Private foundation · EIN 42-1223262 · Fairfield, Iowa

William Zimmerman Foundation

Should you approach them?

Don't send a cold proposal. The foundation reports that it only gives to preselected organizations; an introduction through a current grantee or board member is the realistic route.

From the 2025 Form 990-PF: 9 grants paid, $630K total, median $60K.

Accepts applications
No
per 990-PF Part XV
Grants paid, 2025
9
$630K
Median grant
$60K
Stays in IA
—
of grants
Deadline
—
Assets
$8.0M

Grants paid in 2025

9 grants, all shown · from Form 990-PF Part XV

RecipientPurposeAmount
Center for Food SafetySan Francisco, CAGeneral support$145K
Boys and Girls Clubs of OaklandOakland, CAGeneral support$115K
Aspire Public Schools FoundationOakland, CAGeneral support$92K
Kipp Public Schools North CaliforniaOakland, CAGeneral support$83K
National Organic Coalition IncArlington, MAGeneral support$60K
African Mission Healthcare FoundationDeland, FLGeneral support$50K
Direct ReliefSanta Barbara, CAGeneral support$35K
International Rescue CommitteeNew York, NYGeneral support$25K
Stanford Health CareStanford, CAGeneral support$25K

By state: California 6 · Massachusetts 1 · Florida 1 · New York 1

About this foundation

William Zimmerman Foundation is a private grantmaking foundation in Fairfield, Iowa, administered in care of Mariposa Capital Inc, tax-exempt since 1984. Private foundations must pay out roughly 5% of their assets each year, mostly as grants to 501(c)(3) public charities.

All filings on ProPublica

Does William Zimmerman Foundation accept grant applications?

No. On its 2025 Form 990-PF the foundation checked that it only makes contributions to preselected organizations. Look for an introduction through a current grantee.

How much does William Zimmerman Foundation give each year?

In tax year 2025 it paid $630K across 9 grants, a median of $60K.

Where does William Zimmerman Foundation give?

California (6 grants), Massachusetts (1 grants), Florida (1 grants) and elsewhere, per its latest filing.

More foundations near Fairfield that accept applications

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FoundationBased inGrants paidMedian grantAccepts applicationsAssets
Eric Schwartz Fam Foundationsince 2003 Fairfield, IA $3.7M38 grants · 2024 $10KYes $33M
Iowa West Foundationsince 1994 Council Blfs, IA $16M134 grants · 2024 $25KYes $493M
Roy J Carver Charitable Trsince 1982 Muscatine, IA $17M87 grants · 2024 $121KYes $241M
Principal Financial Group Foundation Incsince 1988 Des Moines, IA $13M1 grants · 2024 $13MYes $204M
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