| City: | Portland, Maine |
| Names to Avoid: | Union Mutual Life Ins |
| County: | Cumberland County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 8:00:41 PM |
| Population: | No Population Data |
| Area Code: | 207 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 43.6615, -70.2555 |
| Quick Link: |
Unum, formerly Union Mutual Life Insurance, operates under dedicated ZIP code 04123 in Portland, Cumberland County, Maine. The company's Portland office is located at 2211 Congress Street in a distinctive modernist building designed by Hugh Stubbins and Associates, completed in 1971. The 112-foot-high structure is located four miles west of downtown Portland. Unum is now a Fortune 500 company and remains one of the largest disability insurance providers in the United States.
Postal records show 3 delivery codes routing to Unum on Congress Street. This ZIP has been active since before October 2004. Census demographic data is not available for this commercial designation. Portland is the valid mailing city.
Buildings registered in the USPS ZIP+4 database with designated codes for direct mail delivery.
ZIP Code 04123 is assigned to a single organization or institution. Detailed business demographics are not published for unique ZIP Codes.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 0Source: 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 04123 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 04123. 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 04123 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.