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Historical Society of Southern California

EIN 95-6006121 · Simi Valley, CA

Public records show a registered, tax-exempt organization in good standing.

LegitimacyPassesRegistration and standingFinancial healthGood85 out of 100GovernanceStrong100 out of 100Impact evidenceDescribes programsHow well its results are evidenced

What it says it does

THE HISTORICAL SOCIETY OF SOUTHERN CALIFORNIA (HSSC) SEEKS TO CONNECT PEOPLE TO THEIR PAST AND TO THE PLACES THEY LIVE BY COMBINING INCLUSIVE HISTORICAL SCHOLARSHIP AND COMMUNITY ENGAGEMENT TO EXPLORE AND DISSEMINATE THE COMPLEX MULTICULTURAL (CONT. SCH. O) (CONTINUED)HISTORY OF SOUTHERN CALIFORNIA AND THE WEST. FOUNDED IN 1883, THE HSSC IS A MEMBERSHIP-DRIVEN, NONPROFIT ORGANIZATION.

Income
$167,089
Spending
$76,229
Spent on programs
49%
Reserves
Over 10 years of spending
Largest source of income
donations and private grants, 67%
Employees
1
Volunteers
9
Highest pay
$23,400, executive director

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Financial health

Good: 85 out of 100. Higher than 66% of charities in its peer group (arts and culture, under $250k).

  • Reserves

    35 of 35

    Spendable reserves would cover more than ten years of spending.

  • Debt

    20 of 20

    It owes 0% of what it owns.

  • Living within its means

    15 of 15

    Income exceeded spending by 54% of income.

  • Income trend

    15 of 15

    Income rose 99% on the year before.

  • Spending floor

    0 of 15

    49% of spending went to programs and raising each dollar of donations cost 6 cents.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Governance

Strong: 100 out of 100. Higher than 92% of charities in its peer group (arts and culture, under $250k).

  • Independent board

    25 of 25

    7 of 7 voting board members are independent.

  • Conflict of interest policy

    15 of 15

    Has a written conflict of interest policy.

  • Whistleblower policy

    8 of 8

    Has a written whistleblower policy.

  • Record keeping policy

    7 of 7

    Has a written policy on keeping and destroying records.

  • Board minutes

    5 of 5

    Keeps minutes of board meetings.

  • Board sees the tax return

    10 of 10

    Gave the board a copy of this return before filing it.

  • Pay set independently

    5 of 5

    Sets its chief executive's pay through independent review and comparison.

  • No reported misuse

    10 of 10

    Reports no diversion of assets, excess benefits or loans to insiders.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Impact evidence

Describes programs. Its tax return describes what it does but we have found no measurable results in it.

Programs described in its return (2)
  1. $20,130 spent. PUBLICATION OF THE SOUTHERN CALIFORNIA QUARTERLY, A SCHOLARLY JOURNAL THAT IS SUBSCRIBED TO BY TWO GROUPS OF PEOPLE: 120 MEMBERS OF THE EXEMPT ORGANIZATION AND OTHER INSTITUTIONS THAT SUBSCRIBE DIRECTLY THROUGH THE ORGANIZATION OR BY PUBLISHING COMPANIES EBSCO, JOHNS HOPKINS PUBLISHING (PROJECT MUSE) AND JSTOR.
  2. $17,559 spent. IN 2024, THE ORGANIZATION OFFERED 3 ONLINE EVENTS FREE OF COST ABOUT THE HISTORY OF SOUTHERN CALIFORNIA AND THE GREATER WEST. A TOTAL OF 150 VIEWED THESE EVENTS ONLINE.

Source: Form 990 for the year ending December 31, 2024, filed with the Internal Revenue Service. Rating method 2026.2. How we rate

Legitimacy checks

  1. Is it registered with the IRS? Passed.

    Listed in the IRS master file of tax-exempt organizations as a 501(c)(3) charitable organization.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  2. Has the IRS revoked its tax-exempt status? Passed.

    Not on the IRS automatic revocation list.

    Source: Automatic revocation of exemption list, Internal Revenue Service, file dated September 30, 2026.

  3. Are donations tax-deductible? Passed.

    On the IRS list of organizations eligible to receive tax-deductible contributions.

    Source: Publication 78 data: organizations eligible for tax-deductible contributions, Internal Revenue Service, file dated September 10, 2026.

  4. Is it keeping up with its IRS filings? Passed.

    Most recent return on file covers the year ending December 2024.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  5. How long has it been tax-exempt? Passed.

    Recognized by the IRS since September 1948.

    Source: Exempt Organizations Business Master File, Internal Revenue Service, file dated September 7, 2026.

  6. Is it in good standing with state regulators? Passed.

    Not on California's list of charities barred from soliciting. Other states are not yet checked.

    Source: May Not Operate or Solicit for Charitable Purposes list, California Attorney General, Registry of Charities and Fundraisers, file dated October 7, 2026.

Ratings and checks are our reading of public records, using the published method. They are not a statement about anyone's honesty. If you work for this organization, you can send corrections or results, confirm you want gifts through Veridonate, or ask to be removed from giving.