Arizona · Nonprofit
MESA HISTORICAL SOCIETY INC
MESA HISTORICAL SOCIETY INC (Arizona) receives grants from 6 organizations whose IRS filings report $168,032 to it, the largest being ARIZONA MUSEUM OF NATURAL HISTORY FOUNDATION ($113,971). 2 of them have funded it in more than one year.
- Revenue FY2025
- $481k
- Funders on record
- 6
- Grants received
- $168k
- Net assets
- $637k
What Mesa Historical Society Inc does
Mission
Mesa historical society is a public museum dedicated to preserving mesas rich culture and history through collections and exhibits
As stated on its FY2025 Form 990.
Program
Mesa historical society features exhibits dedicated to the city of mesa, including its prehistoric beginnings with the hohokam tribe to the birth of the early pioneer agriculture. The museum programs include year-round exhibits, hands-on demonstrations, group tours and special rotating exhibits throughout the year.
$180,385 spent$13,983 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $180,385.
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.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $468k to $637k (+36%).
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: 2019 61% · 2020 43% · 2021 55% · 2022 33% · 2023 39% · 2024 27% · 2025 26%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 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.
Chief executive
Susan Ricci
Executive director
As listed on its FY2025 Form 990.
Who funds it, year by year
2020 → 2023: the base broadened from 2 funders to 3 funders, grant income fell $114k → $12k.
2 of 6 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 6% 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 MESA HISTORICAL SOCIETY INC’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
MESA HISTORICAL SOCIETY INC leans on a few funders — its largest provides 68% of grant income and the top three 93%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
91% 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 MESA HISTORICAL SOCIETY INC.
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 100% · 2023 87% — diversifying over time.
“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 MESA HISTORICAL SOCIETY INC's grant income comes from Arizona funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $11k arriving through sponsors registered in 2 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.
Organizations like MESA HISTORICAL SOCIETY INC
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 Arizona
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
56% of spending goes to programs.
Governance
Public support
67%
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 MESA HISTORICAL SOCIETY INC: 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 MESA HISTORICAL SOCIETY INC?
- MESA HISTORICAL SOCIETY INC (Arizona) receives grants from 6 organizations whose IRS filings report $168,032 to it, the largest being ARIZONA MUSEUM OF NATURAL HISTORY FOUNDATION ($113,971). 2 of them have funded it in more than one year.
- How many funders does MESA HISTORICAL SOCIETY INC have?
- IRS filings report 6 organizations giving $168,032 in grants to MESA HISTORICAL SOCIETY INC, 2 of which have funded it in more than one year.
- Who is the largest funder of MESA HISTORICAL SOCIETY INC?
- ARIZONA MUSEUM OF NATURAL HISTORY FOUNDATION is the largest funder on record, with $113,971 in grants. The full list of funders is on this page.
- How can an organization like MESA HISTORICAL SOCIETY INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Arizona. 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 Mesa Historical Society →
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 6 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