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Plinth

· Public charity

Reid Park Zoological Society

To connect people with animals, inspiring the protection of wild animals and wild places.

$1.5M
Granted FY2025still arriving
12
Grants FY2025still arriving
9
States reached
$1.3M
Largest
01What you fund
01100% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20172025.

Animals$8.9MScience & Tech$13kEducation$12k
02FY2025 · 12 grants

Where the money goes

Your grants by size, and where they go.

The 12 grants below total $1,420,000 — the rows itemised in this filing. The $1,453,000 headline is the total grant expense reported on the return, so the remaining $33,000 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.

By grant size · FY2025

  • Under $10k2 grants · $13k
  • $10k–50k9 grants · $157k
  • $250k+1 grant · $1.3M
$13,000
Median grant
9
States reached
$19M
Total assets
Largest grants
RecipientAmount
CITY OF TUCSON$1,250,000
NAPLES ZOO$30,000
LINCOLN PARK ZOOLOGICAL SOCIETY$30,000
ZOO CONSERVATION OUTREACH GROUP$25,000
WILDLIFE CONSERVATION SOCIETY$15,000
PHOENIX ZOO$13,000
PITTSBURGH ZOO & AQUARIUM$12,000
WILDLIFE CONSERVATION NETWORK$12,000
OKLAHOMA CITY ZOOLOGICAL TRUST$10,000
GIRAFFE CONSERVATION FOUNDATION$10,000
SAN ANTONIO ZOOLOGICAL SOCIETY$7,000
INTERNATIONAL RHINO FOUNDATION$6,000
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 15%, against an area that typically sits at 11%. 97% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%PHOENIX ZOO: $13k → 11%CITY OF TUCSON: $1.4M → 15%PITTSBURGH ZOO & AQUARIUM: $12k → 11%WILDLIFE CONSERVATION NETWORK: $12k → 10%Wildlife Conservation Society: $21k → 28%INTERNATIONAL RHINO FOUNDATION: $6k → 11%SAN ANTONIO ZOOLOGICAL SOCIETY: $7k → 16%HOUSTON ZOO CONSERVATION: $42k → 16%OKLAHOMA CITY ZOOLOGICAL TRUST: $10k → 16%NAPLES ZOO: $30k → 10%GIRAFFE CONSERVATION FOUNDATION: $10k → 13%RED PANDA NETWORK: $8k → 15%LINCOLN PARK ZOOLOGICAL SOCIETY: $30k → 14%ZOO CONSERVATION OUTREACH GROUP: $25k → 8%CITY OF TUCSON: $1.3M → 15%WILDLIFE CONSERVATION NETWORK: $8k → 10%WILDLIFE CONSERVATION SOCIETY: $18k → 28%OKLAHOMA CITY ZOOLOGICAL TRUST: $8k → 16%NAPLES ZOO: $27k → 10%GIRAFFE CONSERVATION FOUNDATION: $8k → 13%RED PANDA NETWORK: $6k → 15%LINCOLN PARK ZOOLOGICAL SOCIETY: $26k → 14%ZOO CONSERVATION OUTREACH GROUP: $24k → 8%CITY OF TUCSON: $689k → 15%WILDLIFE CONSERVATION NETWORK: $8k → 10%WILDLIFE CONSERVATION SOCIETY: $15k → 28%NAPLES ZOO: $25k → 10%GIRAFFE CONSERVATION FOUNDATION: $6k → 13%LINCOLN PARK ZOOLOGICAL SOCIETY: $25k → 14%Zoo Conservation Outreach Gr: $21k → 8%CITY OF TUCSON: $596k → 15%WILDLIFE CONSERVATION NETWORK: $5k → 10%Wildlife Conservation Society: $10k → 28%LINCOLN PARK ZOOLOGICAL SOCIETY: $25k → 14%Zoo Conservation Outreach Gr: $20k → 8%City of Tucson: $262k → 15%WILDLIFE CONSERVATION SOCIETY: $8k → 28%LINCOLN PARK ZOOLOGICAL SOCIETY: $20k → 14%ZOO CONSERVATION OUTREACH GROUP: $20k → 8%Future of Your Zoo: $110k → 15%Red Panda Network: $9k → 10%ZOO CONSERVATION OUTREACH GR: $16k → 8%University of Arizona Foundat: $12k → 15%ZOO CONSERVATION OUTREACH GR: $8k → 8%U OF A FOUNDATION: $6k → 15%Association of Zoos & Aquariu: $7k → 8%City of Tucson: $2.4M → 15%City of Tucson: $1.7M → 15%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

IL
NY
OR
PA
CA
MD
AZ
OK
TX
FL

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

98%of every dollar goes to organizations you’ve funded before.
$8.8M · 10 repeat orgs$209k to everyone else

10 repeat relationships — 8 still active in FY2025, 2 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

10
4

Total granted

$8.8M
$171k

Median revenue growth · since first grant

+49%
+83%

Still filing today

80%
50%

New vs renewed · share of each year

In FY2025, 97% of grant dollars renewed an existing relationship; $38k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’17’18’19’20’21’22’23’24’25
AnimalsInternationalEducationOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.

