Florida · Nonprofit
ST PETERSBURG HISTORICAL SOCIETY
ST PETERSBURG HISTORICAL SOCIETY (Florida) receives grants from 17 organizations whose IRS filings report $1,586,343 to it, the largest being HOUGH FAMILY FOUNDATION INC ($1,205,000). 10 of them have funded it in more than one year.
- Revenue FY2025
- $687k
- Funders on record
- 17
- Grants received
- $1.6M
- Net assets
- $4.5M
What St Petersburg Historical Society does
Mission
The historical society operates the st. Petersburg museum of history and shares florida's stories as the hub of scholarship and learning to inspire, entertain, and promote civic engagement.
As stated on its FY2025 Form 990.
Program
Preservation and display of artifacts and exhibits for public education and enjoyment.
$771,224 spentof which $158,554 as grants$98,893 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $771,224.
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 2020 to 2021, from $3.5M to $5.6M (+60%).
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 5% · 2019 69% · 2020 2% · 2021 52% · 2022 45% · 2023 1% · 2024 3% · 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. 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 9 funders, grant income rose $40k → $116k.
5 of 17 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% 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 ST PETERSBURG HISTORICAL SOCIETY’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
ST PETERSBURG HISTORICAL SOCIETY leans on a few funders — its largest provides 76% of grant income and the top three 85%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 100% · 2018 80% · 2019 94% · 2020 75% · 2021 98% · 2022 75% · 2023 27% — 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.
How long its funders stay
44% of ST PETERSBURG HISTORICAL SOCIETY's funders are still giving 3 years after their first grant; 59% 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
96% of ST PETERSBURG HISTORICAL SOCIETY's grant income comes from Florida funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $79k arriving through sponsors registered in 4 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 ST PETERSBURG HISTORICAL SOCIETY
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 Florida
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Public support
79%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Part of a family of 1 related entity
- Sin Barcos LLC · disregarded
Screen this organization
A dated, signed PDF of the compliance screen for ST PETERSBURG HISTORICAL SOCIETY: 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 ST PETERSBURG HISTORICAL SOCIETY?
- ST PETERSBURG HISTORICAL SOCIETY (Florida) receives grants from 17 organizations whose IRS filings report $1,586,343 to it, the largest being HOUGH FAMILY FOUNDATION INC ($1,205,000). 10 of them have funded it in more than one year.
- How many funders does ST PETERSBURG HISTORICAL SOCIETY have?
- IRS filings report 17 organizations giving $1,586,343 in grants to ST PETERSBURG HISTORICAL SOCIETY, 10 of which have funded it in more than one year.
- Who is the largest funder of ST PETERSBURG HISTORICAL SOCIETY?
- HOUGH FAMILY FOUNDATION INC is the largest funder on record, with $1,205,000 in grants. The full list of funders is on this page.
- How can an organization like ST PETERSBURG HISTORICAL SOCIETY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Florida. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
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 17 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