# The Marinchess Foundation

Youth development programs nonprofit in Mill Valley, California 94941. EIN 88-1915598. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/881915598-the-marinchess-foundation

## IRS facts

- Type: Youth development programs (IRS activity code O50)
- Tax status: 501(c)(3), contributions deductible, recognized 2023
- Source: IRS Business Master File, posted October 13, 2026: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf

## Local context

- Marin County, California: about 47,838 children under 18 (U.S. Census Bureau, July 1, 2024): https://www2.census.gov/programs-surveys/popest/datasets/2020-2024/counties/asrh/cc-est2024-agesex-all.csv
- 184 youth and community nonprofits in this directory in the county: 3.8 per 1,000 children.
- Licensed programs in Mill Valley: 14 licensed child care centers, 4 school-age programs: https://backpr.com/find/california/mill-valley
- California rules: https://backpr.com/resources/states/california

## Questions

**What is The Marinchess Foundation's EIN?**

The Marinchess Foundation's EIN (Employer Identification Number) is 88-1915598. It is the nine-digit number the IRS uses to identify the organization. Source: IRS Exempt Organizations Business Master File posted October 13, 2026.

**Is The Marinchess Foundation a nonprofit?**

Yes. The IRS lists The Marinchess Foundation in Mill Valley, California as tax-exempt under section 501(c)(3), recognized since 2023. This is from the IRS Business Master File posted October 13, 2026. Status can change, so check its current status on the IRS Tax Exempt Organization Search before you donate.

**Are donations to The Marinchess Foundation tax-deductible?**

Yes, the IRS lists gifts to The Marinchess Foundation as tax-deductible (IRS Business Master File posted October 13, 2026). How much you can deduct depends on your own taxes, and this is not tax advice. Check its current status on the IRS Tax Exempt Organization Search before you donate.

**What does The Marinchess Foundation do?**

The IRS classifies The Marinchess Foundation as: Youth development programs. It has not filed a Form 990 or 990-EZ with a mission statement that we have loaded.

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Data as of November 8, 2026. Sources: IRS Business Master File, IRS Form 990 series e-file data, U.S. Census Bureau. No officer or staff names are published.