ZIP code · Indianapolis · Indiana · United States

ZIP code 46251 — Indianapolis

ZIP code 46251 serves Indianapolis, Indiana.

Postal code: 46251
Single source Value from one source, not cross-checked.
City: Indianapolis
County: Marion
State: Indiana
Country: United States
Coordinates: 39.7795, -86.1328 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 6b (-5 to 0 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone: America/Indiana/Indianapolis (UTC−5 / UTC−4 DST)
Area codes: 317, 463, 765
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 46251 with another ZIP · ZIPs within 25 miles · distance from 46251

Climate — monthly normals

Warmest month Jul (avg high 84°F), coldest Jan (avg low 19°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	34	39	50	62	72	81	84	83	77	65	51	39
Avg low °F	19	22	31	41	52	62	64	63	55	44	33	24
Precip in	3.1	2.3	3.7	4.5	5.0	5.4	3.9	3.6	3.2	3.2	3.4	3.3

NOAA 1991–2020 climate normals from the nearest station: INDIANAPOLIS SE SIDE (5.6 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