ZIP code · Ancona · Illinois · United States
ZIP code 61311 — Ancona
ZIP code 61311 serves Ancona, Illinois.
- Postal code
- 61311Single source Value from one source, not cross-checked.
- City
- Ancona
- County
- Livingston FIPS 17105
- State
- Illinois
- Country
- United States
- Coordinates
- 41.0426, -88.8642 — precision precise (locality)
View on OpenStreetMap - Population
- 244 (ZCTA, ACS 5-year)
- Population density
- 15 / sq mi
- Land area
- 16.4 sq mi (42.4 km²) (ZCTA, ACS 5-year)
- Per-capita income
- $31,091
- Median age
- 44.7
- Households
- 104
- Housing units
- 104
- Median home value
- $116,300
- Congressional district
- 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)
Tools: compare 61311 with another ZIP · ZIPs within 25 miles · distance from 61311
Map of ZIP code 61311
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 16°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 32 | 37 | 49 | 62 | 74 | 84 | 88 | 84 | 78 | 65 | 49 | 37 |
| Avg low °F | 16 | 19 | 29 | 40 | 52 | 62 | 66 | 64 | 55 | 44 | 32 | 22 |
| Precip in | 2.6 | 1.9 | 2.8 | 3.7 | 4.7 | 4.7 | 4.1 | 3.7 | 3.6 | 3.0 | 2.6 | 2.2 |
NOAA 1991–2020 climate normals from the nearest station: STREATOR 3 SE (4.2 mi) · NOAA NCEI
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