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Zoological Society of Milwaukee Cty

Milwaukee, Wisconsin · EIN 39-6077242 · Animal-Related · tax-exempt since 1956

B

Charity Clarity grade B (score 75.2 of 100), based on the Form 990 for the year ended December 2025.

Graded against 1,422 animal-related nonprofits with revenue $10M–$50M filing the same form. A = top 10%, B = next 20%, C = middle 40%, D = next 20%, F = bottom 10%.

What goes into the grade

MeasureThis charityScore (0–100)
ReservesMonths of spending covered by unrestricted net assets.5.8 months100
GovernanceBoard independence, key policies and audit, per the 990.82% of practices82
Margin stabilityHow steady the surplus or deficit is year to year.66
Revenue spreadHow much revenue rests on one type of income.91% from one source24
Filing recordOn-time, complete filings, year after year.100%100
Program spendingSelf-reported by the filer.91.6%not scored
Management costsShare of spending.1.8%not scored
Cost to raise $1Fundraising cost per dollar given.$0.07not scored

Scores compare this charity with its peer group; 100 is best. How Charity Clarity rates charities.

Year by year

20162017201820192020202120222022202320242025grey: revenue · green: spending
Year endedFormRevenueSpendingSurplusNet assetsMonths of spendingStaffGrade
Dec 2025Form 990$14.06M$16.81M−$2.75M$8.05M5.8121B
Dec 2024Form 990$13.03M$14.66M−$1.63M$10.80M8.8125B
Dec 2023Form 990$12.22M$12.85M−$628K$12.88M12.0128B
Dec 2022Form 990$2.89M$2.93M−$44K$13.13M53.7137F
Sep 2022Form 990$16.37M$11.87M$4.50M$13.17M13.3119C
Sep 2021Form 990$13.55M$13.69M−$143K$8.97M7.9106C
Sep 2020Form 990$8.85M$12.81M−$3.96M$10.59M9.9166B
Sep 2019Form 990$15.43M$19.60M−$4.17M$14.55M8.9176C
Sep 2018Form 990$16.56M$15.77M$792K$18.72M14.2160C
Sep 2017Form 990$22.35M$13.47M$8.88M$17.93M16.0150C
Sep 2016Form 990$13.55M$11.56M$1.99M$9.05M9.4135C

From the organisation’s own IRS filings. “Months of spending” is total net assets divided by a month of that year’s spending. A blank grade means that year was not rated.

Read the filings

Every figure here comes from the returns this charity filed with the IRS. These sites show the full returns and more about the organisation:

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