ZIP code · Cisco · Illinois · United States
ZIP code 61830 — Cisco
ZIP code 61830 serves Cisco, Illinois.
- Postal code
- 61830Single source Value from one source, not cross-checked.
- City
- Cisco
- County
- Piatt FIPS 17147
- State
- Illinois
- Country
- United States
- Coordinates
- 39.9972, -88.6962 — precision precise (locality)
View on OpenStreetMap - Population
- 502 (ZCTA, ACS 5-year)
- Population density
- 15 / sq mi
- Land area
- 33.6 sq mi (87 km²) (ZCTA, ACS 5-year)
- Median household income
- $66,750
- Per-capita income
- $30,401
- Median age
- 35.3
- Households
- 179
- Housing units
- 181
- Median home value
- $135,200
- Median gross rent
- $1,292 / month
- Congressional districts
- IL-13 (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)
- 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 61830 with another ZIP · ZIPs within 25 miles · distance from 61830
Map of ZIP code 61830
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 | 23 | 32 | 42 | 53 | 62 | 66 | 63 | 55 | 44 | 34 | 25 |
| Precip in | 2.0 | 1.8 | 2.5 | 3.7 | 4.4 | 4.4 | 3.3 | 3.0 | 3.0 | 3.2 | 3.0 | 2.1 |
NOAA 1991–2020 climate normals from the nearest station: DECATUR AP (14.4 mi) · NOAA NCEI
Places in ZIP 61830
- 1 playgrounds
- 1 libraries
- 1 post offices
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