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Youth and community nonprofits / Washington / Mercer Island

Swimming and water sports

Olympic Cascade Aquatics Foundation

A tax-exempt swimming and water sports nonprofit with a mailing address in Mercer Island, Washington, IRS-recognized as tax-exempt since 2010.

Data as of November 8, 2026Markdown copyJSON data

IRS facts

Type: Swimming and water sports (IRS activity code N67)

Mailing city (IRS): Mercer Island, Washington 98040

EIN: 80-0484876

Tax status: 501(c)(3), eligible to receive tax-deductible donations; IRS-recognized as tax-exempt since 2010, per IRS records posted October 13, 2026.

Revenue on its latest IRS filing: $155,997 (tax year ending 2025-08)

Check its status on IRS Tax Exempt Organization Search · Filings on ProPublica Nonprofit Explorer

How it compares

2 of 13 amateur sports nonprofits in Mercer Island when sorted from largest to smallest revenue. This shows size only, not quality. Groups with no reported revenue are listed last.

Size: revenue of $155,997 is higher than roughly 40 to 50% of the 526 amateur sports nonprofits in Washington that report revenue to the IRS (the city count above also includes groups with none). The median is $169,492.

Revenue compared with similar groupsRevenue of $155,997 compared with amateur sports nonprofits in Washington: the middle 80% earn between $54,607 and $1,140,226, the median is $169,492. 10th pct$54.6Kmedian$169K90th pct$1.1M This group $156K

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 Washington groups of this type (Amateur sports, which covers several IRS activity codes). Size only, not a rating.

Around Mercer Island and its county

King County, Washington: the Census Bureau estimates about 441,421 children under 18 (July 1, 2024). This directory lists 1,342 youth and community nonprofits with a mailing ZIP code in the county, about 3.0 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 Mercer Island

8 licensed child care centers, 4 school-age programs are in state licensing records and listed in the BackPR finder. The examples below are not related to this organization.

licensed child care center

BRIGHT HORIZONS - MERCER ISLAND

Mercer Island, WA

State record

licensed child care center

COUNTRY VILLAGE DAY SCHOOL

Mercer Island, WA

State record

licensed child care center

CREATIVE LEARNING CENTER

Mercer Island, WA

State record

licensed child care center

CREATIVE LEARNING CENTER 2

Mercer Island, WA

State record

licensed child care center

EARLY WORLD MONTESSORI

Mercer Island, WA

State record

licensed child care center

FRENCH AMERICAN SCHOOL OF PUGET SOUND

Mercer Island, WA

State record

Washington background check rules for youth programs · How BackPR works for amateur sports nonprofits

Questions about Olympic Cascade Aquatics Foundation

What is Olympic Cascade Aquatics Foundation's EIN?

Olympic Cascade Aquatics Foundation's EIN (Employer Identification Number) is 80-0484876. 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 Olympic Cascade Aquatics Foundation a nonprofit?

Yes. The IRS lists Olympic Cascade Aquatics Foundation in Mercer Island, Washington as tax-exempt under section 501(c)(3), recognized since 2010. 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 Olympic Cascade Aquatics Foundation tax-deductible?

Yes, the IRS lists gifts to Olympic Cascade Aquatics 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 Olympic Cascade Aquatics Foundation do?

The IRS classifies Olympic Cascade Aquatics Foundation as: Swimming and water sports. 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).

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Free forms for amateur sports nonprofits

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More amateur sports nonprofits in Mercer Island

Sports associations and training

Friars Golf Foundation

Mercer Island, WA 98040

Tax-exempt since 2019 · EIN 83-1483086

All youth and community nonprofits in Mercer Island

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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