| City: | Andover, Massachusetts |
| Names to Avoid: | Internal Revenue Service |
| County: | Essex County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:08:55 PM |
| Population: | No Population Data |
| Area Codes: | 351 / 508 / 978 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 42.6495, -71.1838 |
| Quick Link: |
The Internal Revenue Service Andover Campus operates under dedicated ZIP code 05501 at 310 Lowell Street in Andover, Essex County, Massachusetts. At its peak, the facility employed 3,500 people processing paper tax returns. The campus stopped return processing in September 2009 as electronic filing increased, and now functions primarily as a taxpayer assistance center with approximately 550 employees.
Postal records show 6 delivery codes routing to Department of the Treasury, Internal Revenue Service, and related designations on Lowell Street. This ZIP has been active since before October 2004. Census demographic data is not available for this commercial designation. Andover is the valid mailing city.
| Residential: | 0 |
| Business: | 1 |
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 05501 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes. USPS data shows 0 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 1,065Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 05501 is located in Essex County, Massachusetts, within the Boston-Cambridge-Newton, MA-NH Metropolitan Statistical Area (CBSA 14460) and Massachusetts's 6th Congressional District. This Metro area has a population of 4,552,402 people, about 0.00% of whom live in ZIP Code 05501, and is subdivided into the Cambridge-Newton-Framingham, MA division. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Boston-Cambridge-Newton, MA-NHSource: Census |
| CBSA Number: | 14460Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | Cambridge-Newton-Framingham, MA (CBSA Div 15764)Source: Census |
| CBSA Population: | 4,552,402Source: Census |
| MSA: | Boston-Worcester-Lawrence, MA-NH-ME-CT CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 06Source: USPS |
| Congressional Land Area: | 526.79 sq miSource: Census |
| PMSA: | Lawrence, MA-NH PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2501430Source: Census |
| Place Name: | Andover CDP; MassachusettsSource: Census |
We could not locate which school district 05501 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 March 1, 2026.