The Mill Spring Foundation 084206-000
The Mill Spring Foundation 084206-000 is a private foundation based in Wilmington, Delaware. It supports charitable organizations through grants, with 2025 awards including general support for cultural, educational, civic, and human-services organizations.
Key facts about The Mill Spring Foundation 084206-000
In short: The Mill Spring Foundation 084206-000 gave $653K across 22 grants in 2025 (avg $30K), mostly in Pennsylvania. Source: 2025 IRS Form 990-PF.
- EIN
- 23-6230874
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $653,000
- Grants made (2025)
- 22
- Average grant
- $29,682
- Median grant
- $10,000
- Total assets
- $2,338,451
- Primary geography
- Pennsylvania (96% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Full details ↓
Data from IRS Form 990-PF, 2025; updated September 2026. Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
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
22
-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.
How The Mill Spring Foundation 084206-000 gives
- 82% of 2025 grantees were also funded in 2024. Method
- Giving grew 151% from 2022 to 2025. Method
- In 2025 it paid out 291% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2025 grants included organizations with varied missions. For example, the Science History Institute says it works to expand knowledge and challenge perspectives in the history of science, while Woodmere Art Museum says it inspires creativity and learning through Philadelphia-area art. Consumer Bankruptcy Assistance says it helps low-income Philadelphians stabilize their finances, and Face to Face says it meets basic needs and reduces suffering in its community.
Grantmaking
In 2025, the foundation made 22 grants totaling $653,000. Grants ranged from $3,000 to $200,000, with a median of $10,000. The largest listed awards were $200,000 to the World Affairs Council of Philadelphia, $100,000 each to the Franklin Institute and Science History Institute, and $50,000 to Woodmere Art Museum; all were for general support. Other listed grants included $25,000 each to Consumer Bankruptcy Assistance, Whitemarsh Foundation, and Leadership Institute, and $20,000 to Face to Face.
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Geographic Focus
Where this funder awards grants
In 2025, 96% of grant dollars went to recipients in Pennsylvania and 4% to recipients in Virginia.
Grant Distribution by State
Share of 2025 grant dollars across all 22 itemized grants.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2025, annual grant giving ranged from $254K (2021) to $1.1M (2023). In 2025 it made 22 grants totaling $653K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was The World Affairs Council of ($200K). Together the top 10 received $570K.
Grant Size Distribution
96 grants across all recorded years
The most common grant size was under $50K: 83 grants of 96 (86%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The World Affairs Council of Philadelphia, PA | General Support | $200,000 |
| Franklin Institute Philadelphia, PA | General Support | $100,000 |
| Science History Institute Philadelphia, PA | General Support | $100,000 |
| Woodmere Art Museum Philadelphia, PA | General Support | $50,000 |
| Consumer Bankruptcy Assistance Philadelphia, PA | General Support | $25,000 |
| Whitemarsh Foundation Lafayette Hill, PA | General Support | $25,000 |
| Leadership Institute Arlington, VA | General Support | $25,000 |
| Face to Face Philadelphia, PA | General Support | $20,000 |
| Wissahickon Valley Public Library Ambler, PA | General Support | $15,000 |
| Girl Scouts of Eastern PA Miquon, PA | General Support | $10,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grant dollars | Grant count |
|---|---|---|---|---|---|
| 2025 | $2,338,451 | $819,584 | $684,323 | $653,000 | 22 |
| 2024 | $2,179,742 | $904,770 | $881,508 | $856,000 | 24 |
| 2023 | $2,156,506 | $589,558 | $1,136,421 | $1,114,500 | 25 |
| 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 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists William F MacDonald Jr and Leslie MacDonald as trustees.
The Mill Spring Foundation 084206-000's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Leslie Macdonald
Trustee
On filings since 2021
1 hr/week
No compensation reported
William F. Macdonald Jr.
Trustee
On filings since 2021
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Contact
Mailing address: PO Box 70, Wilmington, DE 19899
Phone: (239) 397-5002
Frequently asked questions about The Mill Spring Foundation 084206-000
How much does The Mill Spring Foundation 084206-000 give each year?
The Mill Spring Foundation 084206-000 gave $653K across 22 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $856K across 24 grants.
What is The Mill Spring Foundation 084206-000's typical grant size?
The Mill Spring Foundation 084206-000's median grant in 2025 was $10,000, and its average grant was $29,682, across 22 grants on its 2025 IRS Form 990-PF.
Where does The Mill Spring Foundation 084206-000 give grants?
The Mill Spring Foundation 084206-000 gives mostly in Pennsylvania: 96% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Philadelphia, PA (11 grants) and Ambler, PA (2 grants).
Does The Mill Spring Foundation 084206-000 give general operating support?
Yes: 100% of The Mill Spring Foundation 084206-000's 2025 grants with a stated purpose (22 of 22) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Mill Spring Foundation 084206-000's largest grantees?
The Mill Spring Foundation 084206-000's largest 2025 grantees include The World Affairs Council of ($200,000), Franklin Institute ($100,000) and Science History Institute ($100,000), according to its 2025 IRS Form 990-PF. Together they received 61% of its itemized 2025 grant dollars.
How large is The Mill Spring Foundation 084206-000?
The Mill Spring Foundation 084206-000 reported $2.3M in total assets on its 2025 IRS Form 990-PF. It paid out $653K in qualifying distributions that year, against a required minimum of $224K (roughly 5% of its investment assets).
What does The Mill Spring Foundation 084206-000 fund?
No mission statement for the foundation is provided. Its 2025 grants included organizations with varied missions. See mission & focus areas ↑
How do I apply for a grant from The Mill Spring Foundation 084206-000?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
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.
Does The Mill Spring Foundation 084206-000 accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
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