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Strompolos Family Foundation at a glance

· Private foundation

Strompolos Family Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$277k
Granted FY2025still arriving
17
Grants FY2025still arriving
2
States reached
$111k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2024.

Arts & Culture$268kPhilanthropy$141kEnvironment$139kHealth$101kFood & Nutrition$80kHuman Services$68kEducation$57kInternational$55kOther$0
02FY2025 · 17 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k9 grants · $21k
  • $10k–50k6 grants · $95k
  • $50k–250k2 grants · $161k
$5,000
Median grant
2
States reached
$6.3M
Total assets
Largest grants
RecipientAmount
Individual grant recipient$111,000
DENVER PARK TRUST$50,000
KCRW FOUNDATION INC$25,000
YAMPA VALLEY COMMUNITY FOUNDATION$20,000
DENVER FOUNDATION$20,000
OLD TOWN HOT SPRINGS$10,000
WEECYCLE$10,000
DENVER CENTER FOR THE PERFORMING ARTS$10,000
CHILDREN'S MUSEUM OF DENVER AT MARSICO CAMPUS$5,000
DENVER ART MUSEUM$5,000
MCA DENVER$2,500
CHERRY HILLS VILLAGE POLICE FDN$2,500
CHILDREN'S HOSPITAL COLORADO FOUNDATION$2,500
DENVER ZOO CONSERVATION ALLIANCE$1,000
DENVER MUSEUM OF NATURE & SCIENCE$1,000
02The need
03

Does the money reach high-need areas?

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

show:

Its human-services grants (FY22–25, $25k) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 10%GOODFOUNDATION: $10k → 14%GOODFOUNDATION: $5k → 14%WEECYCLE: $10k → 12%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

WA
NY
MA
SD
PA
NJ
CA
CO
VA
DC
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 7% of Strompolos Family Foundation’s grant dollars are earmarked for a different county than the recipient’s own address. By recipient address, 42% of the giving stays in CA; by stated purpose, 39%.

Strompolos Family Foundationlessmore of its giving
Placed by recipient address · 6.7% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

92%of every dollar goes to organizations it has funded before.
$1.1M · 46 repeat orgs$93k to everyone else

Grantees it renews have grown median revenue +26% since the first grant, against -2% for those funded once.

46 repeat relationships: 11 still active in FY2025, 35 since wound down; 3 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

46
19

Total granted

$1.1M
$81k

Median revenue growth · since first grant

+26%
-2%

Still filing today

78%
37%

New vs renewed · share of each year

In FY2025, 94% of grant dollars renewed an existing relationship; $12k went to new ones.

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

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

’19’20’21’22’23’24’25
Arts & CultureEnvironmentHealthEducationPhilanthropyRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • KF
    KCRW FOUNDATION INC
    6× · 2020–2025 · $150k · revenue +17%
  • B
    BABY2BABY
    5× · 2020–2024 · $40k · revenue +15%
  • DENVER CENTER FOR THE PERFORMING ARTS
    3× · 2023–2025 · $34k · revenue +34%

Funded once

  • AC
    ANGEL CITY FUND
    one grant, 2022 · $10k
  • KT
    KISS THE GROUND
    one grant, 2020 · $10k · revenue -9%
  • LF
    LAFC FOUNDATION
    one grant, 2022 · $10k
How this is measured

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

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
National Forest Foundation

The national forest foundation (nff), chartered by congress, turns america's love of nature into meaningful action for 193-million acre national forest system through on the ground program work and grant making activities, and accepts and…

Recreation & Sports
2
The Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
3
The San Diego Foundation

The san diego foundation inspires enduring philanthropy and enables community solutions to improve the quality of life in our region.

Philanthropy
4
Cdp North America Inc

Cdp north america, inc. 's ("cdp-na") vision for the future is a thriving economy that works for people and planet in the long term. we focus investors and companies on taking urgent action to build a truly sustainable economy by measuring…

Environment
5
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
6
California Dental Association Foundation

The foundation's mission is to improve the oral health of all californians by supporting the dental profession and its efforts to meet community needs.

Science & Tech
7
Arizona Community Foundation

To lead, serve and collaborate to mobilize enduring philanthropy for a better arizona.

Philanthropy
8
Friends of the Earth

Friends of the earth strives for a more healthy and just world by defendng the environment and human health while advancing social and economic justice by conducting research and education, transforming the economy so it protects the…

Environment
9
The Uc Davis Foundation

The mission of the uc davis foundation is to secure, steward and manage private gifts for uc davis.

Education
10
Colorado Open Lands

Colorado open lands' mission is to preserve the significant open lands and natural heritage of colorado through private and public partnerships, innovative land conservation, and strategic leadership.

