ZIP code · Rockford · Illinois · United States
ZIP code 61104 — Rockford
ZIP code 61104 serves Rockford, Illinois.
- Postal code
- 61104Single source Value from one source, not cross-checked.
- City
- Rockford
- County
- Winnebago FIPS 17201
- State
- Illinois
- Country
- United States
- Coordinates
- 42.2554, -89.0768 — precision precise (locality)
View on OpenStreetMap - Population
- 17,584 (ZCTA, ACS 5-year)
- Population density
- 3,906 / sq mi
- Land area
- 4.5 sq mi (11.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $32,161
- Per-capita income
- $20,618
- Median age
- 34.6
- Households
- 7,752
- Housing units
- 9,253
- Median home value
- $83,700
- Median gross rent
- $854 / month
- Congressional district
- IL-17 (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)
Tools: compare 61104 with another ZIP · ZIPs within 25 miles · distance from 61104
Map of ZIP code 61104
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 33 | 47 | 60 | 71 | 81 | 84 | 82 | 75 | 62 | 47 | 34 |
| Avg low °F | 15 | 18 | 28 | 39 | 50 | 60 | 64 | 62 | 54 | 42 | 31 | 20 |
| Precip in | 1.6 | 1.6 | 2.4 | 3.8 | 4.2 | 5.2 | 3.8 | 4.2 | 3.6 | 2.6 | 2.3 | 1.9 |
NOAA 1991–2020 climate normals from the nearest station: ROCKFORD GTR ROCKFORD AP (4.4 mi) · NOAA NCEI
Places in ZIP 61104
- 11 schools
- 4 hospitals & clinics
- 2 doctors & dentists
- 2 pharmacies
- 1 supermarkets
- 22 restaurants & cafés
- 7 bars & pubs
- 12 parks
- 12 playgrounds
- 3 gyms & sports centres
- 26 places of worship
- 2 banks
- 5 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