| Joson's Fine Jewelry | 113 La Grange Ave
La Plata, MD 20646 | (301) 934-7188 | |
| John Hanson Middle School | 12350 Vivian Adams Drive
Waldorf, MD 20601 | | |
| Jimmy Johns Gourmet Sandwiches | 2481 Crain Highway
Waldorf, MD 20603 | (240) 210-8227 | |
| Jillian's Fare | Various Locations in Charles County
La Plata, MD 20646 | | |
| Jersey Mike's Subs | 105 Drury Drive
La Plata, MD 20646 | (240) 901-8021 | |
| Jerry Yum's | 183 Saint Patricks Drive
Waldorf, MD 20603 | (301) 632-6009 | |
| Japan Express, La Plata | 105F Drury Drive
La Plata, MD 20646 | (301) 934-6888 | |
| James E. Richmond Science Center | 5305 Piney Church Road
Waldorf, MD 20602 | (301) 934-7464 | |
| J.P. Ryon Elementary School | 12140 Vivian Adams Drive
Waldorf, MD 20601 | (301) 645-3090 | |
| J. C. Parks Elementary School | 3505 Livingston Road
Indian Head, MD 20640 | | |
| Island Music Company | 403 Charles Street
La Plata, MD 20646 | | |
| Island Marine & Charter Fishing LLC | Captain Charles Marina
Cobb Island , MD 20625 | | |
| Ironsides Vol Rescue Squad | 6120 Port Tobacco Rd
La Plata, MD 20646 | | |
| Integrity Nail Institute | 2170 Old Washington Road Suite 105
Waldorf, MD 20601 | | |
| Indian Head Village Green Pavilion | 100 Walter Thomas Road
Indian Head, MD 20640 | | |
| Indian Head VFD & RS | 4095 Indian Head Hwy
Indian Head, MD 20640 | | |
| Indian Head Senior Center | 100 Cornwallis Square
Indian Head, MD 20640 | | |
| Indian Head Rail Trail | 10390 Theodore Green Boulevard
White Plains, MD 20695 | (301) 932-3470 | |
| Indian Head Rail Trail | 10390 Theodore Green Boulevard
White Plains, MD 20695 | (301) 932-3470 | |
| Indian Head Inn | 4640 Strauss Ave
Indian Head, MD 20640 | (301) 743-5405 | |