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Zip Code 02645 — Harwich, MA

02645 is a ZIP Code associated with Harwich, MA, located within Barnstable. The postal region supports an estimated population of 11,288 residents across Data Pending housing units, with a population density of 257.5 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.703520, -70.062150)

Data Metric	Local Statistic
Postal / Zip Code	02645
Primary City	Harwich
State / Province	MA
County	Barnstable
Total Population	11,288
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	257.5 people/sq mi
Timezone	America/New_York

How 02645 Compares

Metric	ZIP 02645	Barnstable County	MA State Average
Population	11,288	233,025	7,043,978
Median Income	Data Pending	N/A	N/A
Population Density	257.5 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 02646	Harwich Port	2.3 mi	1,846	N/A
Zip 02659	South Chatham	2.5 mi	1,137	N/A
Zip 02631	Brewster	3.0 mi	10,061	N/A
Zip 02671	West Harwich	3.4 mi	818	N/A
Zip 02639	Dennis Port	4.6 mi	3,808	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →