The William and Diane Nitterhouse
The William and Diane Nitterhouse Foundation is a private family foundation established in 1987 and based in Chambersburg, Pennsylvania. The foundation operates as a 501(c)(3) organization with no employees.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$661K
+3.8% YoY
Annual Giving
$1K
+11.4% YoY
Grant Count
3
+0.0% YoY
Avg Grant Size
$408.333
+11.4% YoY
Mission & Focus Areas
The foundation's grant-making priorities include:
- Education
- Philanthropy, Voluntarism & Grantmaking
- Health Care
The foundation focuses its giving primarily in Pennsylvania and Maryland.
Grantmaking
No application process information is available in the provided sources.
Average Grant
amount and median grant amount data not specified in available sources
How to Apply
**
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Geographic Focus
Where this funder awards grants
The foundation primarily funds organizations in Pennsylvania and Maryland.
Grant Distribution by State
Cities
Financial History
Multi-year comparison from IRS filings
Most Recent Financial Data (Fiscal Year Ending June 2025):
- Total assets: $661,304
- Total revenues: $32,257
- Total expenses: $7,762
- Investment income and dividends: $38,727
- Number of employees: 0
Prior Year Comparison (Fiscal Year Ending June 2024):
- Total assets: $921,512
- Total revenues: $21,955
- Investment income and dividends: $38,492
Contact Information:
- Address: PO Box 2013, Chambersburg, PA 17201-0813
- Telephone: 717-229-1245
- EIN: 23-2493715
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $661,304 | $636,998 | $617,805 |
| Revenue | $32,257 | $21,955 | $36,177 |
| Expenses | $7,762 | $2,696 | $1,582 |
| Qualifying Distributions | $4,441 | $1,846 | $742 |
| Net Investment Income | $34,024 | $36,213 | $33,950 |
| Distributable Amount | $75,358 | $60,134 | $53,252 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2025
Grant Size Distribution
44 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
From 2025 IRS filing
From 2025 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| WILLIAM K NITTERHOUSE | TRUSTEE | 1 | — |
| DIANE R NITTERHOUSE | TRUSTEE | 0.5 | — |
| KAREN N DILLER | TRUSTEE | 0.5 | — |
| LAURA E MARTIN | TRUSTEE | 0.5 | — |
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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