Zip Code 01603 — Worcester, MA
01603 is a ZIP Code associated with Worcester, MA, located within Worcester. 01603 ranks #13 out of 85 ZIP codes in Worcester County by population (and #123 out of 539 in MA). The area supports an estimated population of 20,868 residents across Data Pending housing units, with a population density of 1,778.7 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (42.243730, -71.844290)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 01603 |
| Primary City | Worcester |
| State / Province | MA |
| County | Worcester |
| Total Population | 20,868 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 1,778.7 people/sq mi |
| Timezone | America/New_York |
How 01603 Compares
| Metric | ZIP 01603 | Worcester County | MA State Average |
|---|
| Population | 20,868 | 867,539 (Total) | 7,043,978 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 1,778.7 /sq mi | -- | -- |
| County Pop Rank | #13 of 85 | -- | -- |
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 →