| City: | Baltimore, Maryland |
| Names to Avoid: | Baltimore Sunpapers |
| County: | Baltimore City County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:22:31 AM |
| Population: | No Population Data |
| Area Codes: | 227 / 301 / 410 / 443 / 667 |
| Classification: | Unique [Company/Government] |
| Coordinates: | 39.2955, -76.6120 |
| Quick Link: |
The Baltimore Sunpapers operates under dedicated ZIP code 21278 in Baltimore's historic Mount Vernon neighborhood. The Baltimore Sun, founded in 1837 by Arunah S. Abell, is the largest general-circulation daily newspaper in Maryland and one of America's oldest continuously published dailies. The Sunpapers designation refers to the umbrella term for The Sun and its associated publications. Newspapers traditionally maintained unique ZIP codes to handle subscription services, advertising correspondence, and reader communications. This postal designation has served the newspaper for over two decades.
The compact 0.01-square-mile boundary in Central Baltimore reflects a focused corporate mail operation. Census employment data shows 16 workers at 4 establishments. Baltimore serves as the valid mailing city for this designation.
| Establishments: | 4 |
| Employment: | 16 |
ZIP Code 21278 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 15 people with an annual payroll of $566,000.
| # 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: | 4Source: CBP |
| 1st Quarter Payroll: | $165,000Source: CBP |
| Annual Payroll: | $566,000Source: CBP |
| # of Employees: | 15Source: CBP |
ZIP Code 21278 is located in Baltimore City County, Maryland, within the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area (CBSA 12580) and Maryland's 7th Congressional District. This Metro area has a population of 2,839,409 people, about 0.00% of whom live in ZIP Code 21278. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Baltimore-Columbia-Towson, MDSource: Census |
| CBSA Number: | 12580Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 2,839,409Source: Census |
| MSA: | Washington-Baltimore, DC-MD-VA-WV CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 07Source: USPS |
| Congressional Land Area: | 488.03 sq miSource: Census |
| PMSA: | Baltimore, MD PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2404000Source: Census |
| Place Name: | Baltimore city; MarylandSource: Census |
We could not locate which school district 21278 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.