ZIP code · Branchton · Pennsylvania · United States

ZIP code 16021 — Branchton

ZIP code 16021 serves Branchton, Pennsylvania.

Postal code: 16021
Single source Value from one source, not cross-checked.
City: Branchton
County: Butler
State: Pennsylvania
Country: United States
Coordinates: 41.0726, -79.9856 — 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/New_York (UTC−5 / UTC−4 DST)
Area codes: 724, 878 (from the nearest rate centre)
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 16021 with another ZIP · ZIPs within 25 miles · distance from 16021

Climate — monthly normals

Warmest month Jul (avg high 81°F), coldest Jan (avg low 17°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	33	37	46	59	69	77	81	80	74	62	49	38
Avg low °F	17	18	25	35	45	54	58	56	50	39	31	23
Precip in	3.5	2.7	3.4	3.9	4.1	4.8	4.6	4.0	4.1	3.5	3.5	3.2

NOAA 1991–2020 climate normals from the nearest station: SLIPPERY ROCK 1 SSW (4.0 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