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Zoological Society of Milwaukee County

EIN 39-6077242 · Milwaukee, WI

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthWeak45 out of 100GovernanceStrong92 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE MISSION OF THE ZOOLOGICAL SOCIETY IS TO CONSERVE WILDLIFE AND ENDANGERED SPECIES, TO EDUCATE PEOPLE ABOUT THE IMPORTANCE OF WILDLIFE AND THE ENVIRONMENT, AND TO SUPPORT THE MILWAUKEE COUNTY ZOO.

Income
$14.1 million
Spending
$16.8 million
Spent on programs
73%
Reserves
1.2 months of spending
Largest source of income
donations and private grants, 91%
Employees
121
Volunteers
456
Highest pay
$345,468, president and ceo

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Weak: 45 out of 100. Higher than 3% of charities in its peer group (animals, $10m to $100m).

  • Reserves

    10 of 35

    Spendable reserves would cover 1.2 months of spending.

  • Debt

    5 of 20

    It owes 52% of what it owns.

  • Living within its means

    0 of 15

    Spending exceeded income by 20% of income.

  • Income trend

    15 of 15

    Income rose 8% on the year before.

  • Spending floor

    15 of 15

    73% of spending went to programs and raising each dollar of donations cost 7 cents.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 92 out of 100. Higher than 16% of charities in its peer group (animals, $10m to $100m).

  • Independent board

    25 of 25

    38 of 39 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    0 of 8

    Reports no written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • Independent check of accounts

    15 of 15

    Its accounts were audited by an independent accountant.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (2)
  1. $12.1 million spent. DIRECT SUPPORT OF MILWAUKEE COUNTY ZOO THROUGH CONSTRUCTION OF EXHIBITS, ANIMAL CONSERVATION, AND EDUCATIONAL PROGRAMS.
  2. $134,157 spent. RESEARCH GRANTS FOR ADVANCED STUDIES IN CONSERVATION AND ENDANGERED SPECIES.

Source: Form 990 for the year ending December 31, 2025, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated October 13, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated October 13, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2025.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since February 1956.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated October 13, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 21, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.