Houston Zoo Inc is a 501(c)(3) organization based in Houston, Texas, registered in 1967, with $82,689,282 in FY2024 revenue. CharityIndex grades it A, and it directs about 86% of spending to programs.
Revenue (FY2024)
$82.7M
▲ 0.2% vs prior year
Animals median: $151K
Expenses (FY2024)
$70.3M
Net assets
$332.4M
Employees
605
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 Houston Zoo Inc: 86% to programs · $18 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 Houston Zoo Inc: 57 mo reserves · +15% 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 Houston Zoo Inc: 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 Houston Zoo Inc: 5 of 5 disclosure signals earns a A+ on this criterion. See the exact thresholds →
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To connect communities with animals, inspiring action to save wildlife.
Wildlife conservation is a core hzi mission. in 2024, the zoo supported 33 long-term partnerships across 17 countries, linking on-site animal care with global field conservation. regional efforts focused on texas species of concern, including: - houston toad conservation: release of 1,865,700 eggs, 4,300 tadpoles, and 430 toadlets in bastrop county in partnership with usfws and texas state university. - attwater's prairie chicken conservation: breeding and release of 58 birds into native grasslands. - sea turtle conservation: provided medical care for over 50 injured or stranded wild sea turtles along the texas coast. (continued on schedule o)international wildlife conservation programs emphasized species in the zoo's collection, exemplified by birds of the world, which connects guests to partners protecting endangered avian species globally. other efforts included protecting jaguars, giant anteaters, and tapirs in brazil's pantanal and reducing marine wildlife threats from plastic pollution in the galapagos islands and the gulf coast. through these initiatives, hzi advances wildlife conservation locally and globally while engaging houstonians in meaningful action.
The houston zoo's conservation education department engaged 725,235 participants in 2024 through camps, school partnerships, interpretive programs, and community outreach, fostering wildlife-saving actions. key initiatives included: - camp zoofari: immersive summer sessions for children ages 6-12, with 2,040 campers enrolled and scholarships provided to families with demonstrated financial need. - zoo crew teen program: provided conservation skills training for 68 high school students, fostering leadership in wildlife conservation. (continued on schedule o) - school partnerships and free field trips: supported 88,000 k-12 students through free field trips, with 80% from title i schools, many in federally recognized justice40 communities. additionally, 17,359 college students from four local colleges visited for free, and 12,031 participants engaged in pre-scheduled programs, including camp zoofari, zoo crew, overnights, animal encounters, and pro-bono community outreach. - on-site interpretation: staff and volunteers facilitated 250,000 guest interactions, promoting conservation awareness through storytelling and demonstrations. these programs underscore hzi's commitment to accessible, impactful conservation education.
Revenue grew from $50.1M (FY2013) to $82.7M (FY2024) across 12 reported years.
Financial snapshot
Operating margin
15.0%
Revenue exceeded expenses in the latest fiscal year.
Total assets
$380.8M
Total liabilities
$48.4M
Net assets
$332.4M
Salaries & benefits
$32.6M
46% of expenses
Board members
33
33 independent
| Fiscal year | Revenue | Expenses | Net assets | Total assets | Form |
|---|---|---|---|---|---|
| 2024 | $82,689,282▲0.2% | $70,313,815▲11.9% | $332,381,545▲4.5% | $380,810,630▲0.2% | 990 |
| 2023 | $82,522,000▲21.1% | $62,823,859▲15.9% | $318,085,248▲8.2% | $379,916,374▲8.9% | 990 |
| 2022 | $68,161,300▼19.3% | $54,219,079▲11.9% | $294,035,147▲3.5% | $348,888,874▲6.5% | 990 |
| 2021 | $84,488,792▲55.4% | $48,433,202▲6.8% | $284,050,047▲13.7% | $327,462,677▲14.7% | 990 |
