licensed child care center
ABC PRESCHOOL & DAYCARE
Castro Valley, CA
Youth and community nonprofits / California / Castro Valley
Baseball and softball
Extreme Baseball
A tax-exempt baseball and softball nonprofit with a mailing address in Castro Valley, California, IRS-recognized as tax-exempt since 2021.
IRS facts
Type: Baseball and softball (IRS activity code N63)
Mailing city (IRS): Castro Valley, California 94546
EIN: 30-0857444
Tax status: 501(c)(3), eligible to receive tax-deductible donations; IRS-recognized as tax-exempt since 2021, per IRS records posted October 13, 2026.
Revenue on its latest IRS filing: $52,655 (tax year ending 2025-12)
Check its status on IRS Tax Exempt Organization Search · Filings on ProPublica Nonprofit Explorer
How it compares
4 of 15 amateur sports nonprofits in Castro Valley when sorted from largest to smallest revenue. This shows size only, not quality. Groups with no reported revenue are listed last.
Size: revenue of $52,655 is higher than roughly 10 to 20% of the 2,432 amateur sports nonprofits in California that report revenue to the IRS (the city count above also includes groups with none). The median is $143,571.
Our analysis of the IRS Business Master File (posted October 13, 2026), using each group's latest reported revenue. Groups are sorted by revenue and split into ten equal bands, using all California groups of this type (Amateur sports, which covers several IRS activity codes). Size only, not a rating.
Around Castro Valley and its county
Alameda County, California: the Census Bureau estimates about 316,637 children under 18 (July 1, 2024). This directory lists 818 youth and community nonprofits with a mailing ZIP code in the county, about 2.6 per 1,000 children. The count includes PTAs, arts and day care groups, so it is not a measure of places for kids.
This group's ZIP code is matched to the county that holds most of its area, so counts are approximate. County figures come from the Census Bureau's Vintage 2024 population estimates.
Licensed programs in Castro Valley
14 licensed child care centers, 11 school-age programs are in state licensing records and listed in the BackPR finder. The examples below are not related to this organization.
school-age program
ABC PRESCHOOL & DAYCARE
Castro Valley, CA
licensed child care center
ACHIEVERS
Castro Valley, CA
school-age program
ADVENTURE TIME - INDEPENDENT
Castro Valley, CA
school-age program
ADVENTURE TIME - JENSEN RANCH
Castro Valley, CA
school-age program
ADVENTURE TIME - PROCTOR
Castro Valley, CA
California background check rules for youth programs · How BackPR works for amateur sports nonprofits
Questions about Extreme Baseball
What is Extreme Baseball's EIN?
Extreme Baseball's EIN (Employer Identification Number) is 30-0857444. 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 Extreme Baseball a nonprofit?
Yes. The IRS lists Extreme Baseball in Castro Valley, California as tax-exempt under section 501(c)(3), recognized since 2021. 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 Extreme Baseball tax-deductible?
Yes, the IRS lists gifts to Extreme Baseball 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 Extreme Baseball do?
The IRS classifies Extreme Baseball as: Baseball and softball. It has not filed a Form 990 or 990-EZ with a mission statement that we have loaded.
Do you run this organization?
You can add your programs, season dates, ages, prices, registration link and logo to this page, or ask us to remove it. BackPR's free plan for 501(c)(3)s handles online registration, payments, waivers and attendance. No subscription and no BackPR fee on what families pay (card processing fees from Stripe still apply).
Add details to this page · Remove this page · About the free plan
Free forms for amateur sports nonprofits
More amateur sports nonprofits in Castro Valley
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Source: IRS Exempt Organizations Business Master File, posted October 13, 2026. We list 501(c)(3) organizations whose IRS activity code is youth development, amateur sports, camps and recreation, parent-teacher groups, children's services, child day care or arts education. We show the city and ZIP code only, never a street address or contact person. A listing is not an endorsement.
Data as of November 8, 2026. Sources: IRS Business Master File (posted October 13, 2026), U.S. Census Bureau population estimates (July 1, 2024), state child care licensing records in the BackPR finder. Growth labels, ranks and percentiles are BackPR's own calculations.
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