Prefix 21 contains 380 ZIP code records across 295 mapped localities in United States.
Based on 380 records, 380 ZIP code values and 295 mapped localities. Coordinate coverage is 100.0%.
| Postal code | Locality | Administrative path | Coordinates |
|---|---|---|---|
| 21001 | Aberdeen | Maryland / Harford | 39.5109, -76.1805 |
| 21005 | Aberdeen Proving Ground | Maryland / Harford | 39.4771, -76.1208 |
| 21009 | Abingdon | Maryland / Harford | 39.4744, -76.2997 |
| 21010 | Gunpowder | Maryland / Harford | 39.3982, -76.2743 |
| 21012 | Arnold | Maryland / Anne Arundel | 39.0476, -76.4941 |
| 21013 | Baldwin | Maryland / Baltimore | 39.5194, -76.4927 |
Compare this range with other active ZIP code prefixes from the same country-level directory.
This page keeps a bounded sample for fast crawling and links each code to its canonical lookup page. Use the country export when you need the full prefix dataset.
| Postal code | Locality | Region | Coordinates |
|---|---|---|---|
| 21001 | Aberdeen | Maryland / Harford | 39.5109, -76.1805 |
| 21005 | Aberdeen Proving Ground | Maryland / Harford | 39.4771, -76.1208 |
| 21009 | Abingdon | Maryland / Harford | 39.4744, -76.2997 |
| 21010 | Gunpowder | Maryland / Harford | 39.3982, -76.2743 |
| 21012 | Arnold | Maryland / Anne Arundel | 39.0476, -76.4941 |
| 21013 | Baldwin | Maryland / Baltimore | 39.5194, -76.4927 |
| 21014 | Bel Air | Maryland / Harford | 39.5394, -76.3564 |
| 21015 | Bel Air | Maryland / Harford | 39.5303, -76.3153 |
| 21017 | Belcamp | Maryland / Harford | 39.4756, -76.242 |
| 21018 | Benson | Maryland / Harford | 39.5093, -76.3851 |
| 21020 | Boring | Maryland / Baltimore | 39.5213, -76.8047 |
| 21022 | Brooklandville | Maryland / Baltimore | 39.3979, -76.6717 |
| 21023 | Butler | Maryland / Baltimore | 39.533, -76.7432 |
| 21027 | Chase | Maryland / Baltimore | 39.3634, -76.3711 |
| 21028 | Churchville | Maryland / Harford | 39.5648, -76.249 |
| 21029 | Clarksville | Maryland / Howard | 39.2125, -76.9515 |
| 21030 | Cockeysville | Maryland / Baltimore | 39.4919, -76.6677 |
| 21031 | Hunt Valley | Maryland / Baltimore | 39.4805, -76.6553 |
| 21032 | Crownsville | Maryland / Anne Arundel | 39.0489, -76.5935 |
| 21034 | Darlington | Maryland / Harford | 39.654, -76.2278 |
| 21035 | Davidsonville | Maryland / Anne Arundel | 38.9374, -76.6375 |
| 21036 | Dayton | Maryland / Howard | 39.2339, -76.9968 |
| 21037 | Edgewater | Maryland / Anne Arundel | 38.9149, -76.5424 |
| 21040 | Edgewood | Maryland / Harford | 39.4277, -76.3055 |
| 21041 | Ellicott City | Maryland / Howard | 39.2364, -76.9419 |
| 21042 | Ellicott City | Maryland / Howard | 39.2726, -76.8614 |
| 21043 | Ellicott City | Maryland / Howard | 39.2548, -76.8001 |
| 21044 | Columbia | Maryland / Howard | 39.2141, -76.8788 |
| 21045 | Columbia | Maryland / Howard | 39.2051, -76.8322 |
| 21046 | Columbia | Maryland / Howard | 39.1702, -76.8538 |
| 21047 | Fallston | Maryland / Harford | 39.527, -76.4328 |
| 21048 | Finksburg | Maryland / Carroll | 39.4991, -76.9101 |
| 21050 | Forest Hill | Maryland / Harford | 39.5755, -76.4008 |
| 21051 | Fork | Maryland / Baltimore | 39.4731, -76.4484 |
