Looking for a specific nonprofit?
Search 1.9 million IRS-registered organisations by name, EIN, sector, or location.
NTEE major group Z
Unknown Nonprofits
Givalgo Discover indexes 50 active US unknown organisations recognised by the IRS as tax-exempt under section 501(c). The list below shows the largest by reported revenue on each org's most recent Form 990 filing. Click any row for the full Due Diligence profile — IRS status, Form 990 financials, governance flags, peer benchmarks, and auto-revocation history.
Top 50 by reported revenue
From the most recent Form 990 indexed for each organisation. Click an org for full diligence detail.
| # | Organisation | Location | Revenue |
|---|---|---|---|
| 1 | MERCY CARE EIN 86-0527381 | PHOENIX, AZ | $4.9B |
| 2 | MERCY CLINIC EAST COMMUNITIES EIN 43-1771217 | CHESTERFIELD, MO | $804.6M |
| 3 | CALSTART INC EIN 95-4375022 | PASADENA, CA | $489.7M |
| 4 | ARAB FUND FOR ECONOMIC AND SOCIAL DEVELOPMENT EIN 98-0211642 | KUWAIT | $420.4M |
| 5 | SRC INC EIN 15-0589832 | N SYRACUSE, NY | $342.5M |
| 6 | COMMUNITY HOWARD REGIONAL HEALTH INC EIN 35-1865344 | KOKOMO, IN | $237.5M |
| 7 | EMORY & CHILDRENS PEDIATRIC INSTITUTE INC EIN 58-1692698 | ATLANTA, GA | $197.1M |
| 8 | PROVIDENCE MEDICAL INSTITUTE EIN 33-0283773 | RENTON, WA | $182.6M |
| 9 | CITY YEAR INC EIN 22-2882549 | BOSTON, MA | $173.1M |
| 10 | CREDIT UNIONS IN THE STATE OF WASHINGTON EIN 91-1792217 | RICHLAND, WA | $171.2M |
| 11 | DANA-FARBER INC EIN 04-3102433 | BOSTON, MA | $156.4M |
| 12 | ARCTIC SLOPE NATIVE ASSOCIATION LTD EIN 91-0873623 | BARROW, AK | $138.3M |
| 13 | TERROS INC EIN 86-0252067 | PHOENIX, AZ | $127.9M |
| 14 | COMPASS HEALTH EIN 91-1180810 | EVERETT, WA | $117.4M |
| 15 | COMMUNITY RESEARCH FOUNDATION INC EIN 95-3248148 | SAN DIEGO, CA | $116.2M |
| 16 | TURNING POINT USA INC EIN 80-0835023 | INDIANAPOLIS, IN | $115.5M |
| 17 | NEW YORK STATE TECHNOLOGY ENTERPRISE CORPORATION EIN 16-1521105 | ROME, NY | $114.9M |
| 18 | LOW INCOME HOUSING INSTITUTE EIN 94-3155150 | SEATTLE, WA | $108.6M |
| 19 | SHARE OUR STRENGTH EIN 52-1367538 | WASHINGTON, DC | $89.9M |
| 20 | INDEPENDENT ORDER OF ODD FELLOWS EIN 94-1251113 | SARATOGA, CA | $88.8M |
| 21 | LAKE COUNTY TRIBAL HEALTH CONSORTIUM INC EIN 94-2847137 | LAKEPORT, CA | $85.1M |
| 22 | BABY2BABY EIN 46-4503539 | LOS ANGELES, CA | $77.7M |
| 23 | COMUNILIFE INC EIN 13-3530299 | NEW YORK, NY | $77.5M |
| 24 | AUGUSTANA CARE EIN 41-1728753 | EDINA, MN | $75.3M |
