ZIP code · Flanagan · Illinois · United States
ZIP code 61740 — Flanagan
ZIP code 61740 serves Flanagan, Illinois.
- Postal code
- 61740Single source Value from one source, not cross-checked.
- City
- Flanagan
- County
- Livingston FIPS 17105
- State
- Illinois
- Country
- United States
- Coordinates
- 40.8790, -88.8620 — precision precise (locality)
View on OpenStreetMap - Population
- 1,427 (ZCTA, ACS 5-year)
- Population density
- 20 / sq mi
- Land area
- 70.2 sq mi (181.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $79,479
- Per-capita income
- $45,016
- Median age
- 41.2
- Households
- 579
- Housing units
- 670
- Median home value
- $130,200
- Median gross rent
- $836 / month
- 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 61740 with another ZIP · ZIPs within 25 miles · distance from 61740
Map of ZIP code 61740
Climate — monthly normals
Warmest month Jul (avg high 86°F), coldest Jan (avg low 15°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 33 | 38 | 50 | 63 | 74 | 83 | 86 | 84 | 79 | 66 | 51 | 38 |
| Avg low °F | 15 | 19 | 29 | 39 | 51 | 61 | 64 | 62 | 54 | 42 | 31 | 21 |
| Precip in | 2.0 | 1.8 | 2.5 | 3.7 | 4.6 | 4.0 | 3.8 | 3.5 | 3.9 | 3.1 | 2.6 | 2.2 |
NOAA 1991–2020 climate normals from the nearest station: MINONK (9.3 mi) · NOAA NCEI
Places in ZIP 61740
- 1 schools
- 1 hospitals & clinics
- 1 supermarkets
- 1 bars & pubs
- 3 parks
- 1 libraries
- 4 places of worship
- 1 banks
- 2 gas 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