| City: | Ann Arbor, Michigan |
| County: | Washtenaw County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 10:12:26 PM |
| Population: | No Population Data |
| Area Code: | 734 |
| Classification: | PO Box |
| Coordinates: | 42.2836, -83.7455 |
| Quick Link: |
ZIP code 48107 isn't a neighborhood or district. It's Ann Arbor's downtown post office on East Liberty Street. This PO Box-only ZIP exists entirely within ZIP 48104, which handles actual street delivery for the surrounding area. The 248 PO Boxes here serve downtown businesses, professionals, and residents who prefer a central mail pickup location in Michigan's fifth-largest city.
The post office serves 270 business delivery points and employs operations supporting 15 local establishments. Ann Arbor, home to the University of Michigan, has multiple ZIP codes for its 120,000+ residents. This particular ZIP doesn't have its own population or territory because it's just the post office facility itself. People who rent boxes here likely live or work in nearby neighborhoods like Bach, Burns Park, or Angell. Street delivery comes through other Ann Arbor ZIPs, so 48107 functions purely as a PO Box rental location for those who want a downtown address.
Only one street address exists because this ZIP covers just the post office building on East Liberty Street.
ZIP Code 48107 supports both business and residential activity. According to the Business Census (2024), there are 18 business establishments, employing about 241 people with an annual payroll of $16,406,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 490Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 18Source: CBP |
| 1st Quarter Payroll: | $4,545,000Source: CBP |
| Annual Payroll: | $16,406,000Source: CBP |
| # of Employees: | 241Source: CBP |
ZIP Code 48107 is located in Washtenaw County, Michigan, within the Ann Arbor, MI Metropolitan Statistical Area (CBSA 11460) and Michigan's 6th Congressional District. This Metro area has a population of 344,791 people, about 0.00% of whom live in ZIP Code 48107. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Ann Arbor, MISource: Census |
| CBSA Number: | 11460Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 344,791Source: Census |
| MSA: | Detroit-Ann Arbor-Flint, MI CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 06Source: USPS |
| Congressional Land Area: | 3546.74 sq miSource: Census |
| PMSA: | Ann Arbor, MI PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2603000Source: Census |
| Place Name: | Ann Arbor city; MichiganSource: Census |
We could not locate which school district 48107 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 February 1, 2026.