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City Island Oyster Reef Inc

See schedule o.

Environment Bronx, NY EIN: 843304186 (IRS) Sign up to see website
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76
Integrity Assessment
Strong transparency
76/100 · methodology

About City Island Oyster Reef Inc

See schedule o.

Founded
Headquarters
Bronx, NY
Foundation type
Supporting organization (509(a)(3))
NTEE code
C99
IRS subsection
501(c)(03)
Ruling date
Size
medium

Verified certifications

Confirmed against the issuing authority - not self-reported.

IRS Tax-Deductible since 2019

Mission

See schedule o.

Focus areas & reach

· What they work on and where

How it stacks up against peers

· vs. 8 similar environment in United States
Program spending This charity: 91%
Peer average: 77%
Integrity Assessment This charity: 76
Peer average: 90

Concerns

· None found
No red flags found
Screened for IRS revocation history, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

Where every $1 goes

· FY2024 · IRS 990 (FY2024)
$0.92
Program$0.92
91% to programs beats the peer average (77%) and beats the Charity Navigator "highly efficient" threshold (75%).

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

Based on the records currently verified by GiveRadar, City Island Oyster Reef Inc has a complete profile, cross-referenced across 4 independent sources including the IRS.

  • GiveRadar has cross-referenced this organization across 4 independent sources, led by the IRS - more than 97% of similar organizations. See the sources
  • GiveRadar has verified more about this organization than about 82% of the 30,143 environment charities in the United States it tracks, because GiveRadar has verified its financial disclosures and its registration. Most of those have little verified data on record yet. View this cohort
  • It has more complete contact information than nearly all similar organizations, with a verified website, email, phone and address on record. See national comparisons
GiveRadar has verified
  • government registration
  • financial records (5 filed years)
  • disclosed leadership
  • a website
  • a contact email
  • a donation page
Not yet verified by GiveRadar
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

City Island Oyster Reef Inc is a registered environment nonprofit based in Bronx, NY, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 2019 and has been operating for 7 years. Its EIN is 843304186. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 76/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $99K in annual revenue. 36 officers and directors are publicly disclosed. No red flags have been detected.

City Island Oyster Reef Inc's EIN (Employer Identification Number) is 843304186. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.

City Island Oyster Reef Inc has a GiveRadar Integrity Assessment of 76/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 76 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 91% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for environment charities in United States is 90/100.

City Island Oyster Reef Inc is located in Bronx, NY, United States. The organization was established in 2019 and has been active for 7 years.

Based on official tax filings, City Island Oyster Reef Inc has $99K in annual revenue. It allocates 91% of expenses to programs and services. This is above the average of 77% for environment charities in United States. Its revenue is below the peer average of $2M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

City Island Oyster Reef Inc is classified as an Environment organization, registered in United States. It operates as a Supporting organization (509(a)(3)). By size, it is categorized as a medium organization. It has $99K in annual revenue. The organization has 36 disclosed officers and directors.

No red flags have been detected for City Island Oyster Reef Inc. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.

According to GiveRadar's records, City Island Oyster Reef Inc holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 91% of expenses go to programs (the peer average is 77%). You can donate directly through their official donation page linked on their GiveRadar profile. GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

Among environment charities registered in United States: It allocates 91% of expenses to programs, above the peer average of 77%. Its annual revenue of $99K is below the peer average of $2M.

Yes, donations to City Island Oyster Reef Inc are generally tax-deductible in the United States. City Island Oyster Reef Inc is a 501(c)(3) tax-exempt organization. Its EIN is 843304186, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.

Annual revenue
$10K-$100K
91% to programs
Source: IRS 990 (FY2024) why this matters
Unlock exact figures

Filing history

5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.

Years on record: FY2024, FY2023, FY2022, FY2021, FY2020.
Financial details are free - with a GiveRadar account

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Taxes

Tax-deductibility for donors

Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Staff & volunteers

From filings and published profiles

Employees
4

Leadership

From FY2024 filing

BA
Barbara Z•••
Treasurer

Officers & trustees (15)

Source: Public filings

See full names, roles, and stories

15 officers and trustees on file - free with a GiveRadar account.

