ZIP code · Merrillville · Indiana · United States

ZIP code 46410 — Merrillville

ZIP code 46410 serves Merrillville, Indiana.

Postal code
46410
Single source Value from one source, not cross-checked.
City
Merrillville
County
Lake FIPS 18089
State
Indiana
Country
United States
Coordinates
41.4957, -87.3509 — precision precise (locality)
View on OpenStreetMap
Population
38,803 (ZCTA, ACS 5-year)
Population density
1,291 / sq mi
Land area
30.1 sq mi (77.8 km²) (ZCTA, ACS 5-year)
Median household income
$61,735
Per-capita income
$35,166
Median age
40.8
Households
16,737
Housing units
17,685
Median home value
$192,100
Median gross rent
$1,267 / month
Congressional district
IN-1 (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 code
219
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 83°F), coldest Jan (avg low 18°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F323648617180838175644937
Avg low °F182129394959636254443424
Precip in2.42.22.63.74.64.34.13.62.93.93.32.6

NOAA 1991–2020 climate normals from the nearest station: VALPARAISO WTR WKS (16.2 mi) · NOAA NCEI

Places in ZIP 46410

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