New York · Nonprofit
MAYVILLE LIBRARY
MAYVILLE LIBRARY (New York) receives grants from 2 organizations whose IRS filings report $54,867 to it, the largest being CHAUTAUQUA-CATTARAUGUS LIBRARY SYSTEM ($54,741). 2 of them have funded it in more than one year.
- Revenue FY2025
- $132k
- Funders on record
- 2
- Grants received
- $55k
- Net assets
- $759k
What Mayville Library does
Mission
Mayville Library is an association library dedicated to providing people with free access to comprehensive information through reading and reference materials, various types of visual and audio media, and computer technology.
As stated on its FY2025 Form 990.
Programs
Providing books, audio and visual materials and periodicals for patrons of the library. This library serves the town of chautauqua and all visitors to our community. The area has an extensive summer population. All patrons of our library are given any information free of any charge.
$116,284 spent88% of program spendingProviding computer access for information through the internet. We provide four computers for our patrons. Also, we provide wifi access 24/7 near our building.
$4,593 spent3% of program spendingWe have continuing reading programs for children and young adults. The programs are administered by educational professionals.
$10,952 spent8% of program spending
The 3 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $131,829.
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 2018 to 2019, from $678k to $727k (+7%).
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 66% · 2018 76% · 2019 71% · 2020 79% · 2021 79% · 2022 72% · 2023 77% · 2024 74% · 2025 72%. Grants only. Government contracts and fees sit inside program revenue.
100% of MAYVILLE LIBRARY’s revenue is contributions — more reliant on donations than three-quarters of its peers (57% 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 1 funder to 2 funders, grant income fell $12k → $6k.
1 of 2 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 0% 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 MAYVILLE LIBRARY’s funders (the co-funder graph). 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
MAYVILLE LIBRARY leans on a few funders — its largest provides 100% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
100% 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 MAYVILLE LIBRARY.
Largest funder’s share by year: 2017 100% · 2018 100% · 2020 100% · 2021 99% · 2022 99% · 2023 99% — broadly stable.
“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.
Where its funders are
100% of MAYVILLE LIBRARY's grant income comes from New York funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $126 arriving through sponsors registered in 1 state 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
MAYVILLE LIBRARY holds deeper cash reserves than three-quarters of the 16,849 education nonprofits its size.
this organization peer median middle 50% of peers· 16,849 education nonprofits $100k–$1M, FY2025
Organizations like MAYVILLE 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 New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
100% of spending goes to programs.
Governance
Public support
100%
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 MAYVILLE 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 MAYVILLE LIBRARY?
- MAYVILLE LIBRARY (New York) receives grants from 2 organizations whose IRS filings report $54,867 to it, the largest being CHAUTAUQUA-CATTARAUGUS LIBRARY SYSTEM ($54,741). 2 of them have funded it in more than one year.
- How many funders does MAYVILLE LIBRARY have?
- IRS filings report 2 organizations giving $54,867 in grants to MAYVILLE LIBRARY, 2 of which have funded it in more than one year.
- Who is the largest funder of MAYVILLE LIBRARY?
- CHAUTAUQUA-CATTARAUGUS LIBRARY SYSTEM is the largest funder on record, with $54,741 in grants. The full list of funders is on this page.
- How can an organization like MAYVILLE LIBRARY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. 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 Mayville 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 2 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 14, 2026. What this page cannot tell you · view filing