ZIP code · Janesville · Wisconsin · United States
ZIP code 53548 — Janesville
ZIP code 53548 serves Janesville, Wisconsin.
- Postal code
- 53548Single source Value from one source, not cross-checked.
- City
- Janesville
- County
- Rock FIPS 55105
- State
- Wisconsin
- Country
- United States
- Coordinates
- 42.6854, -89.1287 — precision precise (locality)
View on OpenStreetMap - Population
- 20,509 (ZCTA, ACS 5-year)
- Population density
- 274 / sq mi
- Land area
- 75 sq mi (194.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $74,696
- Per-capita income
- $35,395
- Median age
- 40.8
- Households
- 8,436
- Housing units
- 8,894
- Median home value
- $226,600
- Median gross rent
- $999 / month
- Congressional districts
- WI-2 (also WI-1) (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 608Telephone 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 53548 with another ZIP · ZIPs within 25 miles · distance from 53548
Map of ZIP code 53548
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 12°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 32 | 45 | 58 | 70 | 80 | 83 | 82 | 75 | 62 | 46 | 34 |
| Avg low °F | 12 | 15 | 25 | 36 | 48 | 58 | 62 | 60 | 51 | 40 | 29 | 18 |
| Precip in | 1.6 | 1.6 | 2.1 | 3.6 | 4.1 | 5.0 | 4.2 | 4.3 | 3.7 | 3.0 | 2.3 | 1.9 |
NOAA 1991–2020 climate normals from the nearest station: AFTON - JANESVILLE WWTP (4.7 mi) · NOAA NCEI
Places in ZIP 53548
- 11 schools
- 2 hospitals & clinics
- 2 doctors & dentists
- 1 pharmacies
- 10 restaurants & cafés
- 6 bars & pubs
- 17 parks
- 15 playgrounds
- 3 gyms & sports centres
- 12 places of worship
- 3 banks
- 7 gas stations
- 2 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