First three digits · Maryland
ZIP Codes Starting with
66 ZIP codes start with 217, sorted at the Baltimore, MD (SCF 212) sectional center (USPS labeling list L005, effective October 1, 2026) in Maryland: 56 residential ZIP codes across 5 counties and 10 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 217 mean?
The first digit, 2, is one of ten national areas (District of Columbia, Maryland, North Carolina, South Carolina, Virginia and West Virginia). The first three, 217, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 217 to the Baltimore, MD (SCF 212) facility. The last two digits pick the delivery area. By residents, the largest town names among the 217 ZIP codes are Frederick, Hagerstown, Sykesville, Mount Airy, New Market and Middletown.
The same facility sorts 5 prefixes, 198 ZIP codes in all: 212, 215, 217, 219, 267.
Where are the 217 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 217
| County | ||||||
|---|---|---|---|---|---|---|
| 21701 | Frederick | Frederick County | 43,048 | 1,084 | $107k | $435k |
| 21702 | Frederick | Frederick County | 49,605 | 1,189 | $107k | $426k |
| 21703 | Frederick | Frederick County | 41,960 | 1,310 | $106k | $385k |
| 21704 | Frederick | Frederick County | 20,006 | 751 | $161k | $612k |
| 21705 | Frederick | Frederick County | 6 | 250 | – | – |
| 21709 | Frederick | Frederick County | PO Box or unique | – | – | – |
| 21710 | Adamstown | Frederick County | 4,661 | 159 | $164k | $591k |
| 21711 | Big Pool | Washington County | 929 | 38 | $91k | $311k |
| 21713 | Boonsboro | Washington County | 9,846 | 249 | $96k | $369k |
| 21714 | Braddock Heights | Frederick County | 95 | 213 | $162k | $416k |
| 21715 | Brownsville | Washington County | 20 | 81 | – | – |
| 21716 | Brunswick | Frederick County | 7,200 | 2,636 | $109k | $361k |
| 21717 | Buckeystown | Frederick County | 245 | 404 | $158k | $431k |
| 21718 | Burkittsville | Frederick County | 134 | 404 | $94k | $576k |
| 21719 | Cascade | Washington County | 1,178 | 285 | $66k | $214k |
| 21720 | Cavetown | Washington County | PO Box or unique | – | – | – |
| 21721 | Chewsville | Washington County | PO Box or unique | – | – | – |
| 21722 | Clear Spring | Washington County | 6,721 | 118 | $88k | $313k |
| 21723 | Cooksville | Howard County | 669 | 186 | $241k | $1.01M |
| 21727 | Emmitsburg | Frederick County | 6,052 | 193 | $95k | $331k |
| 21733 | Fairplay | Washington County | 1,275 | 218 | $110k | $292k |
| 21734 | Funkstown | Washington County | 1,076 | 2,228 | $61k | $278k |
| 21737 | Glenelg | Howard County | 2,474 | 483 | $250k+ | $996k |
| 21738 | Glenwood | Howard County | 3,696 | 530 | $250k+ | $914k |
| 21740 | Hagerstown | Washington County | 64,792 | 914 | $63k | $262k |
| 21741 | Hagerstown | Washington County | PO Box or unique | – | – | – |
| 21742 | Hagerstown | Washington County | 34,069 | 733 | $86k | $305k |
| 21746 | Hagerstown | Washington County | 2,361 | 8,977 | – | – |
| 21747 | Hagerstown | Washington County | PO Box or unique | – | – | – |
| 21749 | Hagerstown | Washington County | PO Box or unique | – | – | – |
| 21750 | Hancock | Washington County | 3,417 | 55 | $61k | $233k |
| 21754 | Ijamsville | Frederick County | 8,156 | 374 | $182k | $647k |
| 21755 | Jefferson | Frederick County | 5,909 | 172 | $137k | $530k |
| 21756 | Keedysville | Washington County | 3,640 | 156 | $102k | $413k |
| 21757 | Keymar | Carroll County | 2,671 | 76 | $101k | $466k |
| 21758 | Knoxville | Frederick County | 4,409 | 138 | $112k | $425k |
| 21759 | Ladiesburg | Frederick County | PO Box or unique | – | – | – |
| 21762 | Libertytown | Frederick County | 139 | 311 | – | – |
| 21765 | Lisbon | Howard County | PO Box or unique | – | – | – |
| 21766 | Little Orleans | Allegany County | 854 | 21 | $62k | $221k |
| 21767 | Maugansville | Washington County | 1,031 | 2,997 | $58k | $259k |
| 21769 | Middletown | Frederick County | 11,965 | 298 | $152k | $507k |
| 21770 | Monrovia | Frederick County | 8,751 | 764 | $184k | $633k |
| 21771 | Mount Airy | Frederick County | 33,031 | 369 | $157k | $556k |
| 21773 | Myersville | Frederick County | 5,826 | 161 | $162k | $544k |
| 21774 | New Market | Frederick County | 17,134 | 1,210 | $171k | $541k |
| 21775 | New Midway | Frederick County | PO Box or unique | – | – | – |
| 21776 | New Windsor | Carroll County | 6,261 | 177 | $133k | $462k |
| 21777 | Point Of Rocks | Frederick County | 2,462 | 2,242 | $160k | $481k |
| 21778 | Rocky Ridge | Frederick County | 745 | 41 | $77k | $382k |
| 21779 | Rohrersville | Washington County | 1,311 | 135 | – | $609k |
| 21780 | Sabillasville | Frederick County | 2,159 | 98 | $84k | $452k |
| 21781 | Saint James | Washington County | 25 | 104 | – | – |
| 21782 | Sharpsburg | Washington County | 3,704 | 126 | $94k | $312k |
| 21783 | Smithsburg | Washington County | 9,910 | 208 | $101k | $340k |
| 21784 | Sykesville | Carroll County | 39,258 | 699 | $139k | $492k |
| 21787 | Taneytown | Carroll County | 11,645 | 191 | $92k | $355k |
| 21788 | Thurmont | Frederick County | 11,654 | 178 | $99k | $379k |
| 21790 | Tuscarora | Frederick County | 170 | 36 | $78k | – |
| 21791 | Union Bridge | Frederick County | 5,340 | 116 | $93k | $380k |
| 21792 | Unionville | Frederick County | PO Box or unique | – | – | – |
| 21793 | Walkersville | Frederick County | 10,719 | 502 | $122k | $459k |
| 21794 | West Friendship | Howard County | 2,192 | 269 | $232k | $999k |
| 21795 | Williamsport | Washington County | 10,144 | 316 | $88k | $296k |
| 21797 | Woodbine | Howard County | 8,643 | 198 | $189k | $736k |
| 21798 | Woodsboro | Frederick County | 2,928 | 180 | $117k | $498k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.