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Latest news

From global news sources

8 articles found

From news sources and the organization. Shown for transparency; news never affects the integrity score.

Activity timeline

Filings and press mentions, merged

Opinion: When It Comes to NYC’s Waterways, Don’t Let Oysters Do All the Dirty Work - citylimits.org
Sep 2025
citylimits.org
Rhode Island Designer Turns Seafood Shell Waste into Furniture and Building Materials - Good News Network
Jun 2025
www.goodnewsnetwork.org
Form filed
$0.1M revenue
FY2024
IRS 990
Form filed
$0.5M revenue
FY2023
IRS 990
Bringing Oysters Back to the Bronx - Fordham Now
Dec 2023
now.fordham.edu
Velázquez, Marmorato to square off in City Island ahead of hotly contested Council District 13 vote - Bronx Times
Oct 2023
www.bxtimes.com
Old Shells Are Bringing New Oysters to the Waters of City Island - THE CITY
Jul 2023
www.thecity.nyc
Form filed
$0.1M revenue
FY2022
IRS 990
Form filed
$0.1M revenue
FY2021
IRS 990
As Flooding Becomes the Norm, City Island Residents Take Reins on Resiliency - citylimits.org
Oct 2021
citylimits.org
City Island Sandy reconstruction projects - Spectrum News NY1
Oct 2021
ny1.com
Form filed
$0.0M revenue
FY2020
IRS 990
Biaggi and City Island residents discuss water quality in Mount Vernon and its effects on the Bronx - Bronx Times
Oct 2020
www.bxtimes.com

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Cause areas in United States

How many charities work in each area, with this charity's area highlighted.

Human Services 322,679
Education 195,586
Arts & Culture 133,128
Advocacy & Civil Rights 128,026
Religion 114,636
Health 98,862
Community Development 56,086
Youth Development 53,450
Environment this charity 30,143
See all cause areas in United States

Most common causes in United States

Causes charities work on most.

Community Development 235,146
Education 159,016
Religion 103,741
Arts & Culture 101,203
Human Rights 76,926
Health 65,250
Youth Development 47,775
Animal Welfare 32,425

Sources and verification

Registration and legal identity
Internal Revenue Service (IRS) - Tax Exempt Organization Search
Financial filings
IRS Form 990 filings - Fiscal year 2024 most recent on file.
Officers and trustees
Internal Revenue Service (IRS) - Tax Exempt Organization Search - 36 disclosed in the public registry.
News and media coverage
GDELT Project + Google News
Supplementary verification
Charity Navigator

Data freshness

Last updated
Jun 12, 2026
Registry checked
Jun 6, 2026
Profile completeness
85%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 9
  • Financial data · FY2024 on record
  • Named leadership · 36 officers on file
  • Government registration · Registered with an official registry
  • Mission statement · Published
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
  • Tax-deductibility · Verified
  • Founding date · 2019
Not available · 2
  • Executive pay
    Top-officer pay not disclosed
  • Programs & activities
    No named programs listed by the charity

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about City Island Oyster Reef Inc

What is City Island Oyster Reef Inc?
City Island Oyster Reef Inc is a environment supporting organization (509(a)(3)) based in Bronx, United States. See schedule o.
When was City Island Oyster Reef Inc founded?
City Island Oyster Reef Inc was founded in 2019.
Who leads City Island Oyster Reef Inc?
Barbara Zahm serves as Treasurer.
Where is City Island Oyster Reef Inc located?
Headquartered in Bronx, NY, United States.
What is City Island Oyster Reef Inc's annual budget?
Annual revenue for fiscal year 2024 is approximately $10K-$100K. 91% of expenses go to program services.
Is City Island Oyster Reef Inc trustworthy?
City Island Oyster Reef Inc has a GiveRadar Integrity Assessment of 76 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is City Island Oyster Reef Inc's registration number?
IRS EIN: 843304186.
What is City Island Oyster Reef Inc's website?
http://cioysterreef.org