Chicago Zoological Society is a 501(c)(3) organization based in Brookfield, Illinois, registered in 1941, with $94,260,071 in FY2023 revenue. CharityIndex grades it A, and it directs about 80% of spending to programs.
Revenue (FY2023)
$94.3M
▲ 45.9% vs prior year
Animals median: $151K
Expenses (FY2023)
$75.5M
Net assets
$194.6M
Employees
743
Measures how much of every dollar spent actually reaches programs, plus what it costs to raise $100 of donations. The worse of the two measures sets the letter (85%+ to programs is an A; under $15 to raise $100 is an A), averaged over the three most recent filings. For Chicago Zoological Society: 80% to programs · $7 to raise $100 earns a A on this criterion. See the exact thresholds →
Measures whether the organization is built to last: how many months its reserves would cover expenses (3+ months earns an A-range score, but hoarding 5+ years of budget is capped) and whether it runs a surplus or a deficit. For Chicago Zoological Society: 31 mo reserves · +20% margin earns a A on this criterion. See the exact thresholds →
Checks how the organization is run, from its own Form 990: an independent board majority, a board of five or more, conflict-of-interest, whistleblower and document-retention policies, and independently audited financials. The share of disclosed checks that pass sets the letter. For Chicago Zoological Society: 6 of 6 checks met earns a A+ on this criterion. See the exact thresholds →
Counts five disclosure signals: a recent filing, a mission statement, program descriptions, a listed website, and the full expense breakdown. More disclosure, better letter. For Chicago Zoological Society: 5 of 5 disclosure signals earns a A+ on this criterion. See the exact thresholds →
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To inspire conservation leadership by connecting people with wildlife and nature.
Animal health, welfare, care and programs more than 2500 ambassadors of the animal kingdom provide our visitors with a rare opportunity to see species from around the globe and experience up close, personal encounters. czs staff provide expert care of these ambassadors, where innovations in husbandry techniques and pioneering breeding programs are part of the cuttting edge culture of excellence and integrating disciplines such as population biology, behavioral science, nutrition and veterinary science help determine the best ways to provide and continuously care for the animals. czs also incorporates models and practices from an array of animal care professionals around the world, to develop the best possible zoo-based animal care and management practices. through keeper chats and ambassador animal encounters, staff share their knowledge of the animals in their care with zoo guests, helping them gain an appreciation for all citizens of the natural world. through field programs,czs support efforts to protect and restore populations of threatened species in other parts of the world.
Education and community engagement through its education programs, czs communicates with others to engender in them a sense of ownership about living harmoniously with nature and helping save endangered species. education specialists, volunteers, curators, graphic and exhibit designers, photographers and many others contribute to sharing this information both in person and virtually. as well as reaching the daily visitors to the zoo, czss education and outreach programming reaches out to would be conservationists outside of the zoo including classrooms of school children and teachers, local libraries and community organizations to engage them in nature based programs, strengthening the bridge between education and conservation and working together to create healthy spaces for people and wildlife.
Revenue grew from $72.7M (FY2013) to $94.3M (FY2023) across 11 reported years.
Financial snapshot
Operating margin
19.9%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$265.2M
Total liabilities
$70.6M
Net assets
$194.6M
Salaries & benefits
$39.3M
52% of expenses
Board members
43
41 independent
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2023 | $94,260,071▲45.9% | $75,495,346▲14.2% | $194,603,000▲11.9% | $265,240,000▲17.3% | 990 |
| 2022 | $64,594,406▼21.4% | $66,115,083▲8.9% | $173,914,000▼3.0% | $226,030,000▼3.5% | 990 |
| 2021 | $82,219,310▲37.4% | $60,703,209▲6.8% | $179,351,000▲8.7% | $234,132,000▲10.4% | 990 |
| 2020 | $59,844,719▼15.7% | $56,812,252▼22.8% | $165,004,000▲4.5% | $212,053,000▼0.3% | 990 |
| 2019 | $70,997,747▲3.1% | $73,578,150▲0.3% | $157,848,000▲1.2% | $212,738,000▲1.6% | 990 |
| 2018 | $68,890,521▼9.1% | $73,351,460▼0.1% | $155,910,000▼5.3% | $209,343,000▼4.3% | 990 |
| 2017 | $75,789,542▲21.1% | $73,409,870▲3.6% | $164,718,000▲2.7% | $218,818,000▲2.3% | 990 |
| 2016 | $62,585,174▼13.7% | $70,851,541▼0.2% | $160,397,000▼2.3% | $213,879,000▼2.2% | 990 |
| 2015 | $72,517,383▼4.5% | $70,966,137▲1.5% | $164,145,000▼2.1% | $218,583,000▼3.3% | 990 |
| 2014 | $75,972,435▲4.5% | $69,905,435▲6.0% | $167,637,000▲3.8% | $225,946,000▲3.4% | 990 |
| 2013 | $72,670,138 | $65,947,438▲1.3% | $161,540,000▲6.0% | $218,582,000▲3.4% | 990 |
| 2012 | — | $65,078,950▲3.2% | $152,371,000▲2.0% | $211,397,000▲0.5% | 990 |
| 2011 | — | $63,046,559▼0.7% | $149,427,000▼4.0% | $210,369,000▼6.2% | 990 |
| 2010 | — | $63,477,376 | $155,731,555 | $224,208,432 | 990 |
Original Form 990 PDFs (the Form column) are served by ProPublica Nonprofit Explorer, as filed with the IRS. Create a free account to download the CSV report.
