ZIP code · Ann Arbor · Michigan · United States
ZIP code 48109 — Ann Arbor
ZIP code 48109 serves Ann Arbor, Michigan.
- Postal code
- 48109Single source Value from one source, not cross-checked.
- City
- Ann Arbor
- County
- Washtenaw FIPS 26161
- State
- Michigan
- Country
- United States
- Coordinates
- 42.2776, -83.7409 — precision precise (locality)
View on OpenStreetMap - Population
- 5,722 (ZCTA, ACS 5-year)
- Population density
- 4,105 / sq mi
- Land area
- 1.4 sq mi (3.6 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $38,625
- Median age
- 19.1
- Households
- 95
- Housing units
- 95
- Congressional district
- MI-6 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Detroit (UTC−5 / UTC−4 DST)
- Area code
- 734Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 48109 with another ZIP · ZIPs within 25 miles · distance from 48109
Map of ZIP code 48109
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 16°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 35 | 45 | 58 | 70 | 80 | 84 | 82 | 75 | 62 | 48 | 36 |
| Avg low °F | 16 | 16 | 25 | 34 | 46 | 56 | 59 | 58 | 50 | 39 | 30 | 22 |
| Precip in | 2.8 | 2.4 | 2.8 | 3.3 | 3.8 | 4.3 | 3.9 | 3.3 | 3.0 | 2.9 | 2.7 | 2.6 |
NOAA 1991–2020 climate normals from the nearest station: ANN ARBOR SE (3.5 mi) · NOAA NCEI
Places in ZIP 48109
- 1 colleges & universities
- 3 hospitals & clinics
- 1 pharmacies
- 30 restaurants & cafés
- 9 parks
- 5 playgrounds
- 7 gyms & sports centres
- 11 libraries
- 1 places of worship
- 3 banks
- 1 gas stations
- 5 EV charging stations
- 1 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page