| 25 | WILDWOOD PROGRAMS INC EIN 22-2132752 | LATHAM, NY | $72.9M |
| 26 | GALLO EMPLOYEE BENEFIT TRUST EIN 94-2334925 | MODESTO, CA | $70.0M |
| 27 | FISHER HOUSE FOUNDATION INC EIN 11-3158401 | ROCKVILLE, MD | $70.0M |
| 28 | HAMASKPIK OF ROCKLAND COUNTY INC EIN 13-3978518 | MONSEY, NY | $67.9M |
| 29 | NATIONAL ASSOCIATION OF COUNTY AND CITY HEALTH OFFICIALS EIN 52-1426663 | WASHINGTON, DC | $62.3M |
| 30 | ARIZONA BEHAVIORAL HEALTH CORPORATION EIN 86-0888064 | PHOENIX, AZ | $62.0M |
| 31 | MORTGAGE BANKERS ASSOCIATION OF AMERICA EIN 36-1505650 | WASHINGTON, DC | $61.8M |
| 32 | DAVE THOMAS FOUNDATION FOR ADOPTION EIN 31-1356151 | DUBLIN, OH | $61.6M |
| 33 | CENTRAL CITY COMMUNITY HEALTH CENTER INC EIN 95-4492570 | MONTEREY PARK, CA | $60.3M |
| 34 | CHILDRENS MIRACLE NETWORK EIN 87-0387205 | SALT LAKE CTY, UT | $59.7M |
| 35 | JAEB CENTER FOR HEALTH RESEARCH INC EIN 59-3187624 | TAMPA, FL | $58.7M |
| 36 | AMERICAN INDEPENDENT FOUNDATION EIN 33-1137541 | WASHINGTON, DC | $58.6M |
| 37 | TACO BELL FOUNDATION INC EIN 33-0523542 | IRVINE, CA | $56.3M |
| 38 | UNIDOSUS EIN 86-0212873 | WASHINGTON, DC | $53.5M |
| 39 | BRONSON SOUTH HAVEN HOSPITAL EIN 38-1676780 | KALAMAZOO, MI | $47.9M |
| 40 | CHILD AND FAMILY SERVICE EIN 99-0073483 | EWA BEACH, HI | $41.0M |
| 41 | IOWA DONOR NETWORK EIN 42-1414092 | NORTH LIBERTY, IA | $40.5M |
| 42 | INDEPENDENT OPPORTUNITIES INC OF OKLAHOMA EIN 74-2547238 | TULSA, OK | $39.7M |
| 43 | SOUTH COAST CHILDRENS SOCIETY INC EIN 33-0521169 | MISSION VIEJO, CA | $39.3M |
| 44 | JULIA DYCKMAN ANDRUS MEMORIAL INC EIN 13-2793295 | YONKERS, NY | $38.7M |
| 45 | NEXTGEN CLIMATE ACTION EIN 46-1957345 | SAN FRANCISCO, CA | $38.5M |
| 46 | BIOVERSITY INTERNATIONAL EIN 98-0142916 | ITALY | $38.2M |
| 47 | CONTAINER ROYALTIES SUPPLEMENTAL EIN 57-0551096 | CHARLESTON, SC | $38.2M |
| 48 | NEW AMERICA FOUNDATION EIN 52-2096845 | WASHINGTON, DC | $37.2M |
| 49 | WELLPOINT CARE NETWORK INC EIN 39-1338354 | MILWAUKEE, WI | $37.2M |
| 50 | SELF ENHANCEMENT INC EIN 93-1086629 | PORTLAND, OR | $36.3M |
By state
7,873 organisations across 51 categories.
- 1,40517.8%
- 5466.9%
- 5306.7%
- 4235.4%
- 3884.9%
- 3214.1%
- 2262.9%
- 2202.8%
- 2062.6%
- 1952.5%
- 1852.3%
- 1832.3%
Featured organizations
A representative cross-section beyond the revenue ranking — from national institutions to small community groups and private foundations — chosen for complete, recent IRS filings.
