ZIP code · South Lyon · Michigan · United States
ZIP code 48178 — South Lyon
ZIP code 48178 serves South Lyon, Michigan.
- Postal code
- 48178Single source Value from one source, not cross-checked.
- City
- South Lyon
- County
- Oakland FIPS 26125
- State
- Michigan
- Country
- United States
- Coordinates
- 42.4567, -83.6590 — precision precise (locality)
View on OpenStreetMap - Population
- 37,303 (ZCTA, ACS 5-year)
- Population density
- 778 / sq mi
- Land area
- 48 sq mi (124.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $130,781
- Per-capita income
- $61,135
- Median age
- 42.4
- Households
- 13,920
- Housing units
- 14,402
- Median home value
- $392,300
- Median gross rent
- $1,231 / month
- Congressional districts
- MI-7 (also 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)
Tools: compare 48178 with another ZIP · ZIPs within 25 miles · distance from 48178
Map of ZIP code 48178
Climate — monthly normals
Warmest month Jul (avg high 82°F), coldest Feb (avg low 14°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 34 | 44 | 57 | 69 | 77 | 82 | 79 | 74 | 60 | 47 | 35 |
| Avg low °F | 15 | 14 | 24 | 34 | 45 | 54 | 59 | 58 | 50 | 40 | 30 | 22 |
| Precip in | 2.4 | 2.1 | 2.4 | 3.0 | 3.6 | 3.7 | 3.4 | 3.3 | 3.1 | 2.8 | 2.5 | 2.1 |
NOAA 1991–2020 climate normals from the nearest station: WHITMORE LAKE 1NW (6.5 mi) · NOAA NCEI
Places in ZIP 48178
- 11 schools
- 4 doctors & dentists
- 5 pharmacies
- 3 supermarkets
- 20 restaurants & cafés
- 1 bars & pubs
- 8 parks
- 17 playgrounds
- 2 gyms & sports centres
- 1 libraries
- 1 post offices
- 5 places of worship
- 3 banks
- 7 gas stations
- 3 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