ZIP Codes Near 21791 — Union Bridge, MD
There are 64 ZIP codes within 25 miles of 21791, covering 59 cities and towns. Distances are straight-line between ZIP centroids, not driving distance.
Cities within 25 miles
| City | Distance | ZIP codes |
|---|---|---|
| New Windsor, MD | 4.7 mi | 1 |
| Libertytown, MD | 5.4 mi | 1 |
| Keymar, MD | 5.5 mi | 1 |
| Woodsboro, MD | 6.0 mi | 1 |
| Taneytown, MD | 8.9 mi | 1 |
| Walkersville, MD | 9.1 mi | 1 |
| Rocky Ridge, MD | 9.5 mi | 1 |
| Frederick, MD | 10.3 mi | 5 |
| Mount Airy, MD | 10.3 mi | 1 |
| New Market, MD | 10.5 mi | 1 |
| Westminster, MD | 10.9 mi | 2 |
| Emmitsburg, MD | 12.7 mi | 1 |
| Thurmont, MD | 12.9 mi | 1 |
| Monrovia, MD | 13.7 mi | 1 |
| Sykesville, MD | 15.1 mi | 1 |
| Finksburg, MD | 15.1 mi | 1 |
| Littlestown, PA | 15.3 mi | 1 |
| Ijamsville, MD | 15.7 mi | 1 |
| Woodbine, MD | 15.8 mi | 1 |
| Damascus, MD | 17.4 mi | 1 |
| Cooksville, MD | 17.6 mi | 1 |
| Sabillasville, MD | 17.6 mi | 1 |
| Fairfield, PA | 19.0 mi | 1 |
| Hampstead, MD | 19.0 mi | 1 |
| Buckeystown, MD | 19.2 mi | 1 |
| Braddock Heights, MD | 19.5 mi | 1 |
| Myersville, MD | 19.5 mi | 1 |
| Gettysburg, PA | 19.8 mi | 1 |
| Marriottsville, MD | 20.0 mi | 1 |
| Cascade, MD | 20.1 mi | 1 |
| Glenwood, MD | 20.1 mi | 1 |
| Clarksburg, MD | 20.2 mi | 1 |
| Mcsherrystown, PA | 20.2 mi | 1 |
| Hanover, PA | 20.4 mi | 1 |
| Upperco, MD | 20.4 mi | 1 |
| West Friendship, MD | 20.4 mi | 1 |
| Reisterstown, MD | 20.5 mi | 1 |
| Glyndon, MD | 20.6 mi | 1 |
| Blue Ridge Summit, PA | 20.7 mi | 1 |
| Manchester, MD | 20.7 mi | 1 |
| Smithsburg, MD | 21.1 mi | 1 |
| Middletown, MD | 21.2 mi | 1 |
| Gaithersburg, MD | 21.6 mi | 1 |
| Glenelg, MD | 21.8 mi | 1 |
| Adamstown, MD | 22.0 mi | 1 |
| Rouzerville, PA | 22.4 mi | 1 |
| Woodstock, MD | 22.5 mi | 1 |
| Randallstown, MD | 23.1 mi | 1 |
| Owings Mills, MD | 23.2 mi | 1 |
| Germantown, MD | 23.3 mi | 1 |
| Glenville, PA | 23.4 mi | 1 |
| Dayton, MD | 23.5 mi | 1 |
| Mcknightstown, PA | 23.8 mi | 1 |
| Butler, MD | 23.9 mi | 1 |
| Jefferson, MD | 23.9 mi | 1 |
| Barnesville, MD | 24.2 mi | 1 |
| Brookeville, MD | 24.3 mi | 1 |
| Ellicott City, MD | 24.5 mi | 1 |
| New Oxford, PA | 24.6 mi | 1 |
All 64 ZIP codes, by distance
| ZIP | City | County | Distance |
|---|---|---|---|
| 21776 | New Windsor, MD | Carroll | 4.7 mi |
| 21762 | Libertytown, MD | Frederick | 5.4 mi |
| 21757 | Keymar, MD | Carroll | 5.5 mi |
| 21798 | Woodsboro, MD | Frederick | 6.0 mi |
| 21787 | Taneytown, MD | Carroll | 8.9 mi |
| 21793 | Walkersville, MD | Frederick | 9.1 mi |
| 21778 | Rocky Ridge, MD | Frederick | 9.5 mi |
| 21701 | Frederick, MD | Frederick | 10.3 mi |
| 21771 | Mount Airy, MD | Frederick | 10.3 mi |
| 21774 | New Market, MD | Frederick | 10.5 mi |
