| City: | Fort Greely, Alaska |
| City Alias: | Delta Jct, Delta Junction |
| Borough: | Southeast Fairbanks Borough |
| Timezone: | Alaska (GMT -09:00) |
| Local Time: | 9:23:57 AM |
| Population: | No Population Data |
| Area Code: | 907 |
| Classification: | PO Box |
| Coordinates: | 63.8860, -145.6857 |
| Quick Link: |
Fort Greely is a U.S. Army installation in interior Alaska, about 100 miles southeast of Fairbanks. The base serves as a key component of the nation's Ground-based Midcourse Defense system, operating missile defense interceptors since 2004. With 347 PO Boxes and zero Census-counted population, the ZIP code covers military personnel and their families who receive mail through base facilities rather than individual household delivery.
The 106-square-mile territory makes this one of Alaska's larger military footprints. Mail addressed to Fort Greely can also use "Delta Junction" or "Delta Jct" as the city name, since the base sits adjacent to that community. The base post office handles all mail distribution, with PO Boxes serving as the primary delivery method for personnel stationed here.
Five business establishments employ 45 workers within the ZIP code, reflecting the contracted services that support base operations. There's no residential street delivery in the traditional sense. Instead, mail flows through unit mailrooms and the base postal facility. Service members and civilian employees pick up packages and correspondence at designated points.
For anyone mailing to Fort Greely, using a PO Box number is standard practice. The base doesn't have extensive street addressing. Only "1st St" appears in postal records, and the single named building in the system is the Postmaster facility itself.
Street addressing is minimal on base, with only 1st St appearing in postal records. The Postmaster building is the only named facility.
ZIP Code 99731 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 44 people with an annual payroll of $3,697,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 368Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $948,000Source: CBP |
| Annual Payroll: | $3,697,000Source: CBP |
| # of Employees: | 44Source: CBP |
ZIP Code 99731 is located in Southeast Fairbanks Borough, Alaska, within the Metropolitan Statistical Area (CBSA ) and Alaska's 0th Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 99731. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | --Source: Census |
| CBSA Number: | --Source: Census |
| CBSA Type: | --Source: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 00Source: USPS |
| Congressional Land Area: | 571951.26 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0226100Source: Census |
| Place Name: | Fort Greely CDP; AlaskaSource: Census |
We could not locate which school district 99731 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 2 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 February 1, 2026.