Bölge listesi
- 21230 - Baltimore, Baltimore City, Maryland
- 21231 - Baltimore, Baltimore City, Maryland
- 21233 - Baltimore, Baltimore City, Maryland
- 21239 - Baltimore, Baltimore City, Maryland
- 21270 - Baltimore, Baltimore City, Maryland
- 21281 - Baltimore, Baltimore City, Maryland
- 21297 - Baltimore, Baltimore City, Maryland
- 21263 - Bank of America, Baltimore, Baltimore City, Maryland
- 21273 - Bank of America, Baltimore, Baltimore City, Maryland
- 21274 - Bank of America, Baltimore, Baltimore City, Maryland
- 21280 - Bank of America, Baltimore, Baltimore City, Maryland
- 21283 - Bank One, Baltimore, Baltimore City, Maryland
- 21298 - Firms-business Reply, Baltimore, Baltimore City, Maryland
- 21288 - Household Bank, Baltimore, Baltimore City, Maryland
- 21287 - Johns Hopkins Hospital, Baltimore, Baltimore City, Maryland
- 21251 - Morgan State University, Baltimore, Baltimore City, Maryland
- 21264 - MT Bank, Baltimore, Baltimore City, Maryland
- 21241 - Social Security Admin, Baltimore, Baltimore City, Maryland
- 21290 - Social Security Admin, Baltimore, Baltimore City, Maryland
- 21235 - Social Security Administrat, Baltimore, Baltimore City, Maryland