# San Mateo County Sheriffs Activities League

Youth development programs nonprofit in Redwood City, California 94063. EIN 45-0617342. Data as of November 8, 2026.

Page: https://backpr.com/find/nonprofit/450617342-san-mateo-county-sheriffs-activities-league

## Mission (the organization's own words)

> The mission of the san mateo county sheriff's activities league is to foster relationships between deputies, youth, families and the community in order to help our youth reach their full potential.

Source: Form 990, year ending Jun 2023: https://projects.propublica.org/nonprofits/organizations/450617342/202400369349301075/full

## IRS facts

- Type: Youth development programs (IRS activity code O50)
- Tax status: 501(c)(3), contributions deductible, recognized 2011
- Source: IRS Business Master File, posted October 13, 2026: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf

## Finances (IRS Form 990 e-file data)

| Year ending | Revenue | Expenses | Assets | Net assets | Employees | Volunteers | Source |
|---|---|---|---|---|---|---|---|
| Jun 2023 | $610,693 | $1,090,818 | $760,654 | $760,654 | 0 | 500 | [Form 990](https://projects.propublica.org/nonprofits/organizations/450617342/202400369349301075/full) |
| Jun 2021 | $761,423 | $764,120 | $1,051,496 | $1,051,491 | 0 | 500 | [Form 990](https://projects.propublica.org/nonprofits/organizations/450617342/202201359349301960/full) |

Expense split, year ending Jun 2023: programs $493,117 (45%), management $587,656 (54%), fundraising $10,045 (1%).

Revenue sources, year ending Jun 2023: gifts and grants $595,113, program fees $10,389, investment income $356.

Growth label: **Shrinking** (about -10% a year, Jun 2021 to Jun 2023). Growth label: we compare total revenue on the oldest and the newest return shown above. Growing means revenue rose by more than 10% a year on average, Shrinking means it fell by more than 10% a year, and Steady means a change between -10% and +10% a year. The rate is the compounded yearly average between the two returns, so it hides ups and downs in between (see the table). We only label groups with returns at least a year apart and at least $5,000 of revenue on the oldest one. This is our own calculation, not an IRS rating or a judgment of quality.

## How it compares

- Revenue rank: 2 of 13 youth development nonprofits in Redwood City.
- Revenue $1,017,635 is higher than roughly 80 to 90% of 1,664 youth development nonprofits in California; median $169,823.
- Source: IRS Business Master File, posted October 13, 2026; BackPR analysis.

## Local context

- San Mateo County, California: about 140,186 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
- 320 youth and community nonprofits in this directory in the county: 2.3 per 1,000 children.
- Licensed programs in Redwood City: 51 licensed child care centers, 6 school-age programs: https://backpr.com/find/california/redwood-city
- California rules: https://backpr.com/resources/states/california

## Questions

**What is San Mateo County Sheriffs Activities League's EIN?**

San Mateo County Sheriffs Activities League's EIN (Employer Identification Number) is 45-0617342. 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 San Mateo County Sheriffs Activities League a nonprofit?**

Yes. The IRS lists San Mateo County Sheriffs Activities League in Redwood City, California as tax-exempt under section 501(c)(3), recognized since 2011. 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 San Mateo County Sheriffs Activities League tax-deductible?**

Yes, the IRS lists gifts to San Mateo County Sheriffs Activities League 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 San Mateo County Sheriffs Activities League do?**

In its own words on its Form 990 for the year ending Jun 2023: "The mission of the san mateo county sheriff's activities league is to foster relationships between deputies, youth, families and the community in order to help our youth reach their full potential." The IRS classifies it as: Youth development programs.

**How much money does San Mateo County Sheriffs Activities League take in?**

For the year ending Jun 2023, San Mateo County Sheriffs Activities League reported total revenue of $610,693 and total expenses of $1,090,818 on its Form 990 (IRS Form 990 e-file data).

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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.