| Name | Address, Zip |
| Harrington Chapt No 1229 Women Of The Moose | Po Box 277, 19952-0277 |
| 2nd Chance Fur-babies Animal Rescue Inc | 352 Toby Collins Ln, 19952-5933 |
| Harrington Lodge No 534 Loyal Order Of Moose | Po Box 339, 19952-0339 |
| Shore K-9 Search & Rescue Inc | 2677 Park Brown Rd, 19952-5524 |
| Messick Agricultural Museum Inc | 317 Walt Messick Rd, 19952-3300 |
| Word Alive Family Worship Centerministries Inc | 15510 S Dupont Hwy, 19952-3182 |
| Harrington High School Alumni Assoication | Po Box 37, 19952-0037 |
| The Harrington High School Alumni Association Scholarship Char Trust | Po Box 37, 19952-0037 |
| St Paul Ame Church | 103 W Mispillion St, 19952-1026 |
| Future Farmers Of America State Associations & Local Chapter | 4181 Canterbury Rd, 19952-2815 |
| National Society Of The Daughters Of The American Revolution | 317 Calvin St, 19952-1169 |
| American Federation Of State County & Municipal Employees | 940 Killens Pond Rd, 19952-2537 |
| American Legion Auxiliary | 17448 S Dupont Hwy, 19952-2481 |
| American Legion | 17448 S Dupont Hwy, 19952-2481 |
| Andrewville Tax Ditch | 292 Prospect Church Rd, 19952-4332 |
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| Doggone Happy Animal Rescue Of De Inc | 1328 Gallo Rd, 19952-4460 |
| Mid-del Archers Inc | Po Box 142, 19952-0142 |
| Gymstarz Gymnastics Parent Association | 911 Killens Pond Rd, 19952-2543 |
| Delaware Stars Youth Ice Hockey Association | Po Box 161, 19952-0161 |
| Lake Forest Church Association Inc | Po Box 101, 19952-0101 |
| Delmarva Gospel Music Association | 1086 Jackson Ditch Rd, 19952-2418 |
| International Association Of Lions Clubs | Po Box 208, 19952-0208 |
| Community Health Workers Association Of Delaware | 1745 Butler Rd, 19952-2310 |
| Gold Wing Road Riders Association | 308 Ingram Branch Rd, 19952-4744 |
| Deer Meadows Homeowners Association Inc | 100 Doe Ct, 19952-1711 |
| Delaware Express Athletic Organization | Po Box 175, 19952-0175 |
| Harrington Youth Athletics | Po Box 54, 19952-0054 |
| Milford Community Band | 1234 Killens Pond Rd, 19952-2725 |
| Harrington Baptist Church | 111 E Liberty St, 19952-1251 |
| Bay Country Figure Skating Club Inc | Po Box 8, 19952-0008 |
| Make Them Believe Inc | 11 Clarks Cor, 19952-1039 |
| Birth Network | 211 Weiner Ave, 19952-1138 |
| Buccaneer Educational Foundation Inc | 114 Woodview Dr, 19952-1703 |
| Calvary Wesleyan Church | 240 Delaware Ave, 19952-1257 |
| Friends Taking Care Of Friends Inc | 15 W Rider Rd, 19952-3322 |
| Hollywood Cemetery Company Inc | Po Box 231, 19952-0231 |
| Poplar Empowerment Community Center | 72 Rachel Dr, 19952-2495 |
| Harrington Senior Center Inc | 102 Fleming St, 19952-1145 |
| Lake Forest Central Elem Ptso | 5424 Killens Pond Rd, 19952 |
| Mid-del Charitable Foundation | 15 W Rider Rd, 19952-3322 |
| W T Chipman Ptso Inc | 101 W Center St, 19952-1050 |
| Mat Ratz Wrestling Club Inc | 105 E Center St, 19952-1105 |
| Delaware Rough Riders Hockey Club | Po Box 161, 19952-0161 |
| Coastal Coon Hunters Club Inc | 743 Fox Hunters Rd, 19952-4148 |
| Harrington Fire Co Inc | 20 Clark St, 19952-1211 |
| Knights Of Columbus | 109 Dixon St, 19952-1250 |
| Logos Community Development Corporation | 20 Fleming St, 19952-1162 |
| Greater Harrington Community Development Corporation | 27 Clark St, 19952-1244 |
| Lake Forest Community Education Foundation | Po Box 205, 19952-0205 |
| Pta Delaware Congress | 201 Dorman St, 19952-1002 |
| Ruritan National Corp | 4025 Paradise Alley Rd, 19952-3049 |
| Ruritan National Corp | 2058 Parker Rd, 19952-4681 |
| Delaware Equine Council Foundation Inc | Po Box 114, 19952-0114 |
| U Count | Po Box 5, 19952-0005 |
| County Seat Cruisers | 168 Central Park Dr Harrington De, 19952 |
| Delaware State Fair Inc | Rt 13 S Administration Bldg, 19952 |
| First Episcopal District Ministrerial Education Fund Inc | 113 Dorman St, 19952-1001 |
| Independent Order Of Odd Fellows | 1051 White Marsh Branch Rd, 19952-5823 |
| Footsteps For Maddie | 591 Toby Collins Ln, 19952-5942 |
| Heroes For Hooters | 854 Bloomfield Dr, 19952-1747 |
| Foundry Inc | 17 Hogtown Rd, 19952-1966 |
| Friends Of The Harrington Public Library | 101 Little Mastens Corner Rd, 19952-3294 |
| Morgan Seilheimer Medical Fund | 344 Gallo Rd, 19952-4450 |
| Greater Life International Ministry Inc | 16953 S Dupont Hwy, 19952-2487 |
| Greater Harrington Historical Society | 108 Fleming St, 19952-1145 |
| Pop Warner Harrington Little Spartans | 114 E Liberty St, 19952-1221 |
| Power In Praise Ministries | 14 Clark St, 19952-1211 |
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