212
- 21201 Baltimore
- 21202 Baltimore
- 21204 Towson
- 21205 Baltimore
- 21206 Baltimore
- 21207 Gwynn Oak
- 21208 Pikesville
- 21209 Baltimore
- 21210 Baltimore
- 21211 Baltimore
- 21212 Baltimore
- 21213 Baltimore
- 21214 Baltimore
- 21215 Baltimore
- 21216 Baltimore
- 21217 Baltimore
- 21218 Baltimore
- 21219 Sparrows Point
- 21220 Middle River
- 21221 Essex
- 21222 Dundalk
- 21223 Baltimore
- 21224 Baltimore
- 21225 Brooklyn
- 21226 Curtis Bay
- 21227 Halethorpe
- 21228 Catonsville
- 21229 Baltimore
- 21230 Baltimore
- 21231 Baltimore
- 21234 Parkville
- 21236 Nottingham
- 21237 Rosedale
- 21239 Baltimore
- 21240 Baltimore
- 21244 Windsor Mill
- 21250 Baltimore
- 21251 Baltimore
- 21252 Towson
- 21286 Towson