ZIP code · West Brooklyn · Illinois · United States
ZIP code 61378 — West Brooklyn
ZIP code 61378 serves West Brooklyn, Illinois.
- Postal code
- 61378Single source Value from one source, not cross-checked.
- City
- West Brooklyn
- County
- Lee FIPS 17103
- State
- Illinois
- Country
- United States
- Coordinates
- 41.7292, -89.1909 — precision precise (locality)
View on OpenStreetMap - Population
- 606 (ZCTA, ACS 5-year)
- Population density
- 10 / sq mi
- Land area
- 60.6 sq mi (156.9 km²) (ZCTA, ACS 5-year)
- Median household income
- $84,464
- Per-capita income
- $37,714
- Median age
- 29.6
- Households
- 206
- Housing units
- 224
- Median home value
- $171,600
- Median gross rent
- $1,088 / 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)
- Area code
- 815Telephone 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 61378 with another ZIP · ZIPs within 25 miles · distance from 61378
Map of ZIP code 61378
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 12°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 28 | 33 | 46 | 59 | 71 | 80 | 83 | 81 | 75 | 63 | 47 | 34 |
| Avg low °F | 12 | 16 | 26 | 36 | 49 | 58 | 61 | 60 | 51 | 40 | 29 | 19 |
NOAA 1991–2020 climate normals from the nearest station: COMPTON 1 NW (4.9 mi) · NOAA NCEI
Places in ZIP 61378
- 1 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