Maidenhead grid
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75 active licensees across 20 ZIP codes centered in this square. Each dot is a ZIP code, sized by licensee count.
ZIP codes
| ZIP | City | Hams |
|---|---|---|
| 21230 | Baltimore, MD | 51 |
| 21231 | Baltimore, MD | 19 |
| 21203 | Baltimore, MD | 3 |
| 21270 | Baltimore, MD | 1 |
| 21281 | Baltimore, MD | 1 |
| 21223 | Baltimore, MD | 0 |
| 21233 | Baltimore, MD | 0 |
| 21235 | Baltimore, MD | 0 |
| 21241 | Baltimore, MD | 0 |
| 21263 | Baltimore, MD | 0 |
| 21264 | Baltimore, MD | 0 |
| 21273 | Baltimore, MD | 0 |
| 21275 | Baltimore, MD | 0 |
| 21278 | Baltimore, MD | 0 |
| 21279 | Baltimore, MD | 0 |
| 21280 | Baltimore, MD | 0 |
| 21288 | Baltimore, MD | 0 |
| 21289 | Baltimore, MD | 0 |
| 21297 | Baltimore, MD | 0 |
| 21298 | Baltimore, MD | 0 |