ZIP code · Lemont · Illinois · United States

ZIP code 60439 — Lemont

ZIP code 60439 serves Lemont, Illinois.

Postal code
60439
Single source Value from one source, not cross-checked.
City
Lemont
County
DuPage FIPS 17043
State
Illinois
Country
United States
Coordinates
41.7074, -87.9756 — precision precise (locality)
View on OpenStreetMap
Population
24,255 (ZCTA, ACS 5-year)
Population density
816 / sq mi
Land area
29.7 sq mi (76.9 km²) (ZCTA, ACS 5-year)
Median household income
$132,511
Per-capita income
$56,574
Median age
44.8
Households
8,697
Housing units
8,962
Median home value
$466,800
Median gross rent
$1,046 / month
Congressional districts
IL-11 (also IL-1, IL-14) (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 codes
630, 331
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.

Climate — monthly normals

Warmest month Jul (avg high 90°F), coldest Jan (avg low 15°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F333749627384908780655038
Avg low °F151828395060646355433121
Precip in2.32.02.54.15.04.74.14.53.53.72.72.4

NOAA 1991–2020 climate normals from the nearest station: LITTLE RED SCHOOL HSE (5.2 mi) · NOAA NCEI

Places in ZIP 60439

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