ZIP Codes Near 21778 — Rocky Ridge, MD
There are 64 ZIP codes within 25 miles of 21778, covering 57 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.
Cities within 25 miles
| City | Distance | ZIP codes |
|---|---|---|
| Keymar, MD | 4.3 mi | 1 |
| Thurmont, MD | 4.6 mi | 1 |
| Emmitsburg, MD | 5.0 mi | 1 |
| Woodsboro, MD | 5.7 mi | 1 |
| Sabillasville, MD | 8.1 mi | 1 |
| Walkersville, MD | 8.7 mi | 1 |
| Union Bridge, MD | 9.5 mi | 1 |
| Taneytown, MD | 9.6 mi | 1 |
| Libertytown, MD | 10.5 mi | 1 |
| Cascade, MD | 10.6 mi | 1 |
| Fairfield, PA | 10.9 mi | 1 |
| Frederick, MD | 11.3 mi | 5 |
| Blue Ridge Summit, PA | 11.6 mi | 1 |
| Smithsburg, MD | 12.0 mi | 1 |
| Myersville, MD | 12.7 mi | 1 |
| Rouzerville, PA | 12.9 mi | 1 |
| New Windsor, MD | 14.1 mi | 1 |
| New Market, MD | 14.6 mi | 1 |
| Littlestown, PA | 15.4 mi | 1 |
| Gettysburg, PA | 15.8 mi | 1 |
| Westminster, MD | 16.4 mi | 2 |
| Waynesboro, PA | 16.7 mi | 1 |
| Middletown, MD | 16.9 mi | 1 |
| Braddock Heights, MD | 16.9 mi | 1 |
| Mcknightstown, PA | 17.5 mi | 1 |
| Hagerstown, MD | 17.6 mi | 3 |
| Mount Airy, MD | 18.0 mi | 1 |
| Quincy, PA | 18.0 mi | 1 |
| Monrovia, MD | 18.7 mi | 1 |
| Mont Alto, PA | 18.7 mi | 1 |
| Boonsboro, MD | 18.7 mi | 1 |
| Orrtanna, PA | 19.0 mi | 1 |
| South Mountain, PA | 19.2 mi | 1 |
| Ijamsville, MD | 19.3 mi | 1 |
| Funkstown, MD | 19.5 mi | 1 |
| Buckeystown, MD | 19.8 mi | 1 |
| Fayetteville, PA | 21.3 mi | 1 |
| Mcsherrystown, PA | 21.4 mi | 1 |
| Rohrersville, MD | 21.4 mi | 1 |
| Jefferson, MD | 21.5 mi | 1 |
| State Line, PA | 21.5 mi | 1 |
| Arendtsville, PA | 21.6 mi | 1 |
| Burkittsville, MD | 21.8 mi | 1 |
| Keedysville, MD | 22.2 mi | 1 |
| Maugansville, MD | 22.5 mi | 1 |
| Hanover, PA | 22.5 mi | 1 |
| Saint James, MD | 22.7 mi | 1 |
| Adamstown, MD | 22.9 mi | 1 |
| Fairplay, MD | 22.9 mi | 1 |
| Biglerville, PA | 23.0 mi | 1 |
| Damascus, MD | 23.3 mi | 1 |
| New Oxford, PA | 23.4 mi | 1 |
| Brownsville, MD | 23.8 mi | 1 |
| Woodbine, MD | 24.2 mi | 1 |
| Finksburg, MD | 24.2 mi | 1 |
| Sykesville, MD | 24.5 mi | 1 |
| Clarksburg, MD | 24.8 mi | 1 |
All 64 ZIP codes, by distance
| ZIP | City | County | Distance |
|---|---|---|---|
| 21757 | Keymar, MD | Carroll | 4.3 mi |
| 21788 | Thurmont, MD | Frederick | 4.6 mi |
| 21727 | Emmitsburg, MD | Frederick | 5.0 mi |
| 21798 | Woodsboro, MD | Frederick | 5.7 mi |
| 21780 | Sabillasville, MD | Frederick | 8.1 mi |
| 21793 | Walkersville, MD | Frederick | 8.7 mi |
| 21791 | Union Bridge, MD | Frederick | 9.5 mi |
| 21787 | Taneytown, MD | Carroll | 9.6 mi |
| 21762 | Libertytown, MD | Frederick | 10.5 mi |
| 21719 | Cascade, MD | Washington | 10.6 mi |
| 17320 | Fairfield, PA | Adams | 10.9 mi |
| 21702 | Frederick, MD | Frederick | 11.3 mi |
| 17214 | Blue Ridge Summit, PA | Franklin | 11.6 mi |
| 21701 | Frederick, MD | Frederick | 11.6 mi |
| 21783 | Smithsburg, MD | Washington | 12.0 mi |
| 21773 | Myersville, MD | Frederick | 12.7 mi |
| 17250 | Rouzerville, PA | Franklin | 12.9 mi |
| 21776 | New Windsor, MD | Carroll | 14.1 mi |
| 21774 | New Market, MD | Frederick | 14.6 mi |
