| Name | Address, Zip |
| Prosser Combined Ptsa 12-2-32 | Po Box 404, 99350-0404 |
| Prosser Senior Class 2019 | Po Box 405, 99350-0405 |
| Abrigo Del Alticimo | 956 S Kinney Way, 99350-1027 |
| Prosser Wrestling Academy | 1421 Roza Vista Pl, 99350-1234 |
| Prosser Wrestling Academy | 10401 N Mcdonald Rd, 99350-7664 |
| Free & Accepted Masons Of Washington | 1229 Bennett Ave, 99350-1413 |
| Access Northwest | 220 Sw Malibu Dr, 99350-9419 |
| Prosser Community Involvment And Action | Po Box 110, 99350-0110 |
| Amber Burnett Memorial Scholarship | 18825 N 1239 Pr Nw, 99350-9623 |
| Future Farmers Of America State Associations & Local Chapter | Po Box 1187, 99350-0960 |
| American Legion | Po Box 229, 99350-0229 |
| American Legion Auxiliary | 355 Old Inland Empire Hwy, 99350-9203 |
| Amvets | 10801 N Missimer Rd, 99350-9221 |
| Amvets | 1101 Wine Country Rd, 99350-1192 |
| Margueryte And Bern Mercer Scholarship And Loan Fund | Po Box 809, 99350-0809 |
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| Prosser Wine And Food Fair Association | 1230 Bennett Ave, 99350-1479 |
| Science Exploration And Education | 1888 Playfield Ave, 99350 |
| Benton County Museum And Historical Society | Po Box 1407, 99350-0800 |
| Annie Tran Foundation | 80408 W Oie Hwy, 99350-5637 |
| Independent Assemblies Of God International | Po Box 41, 99350-0041 |
| Roza Heights Water Assn Inc | Po Box 456, 99350-0456 |
| Whitstran Heights Water Assn | 110201 W Hanks Rd, 99350-8611 |
| Prosser Youth Football Association | Po Box 91, 99350-0091 |
| West Benton Firefighter Association | 1200 Grant Ave, 99350-1118 |
| Prime Time Kids Association | 10401 N Mcdonald Rd, 99350-7664 |
| Farmers Market Association | Po Box 501, 99350-0501 |
| Historic Downtown Prosser Association | 1230 Bennett Ave, 99350-1479 |
| Benton Rural Electric Association | Po Box 1150, 99350-0953 |
| Prosser Cemetery Association Inc | Po Box 1439, 99350-0800 |
| Montana Auctioneer Association | 2023 Miller Ave, 99350-1534 |
| Prosser Economic Development Association | 236 Port Ave Ste A, 99350-5039 |
| Washington Auctioneers Association | 2023 Miller Ave, 99350-1534 |
| Columbia River Nurse Practitioner Association | 68701 W Island View Pr Nw, 99350-7400 |
| G W Mabel Smith Cemetery Association | 1135 Alderdale Rd, 99350-9300 |
| Babywearing International Inc | 1407 Wine Country Rd, 99350-1148 |
| Great Prosser Balloon Rally | 1230 Bennett Ave, 99350-1479 |
| Prosser Community Band | 6509 S 1396 Pr Sw, 99350-8515 |
| Calvary Baptist Church Of Prosser Washington | Po Box 648, 99350-0648 |
| First Baptist Church | 956 S Kinney Way, 99350-1027 |
| Prosser Youth Baseball | 1449 Paterson Rd, 99350-1427 |
| Prosser Basketball | 169208 W King Tull Rd, 99350-7256 |
| Isola Bella Foundation | 155805 W Byron Rd, 99350-6519 |
| Prosser Public Hospital District Of Benton County | 723 Memorial St, 99350-1524 |
| Prosser Booster Club | Po Box 1552, 99350-0833 |
| Prosser Music Boosters | Po Box 1328, 99350-0881 |
| Center For Proto-buddhism Studies | 2001 Paterson Rd, 99350-1596 |
| El Buen Samaritano Pentecostal Holiness Church | 824 6th St, 99350-1441 |