- SID W RICHARDSON FOUNDATIONFORT WORTH, TX · $100M–$1B in assets
- AVI CHAI FOUNDATIONNEW YORK, NY · $100M–$1B in assets
- KORET FOUNDATIONSAN FRANCISCO, CA · $100M–$1B in assets
- VISTA HERMOSAPASCO, WA · $100M–$1B in assets
- HARDESTY FAMILY FOUNDATION INCTULSA, OK · $100M–$1B in assets
- KOLATCH FAMILY FOUNDATIONENGLEWOOD, NJ · $100M–$1B in assets
- THE RILEY FOUNDATIONMERIDIAN, MS · $100M–$1B in assets
- ONION FOUNDATIONWAYNE, ME · $10M–$100M in assets
- MANDARICH FAMILY FOUNDATIONDENVER, CO · $10M–$100M in assets
- FOERSTER BERNSTEIN FOUNDATIONNORWALK, CT · $10M–$100M in assets
- ABUNDANT LIFE FOUNDATIONHENDERSON, NV · $10M–$100M in assets
- ANDERSON VALLEY FOUNDATIONHASTINGS, NE · $10M–$100M in assets
- REAMS FOUNDATION INCCHARLESTON, SC · $10M–$100M in assets
- SARAH K DECOIZART PERPETUAL CHARITABLE TR ART 10CHICAGO, IL · $10M–$100M in assets
- LORBER FAMILY FOUNDATIONBOSTON, MA · $10M–$100M in assets
- STERLING COGADSDEN, AL · $10M–$100M revenue
- FW MURPHY FAMILY FOUNDATIONWILMINGTON, DE · $10M–$100M in assets
- PETER BECKER COMMUNITYHARLEYSVILLE, PA · $10M–$100M revenue
- LARRY L PRINCE FAMILY FOUNDATION INCATLANTA, GA · $10M–$100M in assets
- COPPER RIVER NATIVE ASSOCIATIONGLENNALLEN, AK · $10M–$100M revenue
- G KENNETH AND ANN BAUM PHILANTHROPIC FUNDSTILWELL, KS · $10M–$100M in assets
- GOOD SHEPHERD MEDICATION MANAGEMENTMEMPHIS, TN · $10M–$100M revenue
- VALLEY HEALTH CARE INCMILL CREEK, WV · $10M–$100M revenue
- ELISE P HUNT TRUST 3-82379SAINT LOUIS, MO · $10M–$100M in assets
- YUM BRANDS FOUNDATION INCLOUISVILLE, KY · $10M–$100M in assets
- DAVID BRUCE SMITH FOUNDATION INCARLINGTON, VA · $10M–$100M in assets
- THE HOUSING COMPANYBOISE, ID · $10M–$100M revenue
- FAMILIES & CHILDREN TOGETHER INCEL DORADO, AR · $10M–$100M revenue
- INSPIRIT FUNDLANDER, WY · $10M–$100M in assets
- COLLEGE UNBOUNDPROVIDENCE, RI · $10M–$100M revenue
- METROPOLITAN AFFORDABLE HOUSING CORPORATIONEUGENE, OR · $1M–$10M revenue
- RAGLAND FAMILY FOUNDATIONCINCINNATI, OH · $1M–$10M in assets
- CHILD CARE CHOICES INCWAITE PARK, MN · $1M–$10M revenue
- NORTH OAKLAND RESIDENTIAL SERVICES INCOXFORD, MI · $1M–$10M revenue
- COMITE DE BIENESTAR INCSAN LUIS, AZ · $1M–$10M revenue
- OE ENTERPRISES INCORPORATEDHILLSBOROUGH, NC · $1M–$10M revenue
- OPPORTUNITIES UNLIMITEDSIOUX CITY, IA · $1M–$10M revenue
- MARSHALL-STARKE DEVELOPMENT CENTER INCPLYMOUTH, IN · $1M–$10M revenue
- DOUG AND GAY LANE FOUNDATIONBOCA GRANDE, FL · $1M–$10M in assets
- CORPORACION EDUCATIVA RAMON BARQUINGUAYNABO, PR · $1M–$10M revenue
- YES HOUSING INCALBUQUERQUE, NM · $1M–$10M revenue
- TIESZEN MEMORIAL HOME INCMARION, SD · $1M–$10M revenue
- MELANOMA RESEARCH FOUNDATIONWASHINGTON, DC · $1M–$10M revenue
- LISTEN LOVE IS SHARING THE EXCEPTIONAL NEEDSGRAND FORKS, ND · $1M–$10M revenue
- BRENT HOUSE CORPORATIONNEW ORLEANS, LA · $1M–$10M revenue
- SAVE A CHILDS HEART FOUNDATION US I NCROCKVILLE, MD · $1M–$10M revenue
- BOYS AND GIRLS CLUBS OF MAUI INCKAHULUI, HI · $1M–$10M revenue