| 2020 | $54,380,451▼26.4% | $45,355,956▼14.3% | $249,756,623▲4.3% | $285,541,904▲12.7% | 990 |
| 2019 | $73,932,331▼28.4% | $52,896,982▲6.1% | $239,395,069▲10.3% | $253,408,258▲12.0% | 990 |
| 2018 | $103,228,386▲44.7% | $49,858,185▲2.6% | $216,950,654▲28.9% | $226,345,789▲30.5% | 990 |
| 2017 | $71,339,275▲26.9% | $48,596,261▲0.3% | $168,322,910▲16.5% | $173,437,216▲14.7% | 990 |
| 2016 | $56,232,922▲11.7% | $48,461,175▲12.1% | $144,447,154▲5.1% | $151,219,434▲6.3% | 990 |
| 2015 | $50,360,218▼2.8% | $43,233,413▲11.2% | $137,483,446▲4.7% | $142,244,213▲2.9% | 990 |
| 2014 | $51,829,881▲3.4% | $38,895,281▲11.9% | $131,313,195▲10.4% | $138,191,853▲11.8% | 990 |
| 2013 | $50,120,783 | $34,759,764▲5.2% | $118,906,245▲15.5% | $123,654,723▲15.2% | 990 |
| 2012 | — | $33,049,617▲9.0% | $102,980,923▲23.0% | $107,381,194▲22.5% | 990 |
| 2011 | — | $30,309,035▲24.3% | $83,694,867▲4.4% | $87,684,993▲6.9% | 990 |
| 2009 | — | $24,392,024 | $80,149,221 | $82,044,700 | 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: Lee Ehmke — $691,246 (0.98% of total expenses)
| Name | Title | Hours/week | Compensation |
|---|---|---|---|
| Lee Ehmke | President & Ceo | 40 | $691,246 |
| Sheryl Kolasinski | Coo | 40 | $374,936 |
| Jeri Nordbrock | Cfo | 40 | $332,237 |
| Roberto Espinosa | Chief Advancement Officer | 40 | $313,227 |
| Kristin Finney | Chief Human Resources Officer | 40 | $301,730 |
| Trazanna Moreno | Senior Vp Marketing, Communications | 40 | $282,556 |
| Kevin Hodge | Vp Animal Programs | 40 | $241,498 |
| Lisa Marie Avendano | Deputy Dir., Chief Mission Officer | 40 | $222,535 |
| Benjamin Jones | Vp Conservation and Education | 40 | $216,513 |
| James Hutchinson | Sr. Dir. Finance & Accounting | 40 | $194,019 |
| Abraham George | Director of Technology | 40 | $174,428 |
| Adrian Cavazos | Avp, Business Operations | 40 | $172,867 |
| Audra Jesudason | Avp, Development | 40 | $160,789 |
| Mark Hoffman | Sr. Dir. Plan, Design, Engineering | 40 | $152,464 |
| Alie Pruner | Board Member | 1 | — |
| Anne Clutterbuck | Board Member | 1 | — |
| Anne Duncan | Member Emeritus | 1 | — |
| Austin Young | Member Emeritus | 1 | — |
| Bas Solleveld | Board Member | 1 | — |
| Beto Cardenas | Board Member | 1 | — |
| Contractor | Services | Paid |
|---|---|---|
| Tellepsen Builders | Construction | $12,529,229 |
| O'donnell Snider Construction LLC | Construction | $5,658,404 |
| Ssa Group LLC | Food Services | $5,444,720 |
| Bright Lights of Houston | Lighting | $1,658,396 |
| Strike Marketing | Advertising | $1,299,275 |
210 grants to Houston Zoo Inc totaling $10.5M, reported by foundations on their Schedule I filings — showing the 15 most recent.
23 grants totaling $1.0M in FY2024 — showing the 15 largest. All grants made by Houston Zoo Inc →
| Recipient | Purpose | Amount |
|---|---|---|
| Baylor College of Medicine | Eehv research project | $341,112 |
| The Dian Fossey Gorilla Fund International | Gorilla conservation, support for rwandan women | $100,000 |
| Mgvp Inc | Support for gorilla doctors | $100,000 |
| Texas A&m Agrilife Research | Houston toad conservation support | $76,601 |
| Boy Scouts of America | Houston toad conservation support | $68,438 |
| The International Rhino Foundation | Operating support | $40,000 |
| International Crane Foundation Inc | Operating support | $40,000 |
| Save Giraffes Now | Operating support | $32,300 |
| Texas Conservation Alliance | Operating support | $25,000 |
| Uc Davis School of Veterinary Medicine | Dr. marcy with patagonia marine wildlife | $25,000 |
| Fossil Rim Wildlife Center Inc | Attwater prairie chicken conservation support | $23,257 |
| American Bird Conservancy | Splash environmental conservation support | $20,000 |
| Wildlife Conservation Network Inc | Operating support | $20,000 |
| Knoxville Zoological Gardens Inc | Safe tortoise program | $20,000 |
| International Elephant Foundation | Operating support | $20,000 |
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Data for Houston Zoo Inc (EIN 74-1590271) 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.