| 21052 | Fort Howard | Maryland / Baltimore | 39.207, -76.4456 |
| 21053 | Freeland | Maryland / Baltimore | 39.694, -76.7223 |
| 21054 | Gambrills | Maryland / Anne Arundel | 39.0407, -76.6819 |
| 21056 | Gibson Island | Maryland / Anne Arundel | 39.0751, -76.4324 |
| 21057 | Glen Arm | Maryland / Baltimore | 39.4575, -76.5153 |
| 21060 | Glen Burnie | Maryland / Anne Arundel | 39.1702, -76.5798 |
| 21061 | Glen Burnie | Maryland / Anne Arundel | 39.1618, -76.6297 |
| 21062 | Glen Burnie | Maryland / Anne Arundel | 38.9742, -76.5949 |
| 21065 | Hunt Valley | Maryland / Baltimore | 39.4883, -76.6538 |
| 21071 | Glyndon | Maryland / Baltimore | 39.477, -76.815 |
| 21074 | Hampstead | Maryland / Carroll | 39.6146, -76.8644 |
| 21075 | Elkridge | Maryland / Howard | 39.2058, -76.7531 |
| 21076 | Hanover | Maryland / Anne Arundel | 39.1551, -76.7215 |
| 21077 | Harmans | Maryland / Anne Arundel | 39.1561, -76.6977 |
| 21078 | Havre De Grace | Maryland / Harford | 39.5523, -76.1171 |
| 21082 | Hydes | Maryland / Baltimore | 39.474, -76.4695 |
| 21084 | Jarrettsville | Maryland / Harford | 39.6162, -76.4684 |
| 21085 | Joppa | Maryland / Harford | 39.4242, -76.3541 |
| 21087 | Kingsville | Maryland / Baltimore | 39.4558, -76.4147 |
| 21088 | Lineboro | Maryland / Carroll | 39.7187, -76.8439 |
| 21090 | Linthicum Heights | Maryland / Anne Arundel | 39.2092, -76.6681 |
| 21092 | Long Green | Maryland / Baltimore | 39.4729, -76.523 |
| 21093 | Lutherville Timonium | Maryland / Baltimore | 39.4332, -76.6546 |
| 21094 | Lutherville Timonium | Maryland / Baltimore | 39.439, -76.5921 |
| 21102 | Manchester | Maryland / Carroll | 39.6747, -76.8941 |
| 21104 | Marriottsville | Maryland / Carroll | 39.3342, -76.9132 |
| 21105 | Maryland Line | Maryland / Baltimore | 39.7114, -76.6595 |
| 21106 | Mayo | Maryland / Anne Arundel | 38.8876, -76.5119 |
| 21108 | Millersville | Maryland / Anne Arundel | 39.1041, -76.619 |
| 21111 | Monkton | Maryland / Baltimore | 39.5662, -76.5979 |
| 21113 | Odenton | Maryland / Anne Arundel | 39.0762, -76.6996 |
| 21114 | Crofton | Maryland / Anne Arundel | 39.0112, -76.6802 |
| 21117 | Owings Mills | Maryland / Baltimore | 39.4269, -76.7769 |
| 21120 | Parkton | Maryland / Baltimore | 39.6422, -76.6737 |
| 21122 | Pasadena | Maryland / Anne Arundel | 39.1206, -76.495 |
| 21123 | Pasadena | Maryland / Anne Arundel | 38.9742, -76.5949 |
| 21128 | Perry Hall | Maryland / Baltimore | 39.401, -76.451 |
| 21130 | Perryman | Maryland / Harford | 39.4716, -76.2117 |
| 21131 | Phoenix | Maryland / Baltimore | 39.4833, -76.5776 |
| 21132 | Pylesville | Maryland / Harford | 39.6959, -76.4113 |
| 21133 | Randallstown | Maryland / Baltimore | 39.3746, -76.8002 |
| 21136 | Reisterstown | Maryland / Baltimore | 39.46, -76.8135 |
| 21139 | Riderwood | Maryland / Baltimore | 39.4093, -76.6486 |
| 21140 | Riva | Maryland / Anne Arundel | 38.9504, -76.5854 |
| 21144 | Severn | Maryland / Anne Arundel | 39.1275, -76.698 |
| 21146 | Severna Park | Maryland / Anne Arundel | 39.0811, -76.5577 |
Showing 80 representative records from 380 matching codes to keep the page fast and crawlable. Download the United States dataset for complete coverage.