project National Historical Park.
No Census population data is available for this ZIP, as the laboratory itself is a workplace rather than a residential area. The town of Los Alamos has its own residential ZIP codes. This designation has served the laboratory's classified and unclassified correspondence for over two decades. Los Alamos is the valid mailing city.
| Establishments: | 7 |
| Employment: | 11,761 |
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 87545 supports both business and residential activity. According to the Business Census (2024), there are 6 business establishments, employing about 13,371 people with an annual payroll of $1,731,591,000. USPS data shows 0 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 1,430Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 6Source: CBP |
| 1st Quarter Payroll: | $404,719,000Source: CBP |
| Annual Payroll: | $1,731,591,000Source: CBP |
| # of Employees: | 13,371Source: CBP |
ZIP Code 87545 is located in Los Alamos County, New Mexico, within the Los Alamos, NM Metropolitan Statistical Area (CBSA 31060) and New Mexico's 3rd Congressional District. This Micro area has a population of 19,374 people, about 0.00% of whom live in ZIP Code 87545. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Los Alamos, NMSource: Census |
| CBSA Number: | 31060Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 19,374Source: Census |
| MSA: | Santa Fe, NM MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 03Source: USPS |
| Congressional Land Area: | 44958.52 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 3542320Source: Census |
| Place Name: | Los Alamos CDP; New MexicoSource: Census |
We could not locate which school district 87545 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.