| City: | Portland, Maine |
| County: | Cumberland County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:55:48 PM |
| Population: | No Population Data |
| Area Code: | 207 |
| Classification: | PO Box |
| Coordinates: | 43.6615, -70.2555 |
| Quick Link: |
ZIP code 04104 serves Portland's Parkside neighborhood through a PO Box-only facility maintaining 736 boxes. This postal designation doesn't mean residents lack street delivery. Most addresses in the area receive regular carrier service through neighboring ZIP 04101, while 04104 exclusively handles PO Box mail for those who need it.
The post office supports 649 registered businesses alongside residential customers. Forest Avenue runs through the service area, connecting Parkside to downtown Portland just 0.1 miles south and the West Bayside neighborhood immediately adjacent. The facility operates as a specialized service point within Portland's broader delivery network rather than serving an isolated community.
Forest Avenue serves as the primary street reference with 215 unit-based delivery points, connecting Parkside to Portland's broader urban grid.
ZIP Code 04104 supports both business and residential activity. According to the Business Census (2024), there are 39 business establishments, employing about 1,755 people with an annual payroll of $153,721,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 3,337Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 39Source: CBP |
| 1st Quarter Payroll: | $45,462,000Source: CBP |
| Annual Payroll: | $153,721,000Source: CBP |
| # of Employees: | 1,755Source: CBP |
ZIP Code 04104 is located in Cumberland County, Maine, within the Portland-South Portland, ME Metropolitan Statistical Area (CBSA 38860) and Maine's 1st Congressional District. This Metro area has a population of 557,764 people, about 0.00% of whom live in ZIP Code 04104. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Portland-South Portland, MESource: Census |
| CBSA Number: | 38860Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 557,764Source: Census |
| MSA: | Portland, ME MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 3285.52 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2360545Source: Census |
| Place Name: | Portland city; MaineSource: Census |
We could not locate which school district 04104 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 January 1, 2026.