How many funders does SOUTH WINDSOR HISTORICAL SOCIETY have?

IRS filings report 4 grantmakers giving $41,286 in grants to SOUTH WINDSOR HISTORICAL SOCIETY, 4 of which have funded it in more than one year.

Who is the largest funder of SOUTH WINDSOR HISTORICAL SOCIETY?

ACORN ALCINDA FOUNDATION INC is the largest funder on record, with $23,000 in grants. The full list of funders is on this page.

How can an organization like SOUTH WINDSOR HISTORICAL SOCIETY find more funders?

Start with the funders already giving here, then look at the foundations that back similar organizations in Connecticut. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

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Connecticut · Nonprofit

SOUTH WINDSOR HISTORICAL SOCIETY

SOUTH WINDSOR HISTORICAL SOCIETY (Connecticut) is funded by 4 grantmakers whose IRS filings report $41,286 in grants to it, the largest being ACORN ALCINDA FOUNDATION INC ($23,000). 4 of them have funded it in more than one year.

$30k

Revenue FY2020

Funders on record

$41k

Grants received

$101k

Net assets

4/4 repeat funderspeak grant-dependency 11%

01The organization over time

02Who funds it

Who funds it, year by year

$1k from 1 funders in 2025, up from $4k and 2 in 2018.

'18

'19

'20

'21

'22

'23

'24

'25

total

Acorn Alcinda Foundation Inc

$23k

Hartford Foundation for Public GivingDAF

$16k

Chatham-Beech Charitable Foundation

$2k

Amazonsmile FoundationDAF

$236

funders

2 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 40% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.

From the IRS filings of SOUTH WINDSOR HISTORICAL SOCIETY’s funders (the co-funder graph). Association, not causation.

How concentrated its funding is

SOUTH WINDSOR HISTORICAL SOCIETY leans on a few funders — its largest provides 56% of grant income and the top three 99%; half comes from just 1 funder.

the vertical line marks half of all grant income — 1 funder to its left

56%

largest funder

99%

top three

effective funders

Largest funder’s share by year: 2018 94% · 2019 58% · 2020 91% · 2021 66% · 2022 92% · 2023 71% · 2024 80% · 2025 100% — growing more concentrated.

“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration.

Where its funders are

SOUTH WINDSOR HISTORICAL SOCIETY draws 56% of its grant income from funders outside Connecticut — its reputation reaches beyond the state, across 3 states in all.

In-state vs out-of-state, by year

’18

’19

’20

’21

’22

’23

’24

’25

Connecticut out of state home

03Its place in the field

Funders to approach

Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 4 funders put you under-funded among the 400 organizations that share them.

From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.

Organizations like SOUTH WINDSOR HISTORICAL SOCIETY

Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.

In Connecticut

Plymouth Historical Society Inc80%Seymour Historical Society Inc79%Shelton Historical Society Inc77%Old Lyme Historical Society Inc77%The Windsor Historical Society Of76%Southbury Historical Society Inc76%South Windsor Community Foundation Inc75%East Haddam Historical Society Inc75%

Nationally

Windsor Museum and Historical85%Southold Historical Society83%Southwest Harbor Historical Society83%Sudbury Historical Society Inc81%Historical Society of West Windsor81%Hardwick Historical Society Inc81%Stoneham Historical Society Inc80%Hampton Falls Historical Society80%

04Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Public support

100%

Share of support from the public (Schedule A) — the basis for its public-charity status.

Questions and answers

Who funds SOUTH WINDSOR HISTORICAL SOCIETY?: SOUTH WINDSOR HISTORICAL SOCIETY (Connecticut) is funded by 4 grantmakers whose IRS filings report $41,286 in grants to it, the largest being ACORN ALCINDA FOUNDATION INC ($23,000). 4 of them have funded it in more than one year.
How many funders does SOUTH WINDSOR HISTORICAL SOCIETY have?: IRS filings report 4 grantmakers giving $41,286 in grants to SOUTH WINDSOR HISTORICAL SOCIETY, 4 of which have funded it in more than one year.
Who is the largest funder of SOUTH WINDSOR HISTORICAL SOCIETY?: ACORN ALCINDA FOUNDATION INC is the largest funder on record, with $23,000 in grants. The full list of funders is on this page.
How can an organization like SOUTH WINDSOR HISTORICAL SOCIETY find more funders?: Start with the funders already giving here, then look at the foundations that back similar organizations in Connecticut. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

Every figure is read directly from IRS Form 990 / 990-PF e-file XML — this organization’s own return for FY2020 (financials across 2020–2020), and the filings of 4funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. view filing

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