| City: | Anchorage, Alaska |
| Borough: | Anchorage Borough |
| Timezone: | Alaska (GMT -09:00) |
| Local Time: | 11:19:40 PM |
| Population: | No Population Data |
| Area Code: | 907 |
| Classification: | PO Box |
| Coordinates: | 61.2181, -149.9003 |
| Quick Link: |
While classified as a PO Box ZIP, the designation has street delivery through a single carrier route along Muldoon Road with 137 delivery points that include unit-based addresses. The post office also supports 189 business customers alongside residential PO Box holders. This setup is common in urban areas where PO Box service gets separated into its own ZIP to streamline operations, though the boxes themselves serve customers who may live anywhere in the Anchorage area. There's no census population data tied directly to this ZIP since it's an administrative postal designation rather than a residential community.
The single street route on Muldoon Road represents the limited street delivery component of this primarily PO Box-focused ZIP code in urban Anchorage.
ZIP Code 99521 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 7 people with an annual payroll of $148,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 691Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $46,000Source: CBP |
| Annual Payroll: | $148,000Source: CBP |
| # of Employees: | 7Source: CBP |
ZIP Code 99521 is located in Anchorage Borough, Alaska, within the Anchorage, AK Metropolitan Statistical Area (CBSA 11260) and Alaska's 0th Congressional District. This Metro area has a population of 399,746 people, about 0.00% of whom live in ZIP Code 99521. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Anchorage, AKSource: Census |
| CBSA Number: | 11260Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 399,746Source: Census |
| MSA: | Anchorage, AK MSASource: 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: | 0203000Source: Census |
| Place Name: | Anchorage municipality; AlaskaSource: Census |
We could not locate which school district 99521 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.