| City: | Amherst, Massachusetts |
| County: | Hampshire County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 7:44:48 PM |
| Population: | No Population Data |
| Area Code: | 413 |
| Classification: | PO Box |
| Coordinates: | 42.3736, -72.5209 |
| Quick Link: |
ZIP code 01004 is a PO Box-only ZIP serving Amherst, Massachusetts. It doesn't cover a residential area. Instead, it exists solely for the 448 PO Boxes at the local post office. This makes the zero population figure make sense: nobody lives within this ZIP's tiny 0.03 square mile boundary.
Amherst has a separate standard ZIP code (01002) that handles residential and business delivery. The 01004 ZIP exists as an administrative designation for PO Box service only. Residents and businesses who want a PO Box get an 01004 address, while those receiving street delivery use 01002.
The two street addresses in this ZIP's records, University Drive and N Pleasant Street, are actually the post office's physical location. These appear because of PO Box Street Addressing (PBSA), a USPS program that lets PO Box holders use the post office's street address with their box number. So "123 University Dr #456" and "PO Box 456, Amherst MA 01004" deliver to the same box.
With 215 business delivery points and 448 total PO Boxes, about half the boxes serve commercial customers. This isn't surprising for a college town. UMass Amherst brings thousands of students, faculty, and staff who may prefer a PO Box over campus mail or temporary housing addresses.
Both streets are the post office's physical address used for PO Box Street Addressing.
ZIP Code 01004 supports both business and residential activity. According to the Business Census (2024), there are 5 business establishments, employing about 33 people with an annual payroll of $1,815,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 652Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 5Source: CBP |
| 1st Quarter Payroll: | $262,000Source: CBP |
| Annual Payroll: | $1,815,000Source: CBP |
| # of Employees: | 33Source: CBP |
ZIP Code 01004 is located in Hampshire County, Massachusetts, within the Amherst Town-Northampton, MA Metropolitan Statistical Area (CBSA 11200) and Massachusetts's 2nd Congressional District. This Metro area has a population of 0 people, about 0.00% of whom live in ZIP Code 01004. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Amherst Town-Northampton, MASource: Census |
| CBSA Number: | 11200Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Springfield, MA MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 1628 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 01004 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.