Zip Code 48109 — Ann Arbor, MI
48109 is a ZIP Code associated with Ann Arbor, MI, located within Washtenaw. The postal region supports an estimated population of 5,939 residents across Data Pending housing units, with a population density of 1,643.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.284080, -83.725310)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 48109 |
| Primary City | Ann Arbor |
| State / Province | MI |
| County | Washtenaw |
| Total Population | 5,939 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 1,643.6 people/sq mi |
| Timezone | America/Detroit |
How 48109 Compares
| Metric | ZIP 48109 | Washtenaw County | MI State Average |
|---|
| Population | 5,939 | 355,280 | 10,077,716 |
| Median Income | Data Pending | N/A | N/A |
| Population Density | 1,643.6 /sq mi | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →