Home > MA > Middlesex County > Ashland > Zip 01721

Zip Code 01721 — Ashland, MA

01721 is a ZIP Code associated with Ashland, MA, located within Middlesex. The postal region supports an estimated population of 18,873 residents across Data Pending housing units, with a population density of 590.6 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.257260, -71.468670)

Data Metric	Local Statistic
Postal / Zip Code	01721
Primary City	Ashland
State / Province	MA
County	Middlesex
Total Population	18,873
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	590.6 people/sq mi
Timezone	America/New_York

How 01721 Compares

Metric	ZIP 01721	Middlesex County	MA State Average
Population	18,873	1,629,277	7,043,978
Median Income	Data Pending	N/A	N/A
Population Density	590.6 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 01702	Framingham	2.5 mi	39,789	N/A
Zip 01745	Fayville	2.9 mi	586	N/A
Zip 01748	Hopkinton	4.2 mi	19,358	N/A
Zip 01746	Holliston	4.3 mi	15,094	N/A
Zip 01772	Southborough	4.4 mi	9,907	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 →