- HOME HEALTH CARE AND COMMUNITY SERVICES INCKEENE, NH · $1M–$10M revenue
- KLEINHEINZ FAMILY FOUNDATION FOR THE ARTS AND EDUCATIONFORT WORTH, TX · $100M–$1B in assets
- DONNA AND MARVIN SCHWARTZ FOUNDATIONNEW YORK, NY · $100M–$1B in assets
- ASIAN PACIFIC COMMUNITY FUND OF SOUTHERN CALIFORNIALOS ANGELES, CA · $1M–$10M revenue
- VADON FOUNDATIONSEATTLE, WA · $10M–$100M in assets
- ROBERT TREAT ACADEMY CHARTER SCHOOL INCNEWARK, NJ · $10M–$100M revenue
- BUTLER SNOW OMARA STEVENS & CANNADA FOUNDATIONRIDGELAND, MS · $100K–$1M in assets
- MID COAST HUNGER PREVENTION PROGRAM INCBRUNSWICK, ME · $1M–$10M revenue
- FOUNDATION FOR HUMAN ENRICHMENT DBA SOMATIC EXPERIENCING INTLBOULDER, CO · $1M–$10M revenue
- WESTBROOK FOUNDATION INCWESTBROOK, CT · $1M–$10M in assets
- CLARK COUNTY PUBLIC EDUCATION FOUNDATION INCLAS VEGAS, NV · $1M–$10M revenue
- PROSPECT HILL CEMETERY HISTORICAL SITE DEVELOPMENT FOUNDATIONOMAHA, NE · $100K–$1M in assets
- WEST SUBURBAN COMMUNITY PANTRY INCWOODRIDGE, IL · $1M–$10M revenue
Frequently asked questions about Unknown nonprofits
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
Frequently asked questions about Unknown nonprofits
Answers compiled from the IRS Form 990, BMF, Pub 78, and Auto-Revocation List.
- What counts as a Unknown nonprofit?
- Unknown nonprofits are US tax-exempt organisations classified under the IRS National Taxonomy of Exempt Entities (NTEE) major group "Z" (Unknown). The IRS assigns the NTEE code based on the organisation's primary purpose as reported on Form 990.
- How are unknown nonprofits regulated?
- Unknown nonprofits with annual gross receipts of $50,000 or more must file Form 990 (or 990-EZ) annually with the IRS. Smaller orgs file the 990-N e-Postcard. Failure to file for three consecutive years triggers automatic revocation of tax-exempt status.
- How can I verify a unknown nonprofit's tax-exempt status before granting?
- Cross-reference the organisation against the IRS Auto-Revocation List AND IRS Publication 78. Pub 78 confirms whether donations are tax-deductible; the Auto-Revocation List confirms whether the org has lost its status for non-filing. Givalgo Discover surfaces both signals on every org profile.
- Where can I find Form 990 data for unknown nonprofits?
- Each organisation's Form 990 — including financials, governance, programs, and grants — is publicly available from the IRS. Givalgo Discover aggregates the full corpus (Form 990, 990-EZ, 990-PF, 990-N) and provides a free profile for every IRS-registered unknown nonprofit.
- What's the difference between a 501(c)(3), 501(c)(4), and 501(c)(6)?
- 501(c)(3) is the standard tax-exempt classification for public charities and private foundations; contributions are tax-deductible. 501(c)(4) covers civic-league / social-welfare orgs; contributions are not deductible. 501(c)(6) covers business leagues and chambers of commerce. The IRS subsection code on each Givalgo Discover profile identifies the exact classification.