| Combined Guardians IncCombined Locks | Form 990 | $334,647FY2024 |
| Barron County Historical Society IncorporatedCameron | Form 990 | $332,510FY2024 |
| Manitowoc Symphony Orchestra Association IncManitowoc | Form 990 | $331,029FY2025 |
| Stoughton Conservation Club IncStoughton | Form 990 | $330,059FY2024 |
| Alif InternationalMadison | Form 990 | $329,810FY2024 |
| Darlington Community Child Care Center IncDarlington | Form 990 | $329,267FY2025 |
| NAMI Rock County IncJanesville | Form 990 | $329,155FY2024 |
| Mycological Society of America theWindsor | Form 990 | $327,543FY2024 |
| Stepping Stones IncMedford | Form 990 | $327,006FY2025 |
| Scenic Valley Emergency Medical Services IncorporatedCochrane | Form 990 | $324,054FY2025 |
| Sauk Prairie Area Food Pantry IncSauk City | Form 990 | $323,346FY2025 |
| Mount Horeb Area Historical Society IncMount Horeb | Form 990 | $321,769FY2025 |
| New Berlin Athletic Association IncNew Berlin | Form 990 | $321,497FY2024 |
| Little League Baseball IncMenomonee Falls | Form 990 | $321,434FY2023 |
| Meals on Wheels of Stevens Point IncStevens Point | Form 990 | $321,307FY2024 |
| Wisconsin Academy for Graduate Service Dogs IncMadison | Form 990 | $321,061FY2024 |
| Cross Country Cruisers IncWoodruff | Form 990 | $320,096FY2026 |
| Earl O Vits Memorial TrustTwo Rivers | Form 990 | $319,409FY2025 |
| Oconomowoc Food Pantry IncOconomowoc | Form 990 | $317,403FY2025 |
| Fennimore Rural Fire Department IncFennimore | Form 990 | $316,155FY2025 |
| Alliance on Mental Illness of Racine County IncRacine | Form 990 | $314,893FY2025 |
| Reach Out Lodi IncLodi | Form 990 | $314,695FY2025 |
| McFarland Spartan Sharks IncMcFarland | Form 990 | $314,655FY2025 |
| Wisconsin Environmental Initiative IncMadison | Form 990 | $313,015FY2024 |
| Waukesha Free Clinic IncWaukesha | Form 990 | $310,479FY2025 |
| Shorewood Foundation IncShorewood | Form 990 | $310,041FY2024 |
| Portage County Youth Soccer LtdStevens Point | Form 990 | $306,953FY2025 |
| Future Farmers of America and Its State Associations & Local ChapterRandolph | Form 990 | $306,874FY2025 |
| Hillsboro Firemans Memorial Park IncHillsboro | Form 990 | $305,569FY2025 |
| Old World Wisconsin Foundation IncElkhorn | Form 990 | $305,473FY2025 |
| Kids Fund IncCottage Grove | Form 990 | $304,476FY2025 |
| FR Genes Help IncWest Allis | Form 990 | $302,138FY2025 |
| Rock Lake Activity Center IncLake Mills | Form 990 | $297,166FY2025 |
| American Osteopathic Academy of Sports Medicine IncWindsor | Form 990 | $296,530FY2025 |
| Racine Symphony Orchestra Association IncRacine | Form 990 | $294,400FY2025 |
| Pink Umbrella Theater CompanyMilwaukee | Form 990 | $292,643FY2025 |
| Geneva Lake Museum IncLake Geneva | Form 990 | $292,613FY2025 |
| Environmental Park Trust ofSheboygan | Form 990 | $292,063FY2024 |
| Freedom Athletic AssociationFreedom | Form 990 | $290,025FY2025 |
| Eyewitness for Life LtdWauwatosa | Form 990 | $289,927FY2026 |
| Vesper Volunteer Fire Department IncVesper | Form 990 | $289,620FY2024 |
| Somerset Community Food Pantry IncSomerset | Form 990 | $288,616FY2024 |
| National Network of Abortion FundsSchofield | Form 990 | $286,695FY2025 |
| Engineers Foundation of Wisconsin IncJanesville | Form 990 | $284,714FY2025 |
| Fremont-Wolf River EMS LtdFremont | Form 990 | $284,027FY2025 |
| Sun Prairie Nursery School IncSun Prairie | Form 990 | $283,786FY2025 |
| Luke House IncMadison | Form 990 | $283,207FY2025 |
| Apple Pregnancy Care Center IncEau Claire | Form 990 | $281,107FY2025 |
| Milwaukee Immediate Care CorporationMilwaukee | None required | $280,589FY2015 |
| University of Wisconsin Stevens Point Paper Science Foundation IncStevens Point | Form 990 | $279,291FY2025 |