The Mill Spring Foundation 084206-000

WILMINGTON, DE EIN: 23-6230874

The Mill Spring Foundation is a private foundation based in Wilmington, Delaware, established in 1953. The foundation operates with no employees and focuses on general charitable causes through grant-making activities.

Financial Overview

From 2025 IRS Form 990-PF · View filing

Total Assets

$2.3M

+7.3% YoY

Annual Giving

$653K

-23.7% YoY

Grant Count

-8.3% YoY

Avg Grant Size

$30K

-16.8% YoY

Under IRS private-foundation payout rules, The Mill Spring Foundation 084206-000 reported a distributable amount of $224K for 2025 — the minimum it must pay out in qualifying distributions.

Research compiled by Grantable AI from public sources. Last updated April 2026.

Mission & Focus Areas

The foundation's primary funding areas include:

Education
Science and STEM education
Philanthropy, voluntarism, and grantmaking
Human services

The foundation has demonstrated particular interest in supporting educational institutions and science-focused organizations.

Grantmaking

The foundation made 17 grants in the most recent fiscal year (ending June 2025), totaling $653,000 in giving. Recent notable grants include:

Grant Range

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Geographic Focus

Where this funder awards grants

The foundation primarily funds organizations in Pennsylvania and Virginia.

Grant Distribution by State

Pennsylvania $2.8M (89%)

Delaware $260K (8%)

Virginia $90K (3%)

States

Delaware Pennsylvania Virginia

Cities

AmblerArlingtonBlue BellBlue BelllChesterChester SpringsErieFort WashingtonHavertownJenkintownLafayette HillLansdaleMiquonNew HopePfort WashingtonPhiladelkphiaPhiladelphiaPlymouth MeetingWarminsterWarrington

Financial History

Multi-year comparison from IRS filings

As of Fiscal Year Ending June 2025:

Total Assets: $2,338,451
Total Revenues: $819,584
Total Expenses: $684,323
Investment Income and Dividends: $78,317

Prior Year (FY 2024):

Investment Income and Dividends: $94,528

The foundation's revenue is primarily generated through investment income, with a 17.1% decline in investment income from the prior year.

Revenue

Expenses

Qualifying Distributions

Net Investment Income

Metric	2025	2024	2023
Total Assets	$2,338,451	$2,179,742	$2,156,506
Revenue	$819,584	$904,770	$589,558
Expenses	$684,323	$881,508	$1,136,421
Qualifying Distributions	$653,000	$856,000	$1,114,500
Net Investment Income	$802,316	$881,949	$572,067
Distributable Amount	$224,337	$203,738	$211,055

Giving Over Time

Total grant dollars and number of grants per year

Grant Insights

How this funder distributes its grants

Top Recipients

Top 10 recipients in 2025

Grant Size Distribution

96 grants across all recorded years

Giving History

Grant recipients and amounts by year

Among its reported 2025 grants, the largest include The World Affairs Council of ($200,000), Franklin Institute ($100,000), Science History Institute ($100,000).

Recipient	Purpose	Amount
GIRL SCOUTS OF EASTERN PA MIQUON, PA	GENERAL SUPPORT	$10,000
CHILDREN'S SCHOLARSHIP FUND PHILA PHILADELPHIA, PA	GENERAL SUPPORT	$5,000
CONSUMER BANKRUPTCY ASSISTANCE PHILADELPHIA, PA	GENERAL SUPPORT	$25,000
CRADLE OF HOPE JENKINTOWN, PA	GENERAL SUPPORT	$5,000
ENCHANTMENT THEATER COMPANY PHILADELPHIA, PA	GENERAL SUPPORT	$5,000
FACE TO FACE PHILADELPHIA, PA	GENERAL SUPPORT	$20,000
FAMILY PROMISE MONTCO PA AMBLER, PA	GENERAL SUPPORT	$10,000
FOUNDATION FOR FREE ENTERPRISE ERIE, PA	GENERAL SUPPORT	$10,000
FRANKLIN INSTITUTE PHILADELPHIA, PA	GENERAL SUPPORT	$100,000
GEMMA SERVICES PLYMOUTH MEETING, PA	GENERAL SUPPORT	$7,500

Leadership & Key People

Officers and directors from IRS filings

Compensation Overview

From 2025 IRS filing

From 2025 filing

Name	Title	Hours	Compensation
WILLIAM F MACDONALD JR	TRUSTEE	1	—
LESLIE MACDONALD	TRUSTEE	1	—

Frequently Asked Questions

What does The Mill Spring Foundation 084206-000 fund?

The foundation's primary funding areas include: • Education • Science and STEM education • Philanthropy, voluntarism, and grantmaking • Human services The foundation has demonstrated particular interest in supporting educational institutions and science-focused organizations.

How do I apply for a grant from The Mill Spring Foundation 084206-000?

**Grant Activity:** The foundation made 17 grants in the most recent fiscal year (ending June 2025), totaling $653,000 in giving. Recent notable grants include: • World Affairs Council of Philadelphia: $200,000 (General Support) • Science History Institute: $100,000 (General Support) • The Franklin Institute: $100,000 (General Support) **Grant Sizes:** Typical awards range from $1,000 to $500,000, with a median grant size of approximately $10,000 based on recent activity.

Where does The Mill Spring Foundation 084206-000 make grants?

The foundation primarily funds organizations in Pennsylvania and Virginia.

What size grants does The Mill Spring Foundation 084206-000 award?

In 2025, The Mill Spring Foundation 084206-000 awarded 22 grants totaling $653K — an average of about $30K per grant, based on its IRS Form 990 filings.

How much is The Mill Spring Foundation 084206-000 required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2025, The Mill Spring Foundation 084206-000 reported a distributable amount of $224K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is The Mill Spring Foundation 084206-000's EIN?

The Mill Spring Foundation 084206-000's EIN (Employer Identification Number) is 23-6230874. IRS Form 990 filing data is available on this page for 2021–2025.