ZIP code · Humboldt · Illinois · United States
ZIP code 61931 — Humboldt
ZIP code 61931 serves Humboldt, Illinois.
- Postal code
- 61931Single source Value from one source, not cross-checked.
- City
- Humboldt
- County
- Coles FIPS 17029
- State
- Illinois
- Country
- United States
- Coordinates
- 39.6012, -88.3141 — precision precise (locality)
View on OpenStreetMap - Population
- 1,328 (ZCTA, ACS 5-year)
- Population density
- 41 / sq mi
- Land area
- 32.6 sq mi (84.3 km²) (ZCTA, ACS 5-year)
- Median household income
- $70,086
- Per-capita income
- $28,187
- Median age
- 35.8
- Households
- 474
- Housing units
- 487
- Median home value
- $125,800
- Median gross rent
- $855 / month
- Congressional district
- 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)
- Area code
- 217Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 61931 with another ZIP · ZIPs within 25 miles · distance from 61931
Map of ZIP code 61931
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 20°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 35 | 40 | 52 | 64 | 74 | 83 | 86 | 84 | 79 | 66 | 51 | 40 |
| Avg low °F | 20 | 24 | 33 | 43 | 54 | 63 | 66 | 64 | 56 | 45 | 35 | 26 |
| Precip in | 2.0 | 1.8 | 2.2 | 4.1 | 3.9 | 4.7 | 4.0 | 2.4 | 2.9 | 3.1 | 3.0 | 1.8 |
NOAA 1991–2020 climate normals from the nearest station: MATTOON COLES CO AP (8.7 mi) · NOAA NCEI
Places in ZIP 61931
- 1 schools
- 1 parks
- 4 playgrounds
- 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