| City: | Baltimore, Maryland |
| County: | Baltimore City County |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 9:59:28 PM |
| Population: | No Population Data |
| Area Codes: | 227 / 301 / 410 / 443 / 667 |
| Classification: | PO Box |
| Coordinates: | 39.2905, -76.6126 |
| Quick Link: |
ZIP code 21203 serves downtown Baltimore's historic Jonestown neighborhood. It's a PO Box-only ZIP covering just 0.03 square miles in the heart of the city. No one lives within this ZIP's boundaries, but 525 businesses operate here, employing 1,266 workers.
The post office at 900 E Fayette Street maintains 961 PO Boxes. These boxes serve the surrounding business district rather than residential customers. Downtown Baltimore has extensive street delivery through other ZIP codes, so this isn't a PO Box Only Zone. Businesses and organizations choose these boxes for mail privacy, a permanent address, or package receiving.
E Fayette Street dominates the address records with 253 entries using unit designations. The ZIP also includes a Smart Locker facility for package pickup. This reflects modern postal services adapted for urban commercial needs.
E Fayette Street is the post office location, with unit designations serving the business district.
ZIP Code 21203 supports both business and residential activity. According to the Business Census (2024), there are 27 business establishments, employing about 1,629 people with an annual payroll of $100,583,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,834Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 27Source: CBP |
| 1st Quarter Payroll: | $24,443,000Source: CBP |
| Annual Payroll: | $100,583,000Source: CBP |
| # of Employees: | 1,629Source: CBP |
ZIP Code 21203 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 21203. 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 21203 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.