| City: | Portland, Maine |
| County: | Cumberland County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:00:39 PM |
| Population: | No Population Data |
| Area Code: | 207 |
| Classification: | PO Box |
| Coordinates: | 43.6615, -70.2555 |
| Quick Link: |
ZIP code 04112 serves downtown Portland, Maine, primarily as a PO Box facility. The post office maintains 296 PO Boxes at the Congress Street location, serving both businesses and residents in the heart of Maine's largest city. While the ZIP itself contains only PO Boxes, it's surrounded by standard delivery ZIPs that provide street service to the downtown area.
The facility serves a diverse customer base, with 353 businesses and 296 residential box holders. Most delivery points are concentrated on Congress Street (240 records), the main commercial corridor running through Portland's downtown. The post office also serves House Island, a small island off the coast. This PO Box ZIP doesn't indicate limited service availability. Instead, it provides an alternative mailing address for downtown businesses and residents who prefer centralized mail pickup in a high-density urban environment.
Congress Street dominates as Portland's historic main commercial thoroughfare through downtown. The inclusion of House Island reflects the postal service's role in connecting coastal island communities to mainland services.
ZIP Code 04112 supports both business and residential activity. According to the Business Census (2024), there are 45 business establishments, employing about 1,210 people with an annual payroll of $96,989,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 929Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 45Source: CBP |
| 1st Quarter Payroll: | $28,298,000Source: CBP |
| Annual Payroll: | $96,989,000Source: CBP |
| # of Employees: | 1,210Source: CBP |
ZIP Code 04112 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 514,098 people, about 0.00% of whom live in ZIP Code 04112. 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: | 514,098Source: 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 04112 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.