ZIP code · Joliet · Illinois · United States

ZIP code 60434 — Joliet

ZIP code 60434 serves Joliet, Illinois.

Postal code: 60434
Single source Value from one source, not cross-checked.
City: Joliet
County: Will
State: Illinois
Country: United States
Coordinates: 41.5254, -88.0842 — precision precise (locality)
View on OpenStreetMap
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 codes: 815, 779
Telephone 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 60434 with another ZIP · ZIPs within 25 miles · distance from 60434

Climate — monthly normals

Warmest month Jul (avg high 84°F), coldest Jan (avg low 17°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	31	35	47	60	71	80	84	82	76	63	49	36
Avg low °F	17	20	29	39	49	60	64	63	55	43	32	22
Precip in	2.0	1.8	2.3	3.9	4.5	4.3	4.5	4.0	3.2	3.1	2.5	1.9

NOAA 1991–2020 climate normals from the nearest station: JOLIET BRANDON RD DAM (1.8 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 · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page