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Nonprofit · EIN 33-0574573

SAN DIEGO ARCHAEOLOGICAL CENTER

Tax-exempt · ESCONDIDO, CA 92027

Financials

$493K$405K2022$474K$431K2023$596K$498K2024
Revenue Expenses · by fiscal year end
Financials of SAN DIEGO ARCHAEOLOGICAL CENTER by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$595,830$497,703$98,127$900,846$33,399$867,447
June 30, 2024990$473,914$431,061$42,853$791,381$25,868$765,513
June 30, 2023990$493,341$404,807$88,534$743,173$20,513$722,660
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$261,035
of which government grants
$59,771
Program service revenue
$317,512
Investment income
$8,436
Net income from fundraising events
$6,710
Net income from sales of inventory
$2,137
Other revenue
$8,847

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Other salaries and wages
$290,195
Salaries, compensation and benefits (total)
$339,807
Professional fundraising fees
$0
Accounting fees
$10,620
Occupancy
$22,290
Travel
$369
Depreciation
$23,167
Program services (functional)
$395,382
Management and general (functional)
$57,803
Fundraising (functional)
$44,518

Balance sheet and other

Total assets, start of year
$791,381
Total assets, end of year
$900,846
Total liabilities, end of year
$33,399
Net assets, end of year
$867,447
Land, buildings and equipment
$154,174
Publicly traded securities
$363,662
Net assets without donor restrictions
$867,447
Gross receipts
$597,811
Employees
8
Volunteers
46
Year formed
1993
State of legal domicile
CA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
STEPHANIE SANDOVALTrustee / E.D.
Trustee or director
40$72,292
BRIAN WILLIAMSPresident
Trustee or director, Officer
4.5$0
BENNAE CALACVice President
Trustee or director, Officer
4.5$0
JAMES W ROYLE JRSecretary
Trustee or director, Officer
4.5$0
AHMET TURKENTreasurer
Trustee or director, Officer
4.5$0
TRAVIS ARMSTRONGTrustee
Trustee or director
3.5$0
CHERYL BOWDEN-RENNATreasurer
Trustee or director
3.5$0
G TIMOTHY GROSSTrustee
Trustee or director
3.5$0
ANA GUTIERREZ BRILLTrustee
Trustee or director
3.5$0
BAILEY JAGGERSTrustee
Trustee or director
3.5$0
CHERYL MADRIGALTrustee
Trustee or director
3.5$0
JON SPENARDTrustee
Trustee or director
3.5$0
990 for the year ended June 30, 2024: 12 people
NameTitleHours / weekCompensation
CHERYL BOWDEN-RENNATrustee
Trustee or director
3.5$0
BAILEY JAGGERSTrustee
Trustee or director
3.5$0
JAMES EIGHMEYTrustee
Trustee or director
3.5$0
G TIMOTHY GROSSPresident
Trustee or director, Officer
4.5$0
ANA GUTIERREZ BRILLTrustee
Trustee or director
3.5$0
TERESA SWEENEYTreasurer
Trustee or director, Officer
4.5$0
JAMES W ROYLE JRSecretary
Trustee or director, Officer
4.5$0
MICHAEL THACKERTrustee
Trustee or director
3.5$0
BRIAN WILLIAMSVice President
Trustee or director, Officer
4.5$0
ELIZABETH PAINTrustee
Trustee or director
3.5$0
JON SPENARDVice President
Trustee or director, Officer
4.5$0
TRAVIS ARMSTRONGTrustee
Trustee or director
3.5$0
990 for the year ended June 30, 2023: 12 people
NameTitleHours / weekCompensation
CHERYL BOWDEN-RENNATrustee
Trustee or director
3.5$0
BAILEY JAGGERSTrustee
Trustee or director
3.5$0
JAMES EIGHMEYTrustee
Trustee or director
3.5$0
G TIMOTHY GROSSPresident
Trustee or director, Officer
4.5$0
ANA GUTIERREZ BRILLTrustee
Trustee or director
3.5$0
JAMES W ROYLE JRSecretary
Trustee or director, Officer
4.5$0
MICHAEL THACKERTrustee
Trustee or director
3.5$0
BRIAN WILLIAMSVice President
Trustee or director, Officer
4.5$0
STEPHEN LAMBERTTrustee
Trustee or director
3.5$0
ELIZABETH PAINTrustee
Trustee or director
3.5$0
JON SPENARDTrustee
Trustee or director
3.5$0
TEODORA PODESTATreasurer
Trustee or director, Officer
4.5$0