Backed again, and grew

  • NZ
    NAPLES ZOO INC
    3× · 2023–2025 · $82k · revenue +31%
  • WC
    Wildlife Conservation Society
    5× · 2017–2025 · $72k · revenue +59%
  • WC
    WILDLIFE CONSERVATION NETWORK INC
    5× · 2020–2025 · $38k · revenue +167%

Funded once

  • FO
    Future of Your Zoo
    one grant, 2017 · $110k
  • Houston Zoo Inc
    one grant, 2021 · $42k · revenue -2%
  • UO
    UNIVERSITY OF ARIZONA
    one grant, 2022 · $13k

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Cheyenne Mountain Zoological Society

The cheyenne mountain zoological society owns and operates the cheyenne mountain zoo. a leader in conservation, captive breeding and animal care, the zoo connects people with wildlife and wild places through experiences that inspire…

Animals
2
Red River Zoological Society

As conservation leaders, the red river zoo connects our community to nature and inspires people to help save species.

Animals
3
Zoo Outreach Organisation

Wildlife conservation, research and education.

Environment
4
Zoological Society of San Diego

San diego zoo wildlife alliance is committed to saving species worldwide by uniting our expertise in wildlife care and conservation science with our dedication to inspiring passion for nature.

Animals
5
Oak Creek Zoological Conservatory
Animals
6
Rainforest Trust

Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.

International
7
San Francisco Zoological Society

To connect all people with wildlife, inspire caring for nature, and advance conservation action.

Animals
8
Racine Zoological Society Inc

The mission of the racine zoological society is to foster an enlightening and affordable wildlife experience that improves the bond between people and nature. the society will provide for the recreation and education of the people, the…

Animals
9
Sacramento Zoological Society

The sacramento zoo inspires appreciation, respect and a connection with wildlife and nature through education, recreation and conservation.

Animals
10
Denver Zoological Foundation

Inspiring communities to save wildlife for future generations.

Animals
11
Chicago Zoological Society

To inspire conservation leadership by connecting people with wildlife and nature.

Animals
12
Conservation Society of California

Through management of oakland zoo, the conservation society of california deepens connection with animals, saves wildlife, and inspires champions for the natural world.

Animals

For reference, the grantee most central to the portfolio’s shape is Naples Zoo Inc and the most unlike its peers is Red Panda Network. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

04the grantee network

14 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 14 of the 18 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

0
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
14/14
Grantees still filing
9/14
Grew since you first funded

Where your money sits — by cause, then by grantee

CITY OF TUCSON — $8,219,962 · OtherCITY OF TUCSON+4 more — $275,100 · OtherLINCOLN PARK ZOOLOGICAL SOCIETY — $125,750 · AnimalsNAPLES ZOO INC — $81,500 · AnimalsWildlife Conservation Society — $71,600 · AnimalsHouston Zoo Inc — $41,500 · AnimalsWILDLIFE CONSERVATION NETWORK INC — $38,465 · AnimalsRED PANDA NETWORK — $22,530 · Animals+5 more — $44,500 · AnimalsGIRAFFE CONSERVATION FOUNDATION USA — $23,500 · InternationalUniversity of Arizona Foundation — $17,600 · Education
Other$8,495,062Animals$425,845International$23,500Education$17,600

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetZOO CONSERVATION OUTREACH GROUP INC — $134,100 over 7y, 7.5% of budgetLINCOLN PARK ZOOLOGICAL SOCIETY — $125,750 over 5y, 0.1% of budgetNAPLES ZOO INC — $81,500 over 3y, 0.3% of budgetWildlife Conservation Society — $71,600 over 5y, 0.0% of budgetHouston Zoo Inc — $41,500 over 1y, 0.1% of budgetWILDLIFE CONSERVATION NETWORK INC — $38,465 over 5y, 0.0% of budgetGIRAFFE CONSERVATION FOUNDATION USA — $23,500 over 3y, 0.6% of budgetRED PANDA NETWORK — $22,530 over 3y, 1.0% of budgetUniversity of Arizona Foundation — $17,600 over 2y, 0.0% of budgetARIZONA CENTER FOR NATURE CONSERVATION — $13,000 over 1y, 0.0% of budgetAMERICAN ASSOCIATION OF ZOOLOGICAL PARKS AND AQUARIUMS INC — $6,500 over 1y, 0.1% of budgetTHE INTERNATIONAL RHINO FOUNDATION — $6,000 over 1y, 0.1% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

Detroit Zoological SocietyMI15.7× affinity5 shared granteesties to 9 of 9Hover any node to trace its alignments.Compare side by side →

Open a dossier: Detroit Zoological Society · Zoological Society of San Diego · Commonwealth Zoological Corporation D/B/A Zoo New England · Jpmorgan Chase Foundation · The Bank of America Charitable Foundation Inc · National Philanthropic Trust · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization Reid Park Zoological Society funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.

2024
202122232425
no gov · 30%1%3%6%10%your share of their income ↑0%25%50%75%100%share of the org’s income from governmentmedian 2%
  • Giraffe Conservation Foundation Usa2% of income from government
no gov moneyreceives it· size = income
3get no government money at all
3report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
typical government reliance, FY2025

Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 18 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears. How we build these →

Generated from your IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

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