Aggregated 12-month totals by ZIP/postal area.
| ZIP | Area | Carriers | Crashes | Inspections | OOS% |
|---|---|---|---|---|---|
| US 20612 | Benedict, MD | 2 | 0 | 0 | 0.00 |
| US 20615 | Broomes Island, MD | 2 | 0 | 1 | 100.00 |
| US 20617 | Bryantown, MD | 10 | 0 | 16 | 37.50 |
| US 20619 | California, MD | 52 | 0 | 20 | 50.00 |
| US 20620 | Callaway, MD | 15 | 0 | 3 | 66.67 |
| US 20621 | Chaptico, MD | 14 | 0 | 2 | 0.00 |
| US 20623 | Cheltenham, MD | 23 | 0 | 19 | 36.84 |
| US 20625 | Cobb Island, MD | 7 | 0 | 1 | 100.00 |
| US 20626 | Coltons Point, MD | 3 | 0 | 1 | 0.00 |
| US 20627 | Compton, MD | 1 | 0 | 0 | 0.00 |
| US 20628 | Dameron, MD | 7 | 0 | 0 | 0.00 |
| US 20629 | Dowell, MD | 3 | 0 | 1 | 400.00 |
| US 20630 | Drayden, MD | 11 | 0 | 0 | 0.00 |
| US 20632 | Faulkner, MD | 9 | 0 | 3 | 33.33 |
| US 20635 | Helen, MD | 1 | 0 | 0 | 0.00 |
| US 20645 | Issue, MD | 5 | 0 | 1 | 200.00 |
| US 20653 | Lexington Park, MD | 114 | 0 | 65 | 47.69 |
| US 20656 | Loveville, MD | 5 | 0 | 12 | 0.00 |
| US 20657 | Lusby, MD | 118 | 0 | 27 | 111.11 |
| US 20658 | Marbury, MD | 9 | 0 | 0 | 0.00 |
| US 20660 | Morganza, MD | 2 | 0 | 0 | 0.00 |
| US 20662 | Nanjemoy, MD | 35 | 0 | 14 | 35.71 |
| US 20670 | Patuxent River, MD | 1 | 0 | 0 | 0.00 |
| US 20674 | Piney Point, MD | 6 | 0 | 12 | 25.00 |
| US 20677 | Port Tobacco, MD | 20 | 0 | 11 | 27.27 |
| US 20684 | Saint Inigoes, MD | 9 | 0 | 0 | 0.00 |
| US 20685 | Saint Leonard, MD | 64 | 0 | 42 | 90.48 |
| US 20686 | Saint Marys City, MD | 2 | 0 | 0 | 0.00 |
| US 20687 | Scotland, MD | 4 | 0 | 2 | 50.00 |
| US 20688 | Solomons, MD | 11 | 0 | 1 | 200.00 |
| US 20689 | Sunderland, MD | 24 | 0 | 13 | 38.46 |
| US 20692 | Valley Lee, MD | 16 | 0 | 0 | 0.00 |
| US 20693 | Welcome, MD | 12 | 0 | 6 | 0.00 |
| US 20702 | , | 1 | 0 | 0 | 0.00 |
| US 20703 | Lanham, MD | 2 | 0 | 0 | 0.00 |
| US 20704 | Beltsville, MD | 2 | 0 | 6 | 83.33 |
| US 20712 | Mount Rainier, MD | 52 | 0 | 28 | 57.14 |
| US 20714 | North Beach, MD | 13 | 0 | 5 | 120.00 |
| US 20717 | Bowie, MD | 1 | 0 | 0 | 0.00 |
| US 20725 | Laurel, MD | 1 | 0 | 1 | 200.00 |
| US 20733 | Churchton, MD | 15 | 0 | 1 | 100.00 |
| US 20749 | Fort Washington, MD | 1 | 0 | 0 | 0.00 |
| US 20752 | Suitland, MD | 2 | 0 | 1 | 0.00 |
| US 20753 | District Heights, MD | 2 | 0 | 4 | 100.00 |
| US 20754 | Dunkirk, MD | 58 | 0 | 60 | 41.67 |
| US 20755 | Fort George G Meade, MD | 2 | 0 | 0 | 0.00 |
