ZIP code · Williamsfield · Illinois · United States
ZIP code 61489 — Williamsfield
ZIP code 61489 serves Williamsfield, Illinois.
- Postal code
- 61489Single source Value from one source, not cross-checked.
- City
- Williamsfield
- County
- Knox FIPS 17095
- State
- Illinois
- Country
- United States
- Coordinates
- 40.9277, -90.0267 — precision precise (locality)
View on OpenStreetMap - Population
- 743 (ZCTA, ACS 5-year)
- Population density
- 16 / sq mi
- Land area
- 47.1 sq mi (121.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $83,625
- Per-capita income
- $44,900
- Median age
- 44.2
- Households
- 299
- Housing units
- 376
- Median home value
- $131,300
- Median gross rent
- $644 / month
- Congressional districts
- IL-17 (also 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)
- Area code
- 309Telephone 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 61489 with another ZIP · ZIPs within 25 miles · distance from 61489
Map of ZIP code 61489
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 | 32 | 36 | 49 | 62 | 72 | 81 | 84 | 82 | 76 | 64 | 49 | 36 |
| Avg low °F | 14 | 18 | 29 | 39 | 51 | 61 | 65 | 63 | 54 | 42 | 31 | 21 |
| Precip in | 2.1 | 2.1 | 2.6 | 4.0 | 5.5 | 4.6 | 4.2 | 3.5 | 4.2 | 3.0 | 2.5 | 2.2 |
NOAA 1991–2020 climate normals from the nearest station: KNOXVILLE (13.9 mi) · NOAA NCEI
Places in ZIP 61489
- 1 schools
- 4 parks
- 1 playgrounds
- 1 libraries
- 1 post offices
- 3 places of worship
- 1 banks
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