ZIP code · Alton · Illinois · United States
ZIP code 62002 — Alton
ZIP code 62002 serves Alton, Illinois.
- Postal code
- 62002Single source Value from one source, not cross-checked.
- City
- Alton
- County
- Madison FIPS 17119
- State
- Illinois
- Country
- United States
- Coordinates
- 38.9087, -90.1568 — precision precise (locality)
View on OpenStreetMap - Population
- 30,036 (ZCTA, ACS 5-year)
- Population density
- 728 / sq mi
- Land area
- 41.3 sq mi (106.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $57,851
- Per-capita income
- $33,122
- Median age
- 41.5
- Households
- 13,023
- Housing units
- 14,832
- Median home value
- $114,300
- Median gross rent
- $941 / month
- Congressional districts
- IL-13 (also IL-15) (119th Congress)
- USDA hardiness zone
- 7a (0 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 62002 with another ZIP · ZIPs within 25 miles · distance from 62002
Map of ZIP code 62002
Climate — monthly normals
Warmest month Jul (avg high 87°F), coldest Jan (avg low 22°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 39 | 44 | 54 | 66 | 75 | 84 | 87 | 86 | 80 | 68 | 54 | 44 |
| Avg low °F | 22 | 25 | 35 | 45 | 56 | 66 | 69 | 67 | 60 | 48 | 37 | 27 |
| Precip in | 2.5 | 2.5 | 3.5 | 4.9 | 5.5 | 3.4 | 4.0 | 3.3 | 3.4 | 2.9 | 3.4 | 2.6 |
NOAA 1991–2020 climate normals from the nearest station: ALTON - MELVIN PRICE L&D (2.9 mi) · NOAA NCEI
Places in ZIP 62002
- 27 schools
- 7 hospitals & clinics
- 7 doctors & dentists
- 3 supermarkets
- 56 restaurants & cafés
- 7 bars & pubs
- 25 parks
- 18 playgrounds
- 6 gyms & sports centres
- 3 libraries
- 2 post offices
- 53 places of worship
- 6 banks
- 9 gas stations
- 2 EV charging stations
- 5 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