| US 20758 | Friendship, MD | 14 | 0 | 3 | 100.00 |
| US 20762 | Andrews Air Force Base, MD | 1 | 0 | 0 | 0.00 |
| US 20764 | Shady Side, MD | 29 | 0 | 3 | 133.33 |
| US 20768 | Greenbelt, MD | 1 | 0 | 0 | 0.00 |
| US 20773 | Upper Marlboro, MD | 3 | 0 | 39 | 2.56 |
| US 20777 | Highland, MD | 28 | 0 | 7 | 57.14 |
| US 20778 | West River, MD | 17 | 0 | 10 | 50.00 |
| US 20779 | Tracys Landing, MD | 14 | 0 | 10 | 0.00 |
| US 20787 | Hyattsville, MD | 2 | 0 | 0 | 0.00 |
| US 20791 | Capitol Heights, MD | 3 | 0 | 0 | 0.00 |
| US 20792 | Upper Marlboro, MD | 1 | 0 | 0 | 0.00 |
| US 20797 | Southern Md Facility, MD | 1 | 0 | 0 | 0.00 |
| US 20800 | , | 3 | 0 | 16 | 25.00 |
| US 20802 | , | 1 | 0 | 0 | 0.00 |
| US 20804 | , | 1 | 0 | 71 | 50.70 |
| US 20812 | Glen Echo, MD | 1 | 0 | 0 | 0.00 |
| US 20814 | Bethesda, MD | 58 | 0 | 43 | 65.12 |
| US 20815 | Chevy Chase, MD | 27 | 0 | 16 | 31.25 |
| US 20818 | Cabin John, MD | 3 | 0 | 2 | 50.00 |
| US 20830 | Olney, MD | 1 | 0 | 0 | 0.00 |
| US 20838 | Barnesville, MD | 3 | 0 | 0 | 0.00 |
| US 20839 | Beallsville, MD | 6 | 0 | 4 | 150.00 |
| US 20848 | Rockville, MD | 2 | 0 | 0 | 0.00 |
| US 20854 | Potomac, MD | 44 | 0 | 47 | 34.04 |
| US 20859 | Potomac, MD | 1 | 0 | 0 | 0.00 |
| US 20861 | Ashton, MD | 23 | 0 | 22 | 54.55 |
| US 20862 | Brinklow, MD | 6 | 0 | 1 | 400.00 |
| US 20868 | Spencerville, MD | 27 | 0 | 32 | 81.25 |
| US 20875 | Germantown, MD | 2 | 0 | 10 | 10.00 |
| US 20880 | Washington Grove, MD | 4 | 0 | 4 | 0.00 |
| US 20884 | Gaithersburg, MD | 1 | 0 | 1 | 100.00 |
| US 20896 | Garrett Park, MD | 3 | 0 | 0 | 0.00 |
| US 20899 | Gaithersburg, MD | 1 | 0 | 0 | 0.00 |
| US 20907 | Silver Spring, MD | 1 | 0 | 0 | 0.00 |
| US 20908 | Silver Spring, MD | 1 | 0 | 0 | 0.00 |
| US 20916 | Silver Spring, MD | 1 | 0 | 3 | 233.33 |
| US 20918 | Silver Spring, MD | 1 | 0 | 4 | 25.00 |
| US 20923 | , | 1 | 0 | 6 | 16.67 |
| US 20984 | , | 1 | 0 | 37 | 13.51 |
| US 20997 | Silver Spring, MD | 1 | 0 | 1 | 0.00 |
| US 21005 | Aberdeen Proving Ground, MD | 1 | 0 | 0 | 0.00 |
| US 21010 | Gunpowder, MD | 2 | 0 | 2 | 50.00 |
| US 21013 | Baldwin, MD | 35 | 0 | 20 | 35.00 |
| US 21023 | Butler, MD | 1 | 0 | 0 | 0.00 |
| US 21027 | Chase, MD | 2 | 0 | 2 | 0.00 |
| US 21029 | Clarksville, MD | 43 | 0 | 21 | 85.71 |
| US 21031 | Hunt Valley, MD | 24 | 0 | 34 | 11.76 |
| US 21032 | Crownsville, MD | 74 | 0 | 17 | 47.06 |
| US 21034 | Darlington, MD | 56 | 0 | 37 | 59.46 |
