Robert L Zimmerman Charitable Foundation

Enterprise Holdings Foundation

Saint Louis, MO

The Enterprise Holdings Foundation supports charitable and educational nonprofits in communities where Enterprise Mobility operates, focusing on health, education, arts, and disaster relief; applicants must be actively supported by an Enterprise Mobility team member, spouse, or domestic partner. Giving varies widely: it reported 9,499 grants in 2024, but its 2025 filing showed one grant of $101.4 million, so that amount is not a typical award. Applications are accepted at any time through eligible Enterprise-affiliated applicants; the Foundation does not limit giving to preselected organizations.

Christopher Goodell Memorial Foundation

Upper Saddle River, NJ

The Plymouth Rock Assurance Foundation

Boston, MA

The Plymouth Rock Assurance Foundation supports nonprofits serving communities in need, with interests in education for underserved students, violence prevention for vulnerable youth, and health and safety advocacy for at-risk populations. Its recent filings show two grants a year totaling about $826,000–$990,000, though the recipients were in South Carolina; its stated community-support region includes Connecticut, Massachusetts, New Hampshire, New Jersey, New York, and Pennsylvania. It funds only preselected organizations and does not accept unsolicited requests.

Richard E Phelps Sr Foundation

Moline, IL

The Richard E Phelps Sr Foundation funds nonprofit organizations in Eastern Iowa, including animal-welfare and community-serving organizations; its 2025 grants also reached Illinois. In 2025, it made 14 grants ranging from $10,000 to $230,000, with a median of $17,500. It gives only to preselected organizations and does not accept unsolicited funding requests.

The Vonderhaar Family Foundation

Bettendorf, IA

The Vonderhaar Family Foundation supports charitable, educational, faith-based, food assistance, and community organizations, primarily in Iowa, with some giving to other states. Its 2025 grants ranged from $2,000 to $150,000, with a median of $5,000. The filing reports no formal application process or required materials and says eligible 501(c)(3) organizations may receive contributions.

Variety - the Children's Charity of Iowa

Des Moines, IA

Variety – the Children’s Charity of Iowa funds Iowa children’s nonprofits for tangible projects such as equipment, building improvements, accessible programs, and transportation that benefit children facing health, economic, or other challenges. Its 2025 grants had a median of about $13,000 and ranged from $5,350 to $92,965; it accepts applications annually from eligible Iowa nonprofits.