ZIP code · Dedham · Massachusetts · United States

ZIP code 02027 — Dedham

ZIP code 02027 serves Dedham, Massachusetts.

Postal code: 02027
Single source Value from one source, not cross-checked.
City: Dedham
County: Norfolk
State: Massachusetts
Country: United States
Coordinates: 42.1800, -71.0892 — 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/New_York (UTC−5 / UTC−4 DST)
Area codes: 781, 617, 339
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 02027 with another ZIP · ZIPs within 25 miles · distance from 02027

Climate — monthly normals

Warmest month Jul (avg high 82°F), coldest Jan (avg low 18°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	35	37	44	56	67	75	82	80	73	61	50	40
Avg low °F	18	20	27	38	48	58	64	63	56	44	34	25
Precip in	4.5	4.0	5.5	4.8	3.8	4.6	3.5	3.9	4.1	5.5	4.3	5.4

NOAA 1991–2020 climate normals from the nearest station: BLUE HILL COOP (2.5 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