California · Nonprofit
RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER
RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER (California) receives grants from 32 organizations whose IRS filings report $851,646 to it, the largest being Inland Empire Community Foundation ($244,413). 16 of them have funded it in more than one year.
- Revenue FY2024
- $4.3M
- Funders on record
- 32
- Grants received
- $852k
- Net assets
- $3.6M
What Riverside Humane Society Pet Adoption Center does
Mission
To eliminate the suffering of homeless cats and dogs by providing humane care for pets in transition, facilitating adoptions to good homes, supporting pet overpopulation education, and supporting sterilization of companion animals.
As stated on its FY2024 Form 990.
Programs
Spay & neuter clinic: the pet adoption center used a successful model from a nationally known organization called humane alliance (www.humanealliance.org) to transform their former facility into a surgical center. The goal is to alter between 35-45 dogs, cats, puppies or kittens per day. The crisis of pet overpopulation in the community is staggering, preventing unplanned and unwanted litters is a large part of the solution. The organization makes a difference by providing low-cost, high quality resources for the community.
$949,689 spent$1,340,190 earned by the program29% of program spendingAnimal care and adoption: as a limited-entry companion adoption center, the pet adoption center takes in healthy, adoptable cats and dogs from owners who can no longer care for them. As space allows, they also select healthy, adoptable cats and dogs from other local animal welfare agencies. Pets that are accepted into the center must pass health and behavior evaluations. All animals stay at the center until a good, loving home is found. No healthy, adoptable animal is ever destroyed, if space is not available to admit a pet, or if the pet cannot be accepted due to any other reason, owners are referred to other facilities and organizations. All pets, while at the center, receive food, a comfortable environment, medical attention and loving socialization from both staff and volunteers. Staff and volunteers monitor the physical, emotional, and mental health of the animals daily. A progressive "stress reduction" program helps keep the pets healthy, happy and adoptable. All animals are vaccinated, micro-chipped and spayed or neutered. For animals that are too young to be adopted, volunteers offer temporary homes through our pet foster care program.
$1,715,142 spent$331,512 earned by the program52% of program spendingOther programs: includes pet food assistance, dog training, nail trimming clinics, and others.
$637,694 spent$727,081 earned by the program19% of program spending
The 3 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $3,302,525.
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 2019 to 2020, from $3.9M to $4.8M (+22%).
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: 2021 7% · 2022 1%. Grants only. Government contracts and fees sit inside program revenue.
40% of RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER’s revenue is contributions — more earned-revenue than three-quarters of its peers (74% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 6 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
Carrie Ridgway
Executive director
Board chair
Duane R Roberts
Chairman
As listed on its FY2024 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 4 funders to 7 funders, grant income fell $56k → $48k.
8 of 32 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 48% 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 RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER’s funders (the co-funder graph). Top 30 of 32 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
RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER leans on a few funders — its largest provides 29% of grant income and the top three 60%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
62% 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 RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER.
Largest funder’s share by year: 2017 54% · 2018 50% · 2019 56% · 2020 39% · 2021 81% · 2022 60% · 2023 25% — 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
25% of RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER's funders are still giving 3 years after their first grant; 50% 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
57% of RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER's grant income comes from California funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $409k arriving through sponsors registered in 7 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
RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER has grown faster than half of the 1,559 animals nonprofits its size.
this organization peer median middle 50% of peers· 1,559 animals nonprofits $1M–$10M, FY2024
Organizations like RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER
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 California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
80% of spending goes to programs.
Governance
Public support
98%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER: 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 RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER?
- RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER (California) receives grants from 32 organizations whose IRS filings report $851,646 to it, the largest being Inland Empire Community Foundation ($244,413). 16 of them have funded it in more than one year.
- How many funders does RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER have?
- IRS filings report 32 organizations giving $851,646 in grants to RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER, 16 of which have funded it in more than one year.
- Who is the largest funder of RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER?
- Inland Empire Community Foundation is the largest funder on record, with $244,413 in grants. The full list of funders is on this page.
- How can an organization like RIVERSIDE HUMANE SOCIETY PET ADOPTION CENTER find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Riverside Humane Society Pet Adoption Center →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 32 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