ZIP code · Lanark · Illinois · United States

ZIP code 61046 — Lanark

ZIP code 61046 serves Lanark, Illinois.

Postal code
61046
Single source Value from one source, not cross-checked.
City
Lanark
County
Carroll FIPS 17015
State
Illinois
Country
United States
Coordinates
42.0935, -89.8247 — precision precise (locality)
View on OpenStreetMap
Population
2,599 (ZCTA, ACS 5-year)
Population density
31 / sq mi
Land area
84 sq mi (217.5 km²) (ZCTA, ACS 5-year)
Median household income
$88,833
Per-capita income
$46,432
Median age
48.6
Households
1,134
Housing units
1,916
Median home value
$147,600
Median gross rent
$703 / month
Congressional district
IL-17 (119th Congress)
USDA hardiness zone
5a (-20 to -15 °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.

Climate — monthly normals

Warmest month Jul (avg high 85°F), coldest Jan (avg low 11°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F313548617282858377644936
Avg low °F111426364757605850382717
Precip in1.71.82.53.94.65.54.93.93.73.02.62.2

NOAA 1991–2020 climate normals from the nearest station: MT CARROLL (8.2 mi) · NOAA NCEI

Places in ZIP 61046

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