First three digits · Maryland
ZIP Codes Starting with
34 ZIP codes start with 211, sorted at the Linthicum, MD (SCF 210) sectional center (USPS labeling list L005, effective October 1, 2026) in Maryland: 30 residential ZIP codes across 5 counties and 4 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 211 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, 211, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 211 to the Linthicum, MD (SCF 210) facility. The last two digits pick the delivery area. By residents, the largest town names among the 211 ZIP codes are Owings Mills, Pasadena, Westminster, Severn, Odenton and Reisterstown.
The same facility sorts 3 prefixes, 100 ZIP codes in all: 210, 211, 214.
Where are the 211 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 211
| County | ||||||
|---|---|---|---|---|---|---|
| 21102 | Manchester | Carroll County | 12,162 | 299 | $135k | $393k |
| 21104 | Marriottsville | Howard County | 6,052 | 355 | $192k | $680k |
| 21105 | Maryland Line | Baltimore County | 36 | 419 | – | – |
| 21106 | Mayo | Anne Arundel County | PO Box or unique | – | – | – |
| 21108 | Millersville | Anne Arundel County | 18,643 | 1,444 | $151k | $555k |
| 21111 | Monkton | Baltimore County | 4,714 | 133 | $136k | $607k |
| 21113 | Odenton | Anne Arundel County | 36,705 | 2,455 | $126k | $432k |
| 21114 | Crofton | Anne Arundel County | 25,590 | 4,428 | $141k | $490k |
| 21117 | Owings Mills | Baltimore County | 62,816 | 2,114 | $102k | $387k |
| 21120 | Parkton | Baltimore County | 7,440 | 177 | $162k | $581k |
| 21122 | Pasadena | Anne Arundel County | 61,566 | 1,962 | $128k | $426k |
| 21123 | Pasadena | Anne Arundel County | PO Box or unique | – | – | – |
| 21128 | Perry Hall | Baltimore County | 15,501 | 2,277 | $128k | $450k |
| 21130 | Perryman | Harford County | 112 | 204 | $17k | – |
| 21131 | Phoenix | Baltimore County | 7,141 | 340 | $198k | $686k |
| 21132 | Pylesville | Harford County | 3,160 | 141 | $132k | $486k |
| 21133 | Randallstown | Baltimore County | 31,398 | 3,504 | $81k | $323k |
| 21136 | Reisterstown | Baltimore County | 32,088 | 571 | $119k | $422k |
| 21139 | Riderwood | Baltimore County | PO Box or unique | – | – | – |
| 21140 | Riva | Anne Arundel County | 4,417 | 3,117 | $170k | $635k |
| 21144 | Severn | Anne Arundel County | 37,118 | 2,248 | $137k | $484k |
| 21146 | Severna Park | Anne Arundel County | 28,591 | 2,820 | $172k | $660k |
| 21150 | Simpsonville | Howard County | PO Box or unique | – | – | – |
| 21152 | Sparks Glencoe | Baltimore County | 6,459 | 267 | $121k | $496k |
| 21153 | Stevenson | Baltimore County | 456 | 159 | $220k | $902k |
| 21154 | Street | Harford County | 6,544 | 166 | $98k | $455k |
| 21155 | Upperco | Baltimore County | 3,313 | 150 | $123k | $480k |
| 21156 | Upper Falls | Baltimore County | 204 | 194 | – | $794k |
| 21157 | Westminster | Carroll County | 38,984 | 502 | $105k | $424k |
| 21158 | Westminster | Carroll County | 22,083 | 301 | $110k | $385k |
| 21160 | Whiteford | Harford County | 2,441 | 157 | $106k | $391k |
| 21161 | White Hall | Harford County | 5,221 | 108 | $108k | $473k |
| 21162 | White Marsh | Baltimore County | 4,639 | 651 | $158k | $452k |
| 21163 | Woodstock | Baltimore County | 7,539 | 553 | $135k | $603k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.