Updated Nov 2, 2026
Private foundations based in Williamsport, Maryland
4 grantmaking foundations headquartered in Williamsport, Maryland, holding $29M in assets. Ranked by grants paid in their latest 990-PF; 2 on this page say they accept applications. For foundations ranked by where their grants went, see local funders.
| Foundation | Grants paid | Median grant | Accepts applications | Assets |
|---|---|---|---|---|
| Jone L Bowman Foundation Incsince 2001 | $1.2M66 grants · 2024 | $2,750 | Yes | $26M |
| William G Porter Foundationsince 2002 | $91K4 grants · 2025 | $23K | Preselected only | $1.3M |
| James and Mary Schurz Foundation Incsince 2016 | $60K6 grants · 2025 | $10K | Preselected only | $1.2M |
| Albert E & Naomi B Sinnisen Foundationsince 1987 | $53K12 grants · 2025 | $3,000 | Yes | $1.2M |
Sources: IRS Business Master File (assets), ProPublica Nonprofit Explorer and IRS 990-PF e-file (grants paid, application policy). "Accepts applications" reflects the foundation's own Part XV checkbox.
Open grant programs in Maryland
All 2| Deadline | Grant | Funder | Award ceiling |
|---|---|---|---|
| Rollingno deadline | Maryland State Arts Council — Organizational GrantsStateMaryland State Arts Council | Maryland State Arts Council | Not listed |
| Rollingno deadline | Maryland Humanities — Humanities GrantsStateMaryland Humanities | Maryland Humanities | Not listed |
Common questions
How many private foundations are based in Williamsport, Maryland?
Our directory lists 4 private grantmaking foundations in Williamsport, Maryland with at least $1 million in assets, holding a combined $29M. The data comes from the IRS Exempt Organizations Business Master File and Form 990-PF.
How do I get a grant from a private foundation?
Start with foundations that already fund organizations like yours nearby. Read the grantee list on each profile, check whether the foundation accepts applications (it says so on its 990-PF), and lead with a short letter of inquiry. Many family foundations fund only organizations they already know; an introduction through a shared grantee or board member works better than a cold proposal.
Can you help us approach foundations?
Yes. Our grant writers research foundation prospects, write letters of inquiry, and build a foundation fundraising plan. Request a free consultation.