Environment
11
Community Foundation Santa Cruz County

To promote philanthropy to make santa cruz county a better place to live, now and in the future.we bring together people, ideas, and resources to inspire philanthropy and accomplish great things.

Philanthropy
12
Ucla Foundation

The ucla foundation is the giving, receiving, and investing arm of the ucla campus. the foundation enables private donors to help build, sustain and advance one of the world's finest academic and research institutions. private philanthropy…

Education
How this is measured
The grantee most central to the portfolio’s shape is Colorado Gives Foundation; the most unlike its peers is The Chill Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

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

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 50 of the 74 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
6
Early backer (in before they grew)
50/50
Grantees still filing
37/50
Grew since first funded

Where the money sits, by cause and then by grantee

KCRW FOUNDATION INC: $150,000 · OtherKCRW FOUNDATION INCIndividual grant recipient: $142,500 · OtherIndividual grant recipientYVCF GRANT PROGRAM: $50,000 · OtherYVCF GRANT PROGRAMOLD TOWN HOT SPRINGS: $47,900 · OtherOLD TOWN HOT SPRINGSBABY2BABY: $40,000 · OtherBABY2BABYSHARE OUR STRENGTH: $25,000 · OtherLOS ANGELES REGIONAL FOOD BANK: $24,948 · Other+35 more: $262,293 · Other+35 moreTHE DENVER FOUNDATION: $80,000 · PhilanthropyTHE DENVER FOUNDA…YAMPA VALLEY COMMUNITY FOUNDATION: $72,500 · PhilanthropyYAMPA VALLEY COMM…THE CLEAR FUND: $30,000 · PhilanthropyTHE CLEAR FUNDTHE CHILL FOUNDATION: $20,000 · PhilanthropyTHE CHILL FOUNDAT…COURT SPORTS FOR LIFE FOUNDATION: $7,500 · Philanthropy+2 more: $8,120 · PhilanthropyDENVER CENTER FOR THE PERFORMING ARTS: $33,629 · Arts & CultureDENVER CEN…THE CHILDRENS MUSEUM OF DENVER INC: $27,500 · Arts & CultureTHE CHILDR…Colorado Museum of Natural History: $26,000 · Arts & CultureColorado M…DENVER ART MUSEUM: $25,000 · Arts & CultureDENVER ART…SHAREWELL: $10,000 · Arts & CultureSHAREWELLMUSEUM OF CONTEMPORARY ART DENVER: $7,500 · Arts & CultureMUSEUM OF …+2 more: $4,629 · Arts & CultureChildren's Hospital Colorado Foundation: $32,500 · HealthHEARING HEALTH FOUNDATION: $25,000 · HealthYAMPA VALLEY MEDICAL CENTER FOUNDATION: $25,000 · HealthChildren's Hospital Los Angeles: $15,000 · HealthDenver Park Trust: $55,000 · Recreation & SportsLOS ANGELES PARKS FOUNDATION: $15,000 · Recreation & SportsDENVER MOUNTAIN PARKS FOUNDATION: $2,500 · Recreation & SportsKABOOM INC: $2,500 · Recreation & SportsTHE SURFRIDER FOUNDATION: $20,000 · EnvironmentHEAL THE BAY: $15,000 · EnvironmentPROTECT OUR WINTERS: $13,500 · EnvironmentCLEAN AIR TASK FORCE INC: $10,000 · EnvironmentDENVER BOTANIC GARDENS INC: $7,500 · EnvironmentUNIVERSITY OF CALIFORNIA BERKELEY FOUNDATION: $30,000 · EducationTHE NEST SCHOOL: $22,000 · EducationWIKIMEDIA FOUNDATION INC: $5,000 · EducationPROJECT DRAWDOWN: $5,000 · Education
Other$742,641Philanthropy$218,120Arts & Culture$134,258Health$97,500Recreation & Sports$75,000Environment$66,000Education$62,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetKCRW FOUNDATION INC: $150,000 over 6y, 0.1% of budgetTHE DENVER FOUNDATION: $80,000 over 3y, 0.0% of budgetYAMPA VALLEY COMMUNITY FOUNDATION: $72,500 over 4y, 0.1% of budgetDenver Park Trust: $55,000 over 3y, 0.6% of budgetBABY2BABY: $40,000 over 5y, 0.0% of budgetDENVER CENTER FOR THE PERFORMING ARTS: $33,629 over 3y, 0.0% of budgetChildren's Hospital Colorado Foundation: $32,500 over 5y, 0.0% of budgetTHE CLEAR FUND: $30,000 over 4y, 0.0% of budgetUNIVERSITY OF CALIFORNIA BERKELEY FOUNDATION: $30,000 over 3y, 0.0% of budgetTHE CHILDRENS MUSEUM OF DENVER INC: $27,500 over 4y, 0.1% of budgetColorado Museum of Natural History: $26,000 over 4y, 0.0% of budgetHEARING HEALTH FOUNDATION: $25,000 over 5y, 0.2% of budgetYAMPA