Address and contacts

Address (IRS master file)
16666 SAN PASQUAL VALLEY RD, ESCONDIDO, CA 92027-7001
In care of
% MARSHA TEPNER
Principal officer (990 for 2024)
BRIAN WILLIAMS, 16666 SAN PASQUAL VALLEY ROAD, ESCONDIDO, CA 92027
Signed the 990
STEPHANIE SANDOVAL, Executive Director
Phone
(760) 291-0370
Return prepared by
Bonk Cushman Eagle & Garcia

California records

California keeps its own records of charities and corporations. Search them by EIN 33-0574573 or by the name SAN DIEGO ARCHAEOLOGICAL CENTER.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

THE MISSION OF THE SAN DIEGO ARCHAEOLOGICAL CENTER IS TO PROMOTE THE IMPORTANCE OF CULTURAL RESOURCES THROUGH EDUCATION AND PRESERVE THEM IN PARTNERSHIP WITH TRIBAL AND OTHER COMMUNITIES.THERE ARE OVER 30,000 ARCHAEOLOGICAL SITES IN SAN DIEGO COUNTY. IN THE FACE OF EXPANDING DEVELOPMENT, THESE CULTURAL RESOURCES ARE AT RISK OF DESTRUCTION. WHEN THESE IRREPLACEABLE SITES AND ARTIFACTS ARE DESTROYED, IT CREATES A PERMANENT GAP IN OUR UNDERSTANDING OF SAN DIEGOS PAST. THE CENTER PRESERVES OVER 2 MILLION OF THESE ARTIFACTS AND ASSOCIATED DOCUMENTS ACROSS 1,430 ARCHAEOLOGICAL COLLECTIONS. EDUCATION IS A CORNERSTONE OF THE CENTERS WORK. MUSEUM EXHIBITS INCLUDE HALLMARKS OF THE HOLOCENE, AN INTERACTIVE EXHIBIT FEATURING ARCHAEOLOGICAL SITES AROUND THE WORLD, AND FACT OR FICTION: HOLLYWOOD, HOAXES, AND HEARSAY, WHICH INVESTIGATES THE SCIENTIFIC EVIDENCE (OR LACK THEREOF) FOR COMMONLY HELD ARCHAEOLOGICAL BELIEFS. ADULT PROGRAMS INVOLVE LECTURES ON LOCAL AND INTERNATIONAL ARCHAEOLOGICAL RESEARCH

990 for the year ended June 30, 2025

Program accomplishments

  • During FY 24-25,the Center served 8,485 people in 411 educational and community programs. There were over 2,007 visitors to the museum, and 46 active volunteers and interns donated 3,960 hours in collections, library, GIS, education, and administrative departments. The Center currently curates 1,430 archaeological collections.
    Expenses $395,382

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
33-0574573
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1995
Accounting year ends
June
Files
Form 990 or 990-EZ
Assets (IRS master file)
$900,846
Income (IRS master file)
$597,811

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$595,830$497,703$900,846IRS
990June 2024$473,914$431,061$791,381IRS
990June 2023$493,341$404,807$743,173XML
990June 2022$526,539$332,774$653,418IRS
990June 2021–––IRS
990June 2019–––IRS
990June 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 33-0574573).

Questions about SAN DIEGO ARCHAEOLOGICAL CENTER

What is the EIN of SAN DIEGO ARCHAEOLOGICAL CENTER?
The employer identification number (EIN) of SAN DIEGO ARCHAEOLOGICAL CENTER is 33-0574573.
Is SAN DIEGO ARCHAEOLOGICAL CENTER tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1995.
Are donations to SAN DIEGO ARCHAEOLOGICAL CENTER tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SAN DIEGO ARCHAEOLOGICAL CENTER file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of SAN DIEGO ARCHAEOLOGICAL CENTER due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SAN DIEGO ARCHAEOLOGICAL CENTER last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2025.
Who is the principal officer of SAN DIEGO ARCHAEOLOGICAL CENTER?
The 990 for the year ended June 30, 2025 names BRIAN WILLIAMS.
Who are the officers and directors of SAN DIEGO ARCHAEOLOGICAL CENTER?
The 990 for the year ended June 30, 2025 lists 12 people; 1 received compensation from the organization, the highest $72,292 (STEPHANIE SANDOVAL, Trustee / E.D.).
How much revenue does SAN DIEGO ARCHAEOLOGICAL CENTER have?
On its 990 for the year ended June 30, 2025 it reported revenue of $595,830, expenses of $497,703 and total assets of $900,846 at year end.

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