ZIP code · Forreston · Illinois · United States
ZIP code 61030 — Forreston
ZIP code 61030 serves Forreston, Illinois.
- Postal code
- 61030Single source Value from one source, not cross-checked.
- City
- Forreston
- County
- Ogle FIPS 17141
- State
- Illinois
- Country
- United States
- Coordinates
- 42.1229, -89.5831 — precision precise (locality)
View on OpenStreetMap - Population
- 1,911 (ZCTA, ACS 5-year)
- Population density
- 31 / sq mi
- Land area
- 60.9 sq mi (157.7 km²) (ZCTA, ACS 5-year)
- Median household income
- $69,375
- Per-capita income
- $31,255
- Median age
- 41.8
- Households
- 791
- Housing units
- 837
- Median home value
- $148,100
- Median gross rent
- $669 / month
- Congressional district
- IL-16 (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 61030 with another ZIP · ZIPs within 25 miles · distance from 61030
Map of ZIP code 61030
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 13°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 35 | 48 | 61 | 73 | 82 | 85 | 83 | 77 | 64 | 48 | 35 |
| Avg low °F | 13 | 17 | 28 | 38 | 49 | 59 | 62 | 59 | 51 | 40 | 29 | 19 |
| Precip in | 1.9 | 1.9 | 2.8 | 3.9 | 4.7 | 5.1 | 4.4 | 3.7 | 3.6 | 3.2 | 2.6 | 2.1 |
NOAA 1991–2020 climate normals from the nearest station: POLO 5NW (6.2 mi) · NOAA NCEI
Places in ZIP 61030
- 1 schools
- 1 restaurants & cafés
- 1 libraries
- 1 post offices
- 2 places of worship
- 1 banks
- 1 gas 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