| US 21035 | Davidsonville, MD | 96 | 0 | 99 | 58.59 |
| US 21036 | Dayton, MD | 19 | 0 | 13 | 7.69 |
| US 21038 | , | 1 | 0 | 7 | 14.29 |
| US 21042 | Ellicott City, MD | 111 | 0 | 86 | 48.84 |
| US 21051 | Fork, MD | 4 | 0 | 0 | 0.00 |
| US 21052 | Fort Howard, MD | 6 | 0 | 14 | 92.86 |
| US 21053 | Freeland, MD | 36 | 0 | 17 | 52.94 |
| US 21056 | Gibson Island, MD | 1 | 0 | 0 | 0.00 |
| US 21057 | Glen Arm, MD | 47 | 0 | 29 | 17.24 |
| US 21071 | Glyndon, MD | 2 | 0 | 1 | 0.00 |
| US 21082 | Hydes, MD | 7 | 0 | 1 | 200.00 |
| US 21101 | , | 2 | 0 | 0 | 0.00 |
| US 21105 | Maryland Line, MD | 2 | 0 | 1 | 0.00 |
| US 21106 | Mayo, MD | 2 | 0 | 0 | 0.00 |
| US 21111 | Monkton, MD | 35 | 0 | 35 | 28.57 |
| US 21123 | Pasadena, MD | 4 | 0 | 1 | 100.00 |
| US 21130 | Perryman, MD | 3 | 0 | 0 | 0.00 |
| US 21132 | Pylesville, MD | 34 | 0 | 15 | 66.67 |
| US 21139 | Riderwood, MD | 1 | 0 | 0 | 0.00 |
| US 21140 | Riva, MD | 9 | 0 | 1 | 500.00 |
| US 21146 | Severna Park, MD | 101 | 0 | 62 | 72.58 |
| US 21153 | Stevenson, MD | 4 | 0 | 0 | 0.00 |
| US 21156 | Upper Falls, MD | 6 | 0 | 3 | 0.00 |
| US 21160 | Whiteford, MD | 38 | 0 | 18 | 27.78 |
| US 21167 | , | 1 | 0 | 0 | 0.00 |
| US 21190 | , | 1 | 0 | 0 | 0.00 |
| US 21200 | , | 1 | 0 | 57 | 35.09 |
| US 21201 | Baltimore, MD | 51 | 0 | 12 | 41.67 |
| US 21203 | Baltimore, MD | 2 | 0 | 2 | 0.00 |
| US 21210 | Baltimore, MD | 16 | 0 | 72 | 15.28 |
| US 21212 | Baltimore, MD | 69 | 0 | 27 | 81.48 |
| US 21214 | Baltimore, MD | 95 | 0 | 27 | 48.15 |
| US 21217 | Baltimore, MD | 84 | 0 | 37 | 67.57 |
| US 21240 | Baltimore, MD | 4 | 0 | 242 | 3.72 |
| US 21259 | , | 1 | 0 | 13 | 0.00 |
| US 21260 | , | 1 | 0 | 0 | 0.00 |
| US 21266 | , | 1 | 0 | 90 | 6.67 |
| US 21282 | Pikesville, MD | 1 | 0 | 1 | 0.00 |
| US 21286 | Towson, MD | 54 | 0 | 42 | 33.33 |
| US 21287 | Baltimore, MD | 1 | 0 | 0 | 0.00 |
| US 21290 | Baltimore, MD | 4 | 0 | 33 | 21.21 |
| US 21297 | Baltimore, MD | 1 | 0 | 0 | 0.00 |
| US 21301 | , | 1 | 0 | 1 | 300.00 |
| US 21359 | , | 1 | 0 | 274 | 14.23 |
| US 21360 | , | 4 | 0 | 195 | 5.13 |
| US 21370 | , | 1 | 0 | 82 | 8.54 |
| US 21378 | , | 1 | 0 | 10 | 30.00 |
| US 21379 | , | 1 | 0 | 236 | 4.66 |
| US 21380 | , | 1 | 0 | 149 | 13.42 |
| US 21385 | , | 1 | 0 | 7 | 14.29 |
| US 21387 | , | 1 | 0 | 0 | 0.00 |
| US 21389 | , | 2 | 0 | 18 | 44.44 |
| US 21390 | , | 2 | 0 | 348 | 8.62 |
| US 21394 | , | 1 | 0 | 27 | 14.81 |