Highest-paid: Dr Michael Adkesson — $682,151 (0.90% of total expenses)
| Name | Title | Hours/week | Compensation |
|---|---|---|---|
| Dr Michael Adkesson | President and Ceo | 40 | $682,151 |
| David E Burns | Chief Financial and Admin. Officer | 40 | $378,747 |
| Mary A Cronin | Master Planning Coordinator | 24 | $352,773 |
| Cathleen Brueggemann | Sr. Vp Development | 40 | $313,637 |
| Dr Sathya K Chinnadurai | Sr. Vp Animal Health Welfare | 40 | $207,122 |
| Jennifer L Baader | Sr. Vp Govt Affairscommunity Pgms | 40 | $205,424 |
| Leah Rippe | Vp Marketing Communications | 40 | $193,805 |
| Sandra L Dornhecker | Sr. Vp Human Resources | 40 | $188,377 |
| Jerome E Johnston | Vp Guest Services Operations | 40 | $183,505 |
| Heather Bilcer | Vp Finance | 40 | $180,324 |
| Melissa Lewkowich | Vp Risk Facilities Mgmt | 40 | $177,504 |
| Amy Best | Trustee 11/23-3/24 | 2 | — |
| Barbara Grayson | Trustee | 2 | — |
| Barbara J Bradford | Trustee | 2 | — |
| Barbara Levy Kipper | Trustee | 2 | — |
| Benita S Romano | Trustee | 2 | — |
| Bert A Getz Jr | Vice-chair of the Board | 2 | — |
| Cherryl T Thomas | Chair of the Board | 2 | — |
| Darius A Gill | Trustee | 2 | — |
| Dr Bonny Chen | Trustee | 2 | — |
| Contractor | Services | Paid |
|---|---|---|
| Goettsch Partners Inc | Architectural Services | $1,569,848 |
| Two By Four | Advertising/consulting | $1,479,486 |
| Chilton Yambert Porter LLP | Legal Services | $719,244 |
| Booth Hansen | Architectural Services | $633,969 |
| Paymentech LLC | Payment Card Processing Services | $493,945 |
105 grants to Chicago Zoological Society totaling $12.7M, reported by foundations on their Schedule I filings — showing the 15 most recent.
| Grantmaker | Purpose | Year | Amount |
|---|---|---|---|
| Charities Aid Foundation America | Charitable donation | 2024 | $47,068 |
| American Online Giving Foundation Inc | General support | 2024 | $38,561 |
| Morgan Stanley Global Impact Funding Trust Inc | Unrestricted general support | 2024 | $25,000 |
| T Rowe Price Program For Charitable Giving Inc | Multiple | 2024 | $20,000 |
| The Us Charitable Gift Trust | For recipient's exempt purpose | 2024 | $10,000 |
| Greater Kansas City Community Foundation | Environment & animals | 2024 | $10,000 |
| The Blackbaud Giving Fund | General support | 2024 | $6,732 |
| Raymond James Charitable Endowment Fund | General support | 2024 | $6,200 |
| Paypal Charitable Giving Fund | General support | 2024 | $5,758 |
| National Christian Charitable Foundation | Animal protection and welfare | 2024 | $5,250 |
| Fidelity Investments Charitable Gift Fund | For grant recipient's exempt purposes | 2023 | $577,449 |
| The Chicago Community Trust | General support for programs, operations and other charitable purposes | 2023 | $451,908 |
| Ncrc Community Development Fund Inc | Illinois coronavirus fiscal recovery funds | 2023 | $250,000 |
| National Philanthropic Tr | Culture & arts | 2023 | $174,500 |
| Donor Advised Charitable Giving | Environmental and animals | 2023 | $157,925 |
3 grants totaling $28K in FY2023. All grants made by Chicago Zoological Society →
| Recipient | Purpose | Amount |
|---|---|---|
| Pangolin Conservation and Research Foundation Ohio | Pangolin conservation | $15,500 |
| Florida International University Foundation Inc | Pangolin conservation | $7,000 |
| Zoo & Aquarium Video Archive | Conservation education | $5,330 |
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Data for Chicago Zoological Society (EIN 36-2167016) comes from the IRS Business Master File and e-filed Form 990 returns, via CharityIndex. Figures reflect what the organization reported to the IRS for each fiscal year.