Zip Code 01521 — Holland, MA
01521 is a ZIP Code associated with Holland, MA, located within Hampden. 01521 ranks #27 out of 39 ZIP codes in Hampden County by population (and #404 out of 539 in MA). The area supports an estimated population of 2,583 residents across Data Pending housing units, with a population density of 81.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.060120, -72.165920)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 01521 |
| Primary City | Holland |
| State / Province | MA |
| County | Hampden |
| Total Population | 2,583 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 81.2 people/sq mi |
| Timezone | America/New_York |
How 01521 Compares
| Metric | ZIP 01521 | Hampden County | MA State Average |
|---|
| Population | 2,583 | 462,835 (Total) | 7,043,978 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 81.2 /sq mi | -- | -- |
| County Pop Rank | #27 of 39 | -- | -- |
Nearby ZIP Codes
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 →