| US 21399 | , | 3 | 0 | 54 | 62.96 |
| US 21400 | , | 2 | 0 | 20 | 15.00 |
| US 21402 | Annapolis, MD | 1 | 0 | 0 | 0.00 |
| US 21405 | Annapolis, MD | 2 | 0 | 1 | 0.00 |
| US 21430 | , | 3 | 0 | 63 | 12.70 |
| US 21440 | , | 4 | 0 | 186 | 12.90 |
| US 21449 | , | 1 | 0 | 10 | 30.00 |
| US 21460 | , | 1 | 0 | 4 | 0.00 |
| US 21470 | , | 1 | 0 | 0 | 0.00 |
| US 21472 | , | 1 | 0 | 4 | 25.00 |
| US 21501 | Cumberland, MD | 2 | 0 | 3 | 0.00 |
| US 21504 | Cumberland, MD | 1 | 0 | 1 | 0.00 |
| US 21521 | Barton, MD | 18 | 0 | 12 | 58.33 |
| US 21522 | Bittinger, MD | 2 | 0 | 0 | 0.00 |
| US 21523 | Bloomington, MD | 2 | 0 | 6 | 33.33 |
| US 21524 | Corriganville, MD | 5 | 0 | 4 | 0.00 |
| US 21528 | Eckhart Mines, MD | 1 | 0 | 25 | 0.00 |
| US 21529 | Ellerslie, MD | 1 | 0 | 0 | 0.00 |
| US 21530 | Flintstone, MD | 17 | 0 | 6 | 0.00 |
| US 21538 | Kitzmiller, MD | 3 | 0 | 1 | 200.00 |
| US 21539 | Lonaconing, MD | 21 | 0 | 2 | 0.00 |
| US 21541 | Mc Henry, MD | 28 | 0 | 2 | 100.00 |
| US 21543 | Midlothian, MD | 2 | 0 | 4 | 0.00 |
| US 21555 | Oldtown, MD | 18 | 0 | 2 | 50.00 |
| US 21556 | Pinto, MD | 2 | 0 | 0 | 0.00 |
| US 21557 | Rawlings, MD | 5 | 0 | 2 | 50.00 |
| US 21561 | Swanton, MD | 19 | 0 | 0 | 0.00 |
| US 21562 | Westernport, MD | 12 | 0 | 11 | 9.09 |
| US 21600 | , | 6 | 0 | 307 | 18.24 |
| US 21607 | Barclay, MD | 12 | 0 | 24 | 29.17 |
| US 21610 | Betterton, MD | 3 | 0 | 0 | 0.00 |
| US 21622 | Church Creek, MD | 15 | 0 | 3 | 0.00 |
| US 21623 | Church Hill, MD | 41 | 0 | 38 | 36.84 |
| US 21624 | Claiborne, MD | 1 | 0 | 0 | 0.00 |
| US 21628 | Crumpton, MD | 6 | 0 | 1 | 100.00 |
| US 21631 | East New Market, MD | 48 | 0 | 78 | 23.08 |
| US 21634 | Fishing Creek, MD | 8 | 0 | 2 | 0.00 |
| US 21635 | Galena, MD | 19 | 0 | 24 | 4.17 |
| US 21636 | Goldsboro, MD | 14 | 0 | 10 | 70.00 |
| US 21638 | Grasonville, MD | 69 | 0 | 134 | 9.70 |
| US 21647 | Mcdaniel, MD | 14 | 0 | 1 | 100.00 |
| US 21648 | Madison, MD | 2 | 0 | 4 | 50.00 |
| US 21649 | Marydel, MD | 30 | 0 | 27 | 40.74 |
| US 21650 | Massey, MD | 7 | 0 | 19 | 21.05 |
| US 21652 | Neavitt, MD | 3 | 0 | 1 | 100.00 |
| US 21653 | Newcomb, MD | 1 | 0 | 0 | 0.00 |
| US 21654 | Oxford, MD | 6 | 0 | 3 | 0.00 |
| US 21658 | Queenstown, MD | 91 | 0 | 101 | 49.50 |
| US 21659 | Rhodesdale, MD | 33 | 0 | 26 | 26.92 |
| US 21660 | Ridgely, MD | 67 | 0 | 47 | 23.40 |
| US 21661 | Rock Hall, MD | 27 | 0 | 5 | 60.00 |