| Dr Burr Field Scholarship Fund | Po Box 1655, 99350-0834 |
| Lewis Clark Camping Fellowship | 965 Campbell Dr, 99350-1307 |
| Walter Clore Wine & Culinary Center | 2140 Wine Country Rd, 99350-1389 |
| Prosser Chamber Of Commerce | 1230 Bennett Ave, 99350-1479 |
| The Watering Hole Cowboy Church | 6502 N Wilgus Rd, 99350-9262 |
| Messiah Lutheran Church | 801 Luther Ln, 99350-1549 |
| Covenant Presbyterian Church Of Processer Wa | 912 Yakima Ave, 99350-1375 |
| Prosser Senior Citizens Club | 1231 Dudley Ave, 99350-1417 |
| Tops Club Inc | 18802 N Patricia Rd, 99350-8833 |
| Horse Heaven Community Club Inc | 40302 S Travis Rd, 99350-9453 |
| Knights Of Columbus | 17604 S Lanell Dr, 99350-1400 |
| Northwest Community Foundation | 80502 W Swaley Rd, 99350-6680 |
| Prosser Conservatory Of Theatre Forchildren | Po Box 1230, 99350-0880 |
| Prosser Depot Inc | 1230 Bennett Ave, 99350-1479 |
| Veterans Of Foreign Wars Of The United States Dept Of Washington | 1101 Wine Country Rd, 99350-1192 |
| Veterans Of Foreign Wars Of The United States Dept Of Washington | 1101 Wine Country Rd, 99350-1192 |
| Fraternal Order Of Eagles | Po Box 669, 99350-0669 |
| Fraternal Order Of Eagles | Po Box 669, 99350-0669 |
| Universal Faith Monastery | 2001 Paterson Rd, 99350-1596 |
| Graphe Foundation | 25206 S 1522 Pr Sw, 99350-8832 |
| Sharehouse Foundation | 613 6th St, 99350-1436 |
| Prosser Memorial Health Foundation | 723 Memorial St, 99350-1524 |
| Washington State Patrol Memorial Foundation | Po Box 901, 99350-0901 |
| Fresh Start Ministries | 535 Sw Bennett Ave, 99350-6578 |
| Prosser Scholarship Fund | 1108 Concord Way, 99350-1601 |
| Hershal Pleasant Memorial Scholarship Fund | 11701 N Pioneer Rd, 99350-6623 |
| Prosser United Good Neighbors | 355 Wine Country Rd, 99350-9797 |
| Grandview Neptunes Rotary Swim Team | 160101 W Byron Rd, 99350-7558 |
| Washington State Grange | Po Box 412, 99350-0412 |
| Washington Wine Technical Group | 2023 Miller Ave, 99350-1534 |
| Horse Heaven Hills Wine Growers | 1245 Alderdale Rd, 99350-9301 |
| Horse Heaven Hills Kitten Rescue | 165008 W Old Inland Empire Hwy, 99350-7755 |
| Horse Heaven Sportsmen Society | Po Box 425, 99350-0425 |
| Northwest Nursery Improvement Institute | 2340 Lee Rd, 99350-5543 |
| Kiwanis International Inc | Po Box 621, 99350-0621 |
| Prosser Tower Site Inc | Po Box 1635, 99350-0834 |
| Rotary International | Po Box 361, 99350-0361 |
| Toastmasters International | 172303 W Buena Vista Rd, 99350-9310 |
| Tender Journey | 130401 W 215 Pr Nw, 99350-8502 |
| Jubilee Minstry Of Prosser | Po Box 66, 99350-0066 |
| Kiddie Korner Nursery School | Po Box 484, 99350-0484 |
| Prosser Wine Network | Po Box 1624, 99350-0834 |
| Out West Pet Rescue | 424 Wine Country Rd, 99350-9539 |
| Prosser Rotary Supports Various Projects | Po Box 361, 99350-0361 |
| Prosser Swim Team | Po Box 1252, 99350-0880 |
| Prosser Pto | 144801 W Buena Vista Rd, 99350-7255 |
| Sofias Shining Stars | 1001 5th St, 99350-1322 |
| Washington State University | 168602 W 215 Pr Sw, 99350-7570 |
| Valley Theater | 1228 Meade Ave, 99350-1424 |
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