| 21158 | Westminster, MD | Carroll | 10.9 mi |
| 21157 | Westminster, MD | Carroll | 11.0 mi |
| 21727 | Emmitsburg, MD | Frederick | 12.7 mi |
| 21788 | Thurmont, MD | Frederick | 12.9 mi |
| 21770 | Monrovia, MD | Frederick | 13.7 mi |
| 21705 | Frederick, MD | Frederick | 15.1 mi |
| 21702 | Frederick, MD | Frederick | 15.1 mi |
| 21784 | Sykesville, MD | Carroll | 15.1 mi |
| 21048 | Finksburg, MD | Carroll | 15.1 mi |
| 17340 | Littlestown, PA | Adams | 15.3 mi |
| 21754 | Ijamsville, MD | Frederick | 15.7 mi |
| 21797 | Woodbine, MD | Howard | 15.8 mi |
| 21704 | Frederick, MD | Frederick | 16.6 mi |
| 20872 | Damascus, MD | Montgomery | 17.4 mi |
| 21723 | Cooksville, MD | Howard | 17.6 mi |
| 21780 | Sabillasville, MD | Frederick | 17.6 mi |
| 17320 | Fairfield, PA | Adams | 19.0 mi |
| 21074 | Hampstead, MD | Carroll | 19.0 mi |
| 21717 | Buckeystown, MD | Frederick | 19.2 mi |
| 21703 | Frederick, MD | Frederick | 19.3 mi |
| 21714 | Braddock Heights, MD | Frederick | 19.5 mi |
| 21773 | Myersville, MD | Frederick | 19.5 mi |
| 17325 | Gettysburg, PA | Adams | 19.8 mi |
| 21104 | Marriottsville, MD | Howard | 20.0 mi |
| 21719 | Cascade, MD | Washington | 20.1 mi |
| 21738 | Glenwood, MD | Howard | 20.1 mi |
| 20871 | Clarksburg, MD | Montgomery | 20.2 mi |
| 17344 | Mcsherrystown, PA | Adams | 20.2 mi |
| 17331 | Hanover, PA | York | 20.4 mi |
| 21155 | Upperco, MD | Baltimore | 20.4 mi |
| 21794 | West Friendship, MD | Howard | 20.4 mi |
| 21136 | Reisterstown, MD | Baltimore | 20.5 mi |
| 21071 | Glyndon, MD | Baltimore | 20.6 mi |
| 17214 | Blue Ridge Summit, PA | Franklin | 20.7 mi |
| 21102 | Manchester, MD | Carroll | 20.7 mi |
| 21783 | Smithsburg, MD | Washington | 21.1 mi |
| 21769 | Middletown, MD | Frederick | 21.2 mi |
| 20882 | Gaithersburg, MD | Montgomery | 21.6 mi |
| 21737 | Glenelg, MD | Howard | 21.8 mi |
| 21710 | Adamstown, MD | Frederick | 22.0 mi |
| 17250 | Rouzerville, PA | Franklin | 22.4 mi |
| 21163 | Woodstock, MD | Baltimore | 22.5 mi |
| 21133 | Randallstown, MD | Baltimore | 23.1 mi |
| 21117 | Owings Mills, MD | Baltimore | 23.2 mi |
| 20876 | Germantown, MD | Montgomery | 23.3 mi |
| 17329 | Glenville, PA | York | 23.4 mi |
| 21036 | Dayton, MD | Howard | 23.5 mi |
| 17343 | Mcknightstown, PA | Adams | 23.8 mi |
| 21023 | Butler, MD | Baltimore | 23.9 mi |
| 21755 | Jefferson, MD | Frederick | 23.9 mi |
| 20838 | Barnesville, MD | Montgomery | 24.2 mi |
| 20833 | Brookeville, MD | Montgomery | 24.3 mi |
| 21042 | Ellicott City, MD | Howard | 24.5 mi |
| 17350 | New Oxford, PA | Adams | 24.6 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 21791 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 21791
County, time zone, area codes, and the full ZIP+4 lookup for any address in Union Bridge.