| 21705 | Frederick, MD | Frederick | 14.8 mi |
| 17340 | Littlestown, PA | Adams | 15.4 mi |
| 17325 | Gettysburg, PA | Adams | 15.8 mi |
| 21158 | Westminster, MD | Carroll | 16.4 mi |
| 17268 | Waynesboro, PA | Franklin | 16.7 mi |
| 21769 | Middletown, MD | Frederick | 16.9 mi |
| 21714 | Braddock Heights, MD | Frederick | 16.9 mi |
| 17343 | Mcknightstown, PA | Adams | 17.5 mi |
| 21742 | Hagerstown, MD | Washington | 17.6 mi |
| 21771 | Mount Airy, MD | Frederick | 18.0 mi |
| 17247 | Quincy, PA | Franklin | 18.0 mi |
| 21704 | Frederick, MD | Frederick | 18.4 mi |
| 21703 | Frederick, MD | Frederick | 18.4 mi |
| 21770 | Monrovia, MD | Frederick | 18.7 mi |
| 17237 | Mont Alto, PA | Franklin | 18.7 mi |
| 21713 | Boonsboro, MD | Washington | 18.7 mi |
| 17353 | Orrtanna, PA | Adams | 19.0 mi |
| 17261 | South Mountain, PA | Franklin | 19.2 mi |
| 21754 | Ijamsville, MD | Frederick | 19.3 mi |
| 21157 | Westminster, MD | Carroll | 19.5 mi |
| 21734 | Funkstown, MD | Washington | 19.5 mi |
| 21717 | Buckeystown, MD | Frederick | 19.8 mi |
| 21746 | Hagerstown, MD | Washington | 20.3 mi |
| 17222 | Fayetteville, PA | Franklin | 21.3 mi |
| 21740 | Hagerstown, MD | Washington | 21.4 mi |
| 17344 | Mcsherrystown, PA | Adams | 21.4 mi |
| 21779 | Rohrersville, MD | Washington | 21.4 mi |
| 21755 | Jefferson, MD | Frederick | 21.5 mi |
| 17263 | State Line, PA | Franklin | 21.5 mi |
| 17303 | Arendtsville, PA | Adams | 21.6 mi |
| 21718 | Burkittsville, MD | Frederick | 21.8 mi |
| 21756 | Keedysville, MD | Washington | 22.2 mi |
| 21767 | Maugansville, MD | Washington | 22.5 mi |
| 17331 | Hanover, PA | York | 22.5 mi |
| 21781 | Saint James, MD | Washington | 22.7 mi |
| 21710 | Adamstown, MD | Frederick | 22.9 mi |
| 21733 | Fairplay, MD | Washington | 22.9 mi |
| 17307 | Biglerville, PA | Adams | 23.0 mi |
| 20872 | Damascus, MD | Montgomery | 23.3 mi |
| 17350 | New Oxford, PA | Adams | 23.4 mi |
| 21715 | Brownsville, MD | Washington | 23.8 mi |
| 21797 | Woodbine, MD | Howard | 24.2 mi |
| 21048 | Finksburg, MD | Carroll | 24.2 mi |
| 21784 | Sykesville, MD | Carroll | 24.5 mi |
| 20871 | Clarksburg, MD | Montgomery | 24.8 mi |
How this list is calculated
Each ZIP code is represented by a single centroid point, and distance is measured great-circle from the centroid of 21778 to each of the others. Two consequences worth knowing about:
- Large rural ZIPs distort the picture. A ZIP covering 400 square miles has a centroid that may be 15 miles from its own nearest edge, so a code listed as 30 miles away can begin much closer.
- These are not driving distances. A river, a bay, or a mountain range makes a 12-mile straight line into a 40-minute drive. For service-area planning, use this as a first cut and check the routes.
If you need this programmatically — for a store locator, a delivery zone, or a territory map — the radius endpoint returns the same data as JSON, with an arbitrary radius and optional state filtering.
Back to 21778
County, time zone, area codes, and the full ZIP+4 lookup for any address in Rocky Ridge.