ZIP code · Dennison · Illinois · United States
ZIP code 62423 — Dennison
ZIP code 62423 serves Dennison, Illinois.
- Postal code
- 62423Single source Value from one source, not cross-checked.
- City
- Dennison
- County
- Clark FIPS 17023
- State
- Illinois
- Country
- United States
- Coordinates
- 39.4490, -87.5867 — precision precise (locality)
View on OpenStreetMap - Population
- 609 (ZCTA, ACS 5-year)
- Population density
- 25 / sq mi
- Land area
- 24.4 sq mi (63.1 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $36,721
- Median age
- 37.2
- Households
- 248
- Housing units
- 264
- Median home value
- $147,900
- Congressional districts
- IL-12 (also IL-15) (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/Chicago (UTC−6 / UTC−5 DST)
Tools: compare 62423 with another ZIP · ZIPs within 25 miles · distance from 62423
Map of ZIP code 62423
Climate — monthly normals
Warmest month Jul (avg high 90°F), coldest Jan (avg low 19°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 40 | 45 | 56 | 69 | 78 | 87 | 90 | 89 | 84 | 71 | 56 | 45 |
| Avg low °F | 19 | 23 | 33 | 44 | 55 | 63 | 66 | 64 | 56 | 43 | 33 | 25 |
| Precip in | 2.5 | 2.5 | 3.4 | 4.9 | 4.8 | 5.1 | 4.3 | 3.3 | 3.3 | 3.7 | 3.7 | 3.2 |
NOAA 1991–2020 climate normals from the nearest station: TERRE HAUTE INDIANA STATE (9.6 mi) · NOAA NCEI
Places in ZIP 62423
- 1 post offices
- 4 places of worship
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