| City: | Baltimore, Maryland |
| County: | Baltimore City County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 10:00:08 PM |
| Population: | No Population Data |
| Area Codes: | 227 / 301 / 410 / 443 / 667 |
| Classification: | PO Box |
| Coordinates: | 39.2905, -76.6125 |
| Quick Link: |
Despite its P classification (meaning the ZIP itself contains only PO Boxes), residents aren't limited to box-only service. The facility supports one rural carrier route serving S Highland Ave, and the surrounding area receives standard street delivery through neighboring ZIP 21224. This setup is common in urban areas where a PO Box ZIP operates alongside conventional carrier routes, giving customers flexibility in how they receive mail.
With just one street served directly by this ZIP, S Highland Ave represents a minimal street delivery footprint. The southern directional prefix indicates this is part of a larger street grid that extends into neighboring delivery areas.
ZIP Code 21281 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 157Source: 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 21281 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 2,710,489 people, about 0.00% of whom live in ZIP Code 21281. 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: | 2,710,489Source: 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 21281 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.