ZIP code · South Harwich · Massachusetts · United States

ZIP code 02661 — South Harwich

ZIP code 02661 serves South Harwich, Massachusetts.

Postal code: 02661
Single source Value from one source, not cross-checked.
City: South Harwich
County: Barnstable
State: Massachusetts
Country: United States
Coordinates: 41.6862, -70.0329 — precision precise (locality)
View on OpenStreetMap
USDA hardiness zone: 7b (5 to 10 °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: 774, 508 (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 02661 with another ZIP · ZIPs within 25 miles · distance from 02661

Climate — monthly normals

Warmest month Jul (avg high 79°F), coldest Jan (avg low 26°F).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high °F	39	40	44	52	62	72	79	78	71	61	52	44
Avg low °F	26	26	31	39	48	57	64	64	58	47	39	31
Precip in	3.8	3.6	4.4	4.0	3.3	3.0	2.8	3.0	3.6	4.2	4.5	5.0

NOAA 1991–2020 climate normals from the nearest station: CHATHAM MUNI AP (2.1 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