ZIP code · Tonica · Illinois · United States
ZIP code 61370 — Tonica
ZIP code 61370 serves Tonica, Illinois.
- Postal code
- 61370Single source Value from one source, not cross-checked.
- City
- Tonica
- County
- LaSalle FIPS 17099
- State
- Illinois
- Country
- United States
- Coordinates
- 41.2327, -89.0890 — precision precise (locality)
View on OpenStreetMap - Population
- 1,250 (ZCTA, ACS 5-year)
- Population density
- 28 / sq mi
- Land area
- 44.6 sq mi (115.5 km²) (ZCTA, ACS 5-year)
- Median household income
- $82,917
- Per-capita income
- $37,951
- Median age
- 43
- Households
- 504
- Housing units
- 552
- Median home value
- $153,300
- Median gross rent
- $850 / month
- Congressional districts
- IL-16 (also IL-14) (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 61370 with another ZIP · ZIPs within 25 miles · distance from 61370
Map of ZIP code 61370
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 14°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 30 | 35 | 48 | 61 | 73 | 81 | 84 | 82 | 77 | 64 | 48 | 36 |
| Avg low °F | 14 | 18 | 27 | 38 | 49 | 59 | 63 | 61 | 53 | 41 | 30 | 20 |
| Precip in | 1.8 | 1.8 | 2.3 | 3.8 | 4.5 | 4.6 | 3.9 | 3.7 | 3.4 | 3.5 | 2.7 | 2.1 |
NOAA 1991–2020 climate normals from the nearest station: PERU (8.2 mi) · NOAA NCEI
Places in ZIP 61370
- 2 schools
- 2 parks
- 1 places of worship
- 1 gas 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