VALLEY MEDICAL CENTER FOUNDATION: $25,000 over 2y, 1.0% of budgetDENVER ART MUSEUM: $25,000 over 3y, 0.0% of budgetSHARE OUR STRENGTH: $25,000 over 5y, 0.0% of budgetLOS ANGELES REGIONAL FOOD BANK: $24,948 over 3y, 0.0% of budgetTHE NEST SCHOOL: $22,000 over 3y, 1.6% of budgetTHE CHILL FOUNDATION: $20,000 over 5y, 14% of budgetWORLD CENTRAL KITCHEN INC: $20,000 over 3y, 0.0% of budgetTHE SURFRIDER FOUNDATION: $20,000 over 4y, 0.0% of budgetFOOD BANK OF THE ROCKIES: $20,000 over 2y, 0.0% of budgetKIVA MICROFUNDS: $15,000 over 3y, 0.0% of budgetLOS ANGELES PARKS FOUNDATION: $15,000 over 3y, 0.2% of budgetChildren's Hospital Los Angeles: $15,000 over 3y, 0.0% of budgetHEAL THE BAY: $15,000 over 3y, 0.2% of budgetGOOD PLUS FOUNDATION INC: $15,000 over 2y, 0.1% of budgetPROTECT OUR WINTERS: $13,500 over 4y, 0.1% of budgetCHERRY HILLS VILLAGE POLICE FOUNDATION: $12,500 over 3y, 9.1% of budgetLOS ANGELES FIRE DEPARTMENT FOUNDATION: $12,500 over 3y, 0.1% of budgetKISS THE GROUND: $10,000 over 1y, 0.5% of budgetRodale Institute: $10,000 over 2y, 0.0% of budgetSHAREWELL: $10,000 over 2y, 0.2% of budgetCLEAN AIR TASK FORCE INC: $10,000 over 2y, 0.0% of budgetDENVER ZOOLOGICAL FOUNDATION: $7,500 over 2y, 0.0% of budgetCOURT SPORTS FOR LIFE FOUNDATION: $7,500 over 2y, 0.1% of budgetMUSEUM OF CONTEMPORARY ART DENVER: $7,500 over 3y, 0.1% of budgetDENVER BOTANIC GARDENS INC: $7,500 over 2y, 0.0% of budgetBEACON CENTER: $6,000 over 5y, 0.2% of budgetHIGH LINE CANAL CONSERVANCY: $6,000 over 3y, 0.0% of budgetPLEDGELING FOUNDATION: $5,000 over 1y, 0.1% of budgetWIKIMEDIA FOUNDATION INC: $5,000 over 1y, 0.0% of budgetPROJECT DRAWDOWN: $5,000 over 2y, 0.1% of budgetCOLORADO GIVES FOUNDATION: $3,120 over 1y, 0.0% of budgetSTRINGS MUSIC FESTIVAL: $2,629 over 2y, 0.1% of budgetCLIMATE CENTRAL INC: $2,500 over 1y, 0.0% of budgetCOACHARTORG: $2,500 over 1y, 0.1% of budgetDENVER MOUNTAIN PARKS FOUNDATION: $2,500 over 1y, 4.4% of budgetKABOOM INC: $2,500 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

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

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Colorado Gives Founda…The Denver FoundationGs Donor Advised Phil…Gates Family Foundati…Rose Community Founda…The Annenberg Foundat…The Ayco Charitable F…Xcel Energy FoundationIbm International Fou…National Philanthropi…California Community …The Chicago Community…
Colorado Gives FoundationCO19.8× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Colorado Gives Foundation · The Denver Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Gates Family Foundation · Rose Community Foundation · The Annenberg Foundation · The Ayco Charitable Foundation · Xcel Energy Foundation · Ibm International Foundation · National Philanthropic Trust · California Community Foundation · The Chicago Community Trust

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Strompolos Family Foundation funds: left to right is the share of its income from government, bottom to top the share from Strompolos Family Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%1%4%8%15%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →
    no gov moneyreceives it· size = income
    2get no government money at all
    17report 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, FY20–25
    How this is measured
    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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.

    On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 74 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

    How this is measured
    Each figure carries one of six labels. Filed is what the funder reported on its 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.

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

    Source object · view filing

    Play a game based on Strompolos Family’s filings →

    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home