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California · Public charity

Legal Aid Society of San Mateo County

We use the law to make the social safety net work for everyone in San Mateo County. We represent clients, empower people to advocate for themselves, and fix broken systems through policy change.

$1.3M
Granted FY2025(still arriving)
10
Itemized grants FY2025
10
Organizations funded FY2023
10%
First-time grantees FY2023
Read the full brief
Itemized, FY2025
$1.2M
The rest is grants the schedule does not break out
Median grant, FY2025
$124,539
Largest grant, FY2025
$260,710
Organizations funded a year
10 to 14
FY2019 to FY2023
States reached, FY2025
1
Total assets, FY2025
$7.3M

How open it is to new grantees

In FY2023, 10% of the organizations Legal Aid Society of San Mateo County funded were first-time grantees, receiving 4% of its grant dollars.

New vs renewed · share of each year

In FY2023, 96% of grant dollars renewed an existing relationship; $40k went to new ones.

50%100%’20’21’22’23
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’20’21’22’23
Human ServicesCommunity ImprovementArts & CultureHousing & ShelterOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving10$1.2M10%
FY202310$1.1M10%
FY202212$1.2M17%
FY202111$2.0M18%
FY202014$1.0M21%
FY201913$845kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2025.

Crime & Legal$4.6MCommunity Improvement$1.4MHuman Services$828kEducation$196kArts & Culture$152kEmployment$67kPublic Benefit$58kScience & Tech$13kOther$0

Top grantees

Largest recipients by total granted, FY2019 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 20 grantees

Plus 2 recipients with no EIN on record ($80k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Legal Aid Society of San Mateo County supplied at peak.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetImmigration Institute of the Bay Area: $1,292,249 over 6y, 3.8% of budgetCommunity Legal Services in East Palo Alto Inc: $970,126 over 6y, 3.9% of budgetMission Asset Fund: $950,000 over 1y, 1.6% of budgetCatholic Charities Cyo of the Archdiocese of San Francisco: $884,821 over 4y, 0.4% of budgetUniversity of San Francisco: $621,687 over 6y, 0.0% of budgetPangea Legal Services: $613,493 over 6y, 8.0% of budgetFaith In Action Bay Area: $444,255 over 6y, 4.6% of budgetImmigrant Legal Resource Center: $386,558 over 6y, 0.4% of budgetCatholic Charities San Bernardino & Riverside Counties: $369,272 over 2y, 3.4% of budgetNuestra Casa de East Palo Alto: $192,759 over 5y, 3.7% of budgetCoastside Hope: $174,280 over 6y, 2.5% of budgetNihonmachi Legal Outreach Dba Asian Pacific Islander Legal Outreach: $73,750 over 1y, 1.7% of budgetJobtrain Inc: $66,750 over 4y, 0.3% of budgetPuente de la Costa Sur: $40,000 over 1y, 0.6% of budgetSamaritan House: $40,000 over 1y, 0.1% of budgetBay Area Legal Aid: $39,000 over 2y, 0.1% of budgetEl Concilio of San Mateo County: $11,728 over 1y, 0.7% of budgetSan Francisco Tenants Union: $5,000 over 1y, 2.4% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 18.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

The San Francisco FoundationCA29.6× affinity13 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The San Francisco Foundation · Sunlight Giving · The Grove Foundation · Silicon Valley Community Foundation · Sand Hill Foundation · Atkinson Foundation · The Sobrato Family Foundation · Kaiser Foundation Hospitals · Amalgamated Charitable Foundation Inc · Give Forward Foundation · Immigrant Legal Resource Center · Philanthropic Ventures Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Legal Aid Society of San Mateo County with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to Legal Aid Society of San Mateo County?

Find your warmest path to Legal Aid Society of San Mateo County through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

About Legal Aid Society of San Mateo County

How much does Legal Aid Society of San Mateo County give?
Legal Aid Society of San Mateo County reported 10 itemized grants totaling $1,157,333, out of $1,279,237 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 10 and 14 organizations a year over FY2019 to FY2023.
What does Legal Aid Society of San Mateo County fund?
By grant dollars over FY2019 to FY2025, its largest causes are Crime & Legal (63%), Community Improvement (19%), Human Services (11%).
Who are Legal Aid Society of San Mateo County's largest grantees?
By total granted over FY2019 to FY2025: Immigration Institute of the Bay Area ($1.3M), Community Legal Services in East Palo Alto Inc ($970k), Mission Asset Fund ($950k).
Does Legal Aid Society of San Mateo County fund new organizations?
In FY2023, 10% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Legal Aid Society of San Mateo County?
Its strongest co-funders, measured against what their size predicts, include The San Francisco Foundation, Sunlight Giving, The Grove Foundation.
Where is Legal Aid Society of San Mateo County based?
Legal Aid Society of San Mateo County is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 23 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Legal Aid Society of San Mateo County’s filings →

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