Connecticut · Nonprofit
THE GREENWICH LIBRARY
THE GREENWICH LIBRARY (Connecticut) receives grants from 119 organizations whose IRS filings report $13,537,698 to it, the largest being CLEMENTINE LOCKWOOD PETERSON FOUNDATION ($6,073,608). 69 of them have funded it in more than one year.
- Revenue FY2025
- $3.6M
- Funders on record
- 119
- Grants received
- $14M
- Net assets
- $87M
What The Greenwich Library does
Mission
To provide exceptional resources, programs, and services that promote the joy of lifelong learning and discovery, and to offer a welcoming place for people to gather and share experiences.
As stated on its FY2025 Form 990.
Programs
Private funding:private funding supports staff training, programming, some materials, supplies, as well as capital projects outside the scope of publicly funded capital maintenance projects.
$2,181,401 spent$34,017 earned by the program47% of program spendingPeterson funded operations:the clementine lockwood peterson foundation is a separate entity operated by independent trustees, funds the maintenance and operations of the peterson wing of the main library through an agreement between the library and the town of greenwich. This wing offers services and materials focused on business, music, and the arts.
$1,838,322 spent40% of program spendingFriends organizations: there are three friends organizations - the "friends of greenwich library," the "friends of byram shubert library, and the "friends of cos cob library." these organizations provide funding and activities for their respective locations including the oral history project, the flinn gallery, book clubs, and community events.
$579,718 spent13% of program spending
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $4,599,441.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2020 to 2021, from $78M to $87M (+11%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 2% · 2018 1% · 2019 4% · 2020 8% · 2021 24% · 2022 46% · 2023 16% · 2024 2% · 2025 8%. Grants only. Government contracts and fees sit inside program revenue.
76% of THE GREENWICH LIBRARY’s revenue is contributions — more donation-reliant than the typical peer (48% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Who funds it, year by year
2017 → 2023: the base broadened from 26 funders to 41 funders, grant income rose $112k → $1.8M.
14 of 119 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 18% 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 THE GREENWICH LIBRARY’s funders (the co-funder graph). Top 30 of 119 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
THE GREENWICH LIBRARY leans on a few funders — its largest provides 45% of grant income and the top three 68%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
64% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund THE GREENWICH LIBRARY.
Largest funder’s share by year: 2017 40% · 2018 22% · 2019 63% · 2020 31% · 2021 53% · 2022 66% · 2023 69% — growing more concentrated.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
36% of THE GREENWICH LIBRARY's funders are still giving 3 years after their first grant; 58% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
68% of THE GREENWICH LIBRARY's grant income comes from Connecticut funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $2.5M arriving through sponsors registered in 8 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
THE GREENWICH LIBRARY is better cushioned than half of the 9,615 education nonprofits its size.
this organization peer median middle 50% of peers· 9,615 education nonprofits $1M–$10M, FY2025
Organizations like THE GREENWICH LIBRARY
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Connecticut
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
88% of spending goes to programs.
Governance
Public support
51%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for THE GREENWICH LIBRARY: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE GREENWICH LIBRARY?
- THE GREENWICH LIBRARY (Connecticut) receives grants from 119 organizations whose IRS filings report $13,537,698 to it, the largest being CLEMENTINE LOCKWOOD PETERSON FOUNDATION ($6,073,608). 69 of them have funded it in more than one year.
- How many funders does THE GREENWICH LIBRARY have?
- IRS filings report 119 organizations giving $13,537,698 in grants to THE GREENWICH LIBRARY, 69 of which have funded it in more than one year.
- Who is the largest funder of THE GREENWICH LIBRARY?
- CLEMENTINE LOCKWOOD PETERSON FOUNDATION is the largest funder on record, with $6,073,608 in grants. The full list of funders is on this page.
- How can an organization like THE GREENWICH LIBRARY 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.
Play a game about who funds Greenwich Library →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 119 funders 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. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing