Nonprofit · EIN 23-7186194
SAN MATEO COUNTY HISTORICAL ASSOCIATION
Tax-exempt · REDWOOD CITY, CA 94063
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $7,181,050 | $1,893,416 | $5,287,634 | $28,847,113 | $175,525 | $28,671,588 |
| June 30, 2024 | 990 | $5,302,375 | $1,836,511 | $3,465,864 | $24,450,531 | $191,843 | $24,258,688 |
| June 30, 2023 | 990 | $2,411,954 | $1,894,504 | $517,450 | $20,786,726 | $151,520 | $20,635,206 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $5,344,386
- Membership dues
- $51,203
- Program service revenue
- $144,589
- Investment income
- $1,749,691
- Net rental income
- $65,423
- Net gain from sales of assets
- $1,489,065
- Net income from fundraising events
- -$125,764
- Net income from sales of inventory
- $2,725
- Other revenue
- -$57,616
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $242,255
- Other salaries and wages
- $779,711
- Salaries, compensation and benefits (total)
- $1,214,915
- Professional fundraising fees
- $0
- Occupancy
- $80,004
- Travel
- $3,751
- Depreciation
- $253,632
- Program services (functional)
- $1,581,677
- Management and general (functional)
- $177,237
- Fundraising (functional)
- $134,502
Balance sheet and other
- Total assets, start of year
- $24,450,531
- Total assets, end of year
- $28,847,113
- Total liabilities, end of year
- $175,525
- Net assets, end of year
- $28,671,588
- Land, buildings and equipment
- $4,790,200
- Publicly traded securities
- $4,909,505
- Net assets without donor restrictions
- $24,954,987
- Net assets with donor restrictions
- $3,716,601
- Gross receipts
- $14,996,190
- Employees
- 20
- Volunteers
- 300
- Year formed
- 1935
- 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.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MITCH POSTEL | PRESIDENT Officer | 40 | $242,255 |
| CARMEN BLAIR | DEPUTY DIREC Highest-paid employee | 40 | $145,444 |
| SHAWN DELUNA | CHAIRMAN Trustee or director, Officer | 1 | $0 |
| JIM RUANE | DIRECTOR Trustee or director, Officer | 1 | $0 |
| THERESE SMITH | SECRETARY Trustee or director, Officer | 1 | $0 |
| JOE WELCH III | TREASURER Trustee or director, Officer | 1 | $0 |
| JENNIFER ACHESON | DIRECTOR Trustee or director | 1 | $0 |
| WADE M AUBURY MD | DIRECTOR Trustee or director | 1 | $0 |
| KEITH BAUTISTA | DIRECTOR Trustee or director | 1 | $0 |
| JOE CARCIONE | DIRECTOR Trustee or director | 1 | $0 |
| BILL CHIANG | DIRECTOR Trustee or director | 1 | $0 |
| CHONITA E CLEARY | DIRECTOR Trustee or director | 1 | $0 |
| DONNA COLSON | DIRECTOR Trustee or director | 1 | $0 |
| DAN EVANS | DIRECTOR Trustee or director | 1 | $0 |
| GREG GALLI | DIRECTOR Trustee or director | 1 | $0 |
14 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| RAY IVERSON | DIRECTOR Trustee or director | 1 | $0 |
| KATHY KOPF | DIRECTOR Trustee or director | 1 | $0 |
| SUSAN KAY LANG | DIRECTOR Trustee or director | 1 | $0 |
| RICK MAYERSON | DIRECTOR Trustee or director | 1 | $0 |
| JULIE MORAN MD | DIRECTOR Trustee or director | 1 | $0 |
| BILL NICOLET | DIRECTOR Trustee or director | 1 | $0 |
| MIKE O'NEILL | DIRECTOR Trustee or director | 1 | $0 |
| BARBARA PIERCE | DIRECTOR Trustee or director | 1 | $0 |
| MARGARET A TAYLOR | DIRECTOR Trustee or director | 1 | $0 |
| BRUCE TOGNAZZINI | DIRECTOR Trustee or director | 1 | $0 |
| MARY UCCELLI | DIRECTOR Trustee or director | 1 | $0 |
| WILLIAM WESSELL | DIRECTOR Trustee or director | 1 | $0 |
| CHRISTINE WILLIAMS | DIRECTOR Trustee or director | 1 | $0 |
| JENNIFER WISE | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended June 30, 2024: 32 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MITCH POSTEL | PRESIDENT Officer | 40 | $233,852 | $4,770 |
| CARMEN BLAIR | DEPUTY DIREC Highest-paid employee | 40 | $130,584 | $8,666 |
| JOHN LA TORRA | CHAIRMAN Trustee or director, Officer | 1 | $0 | $0 |
| TRACY DELEUW | VICE CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| DEE EVA | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| CHRISTINE WILLIAMS | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| JENNIFER ACHESON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| THOMAS AMES | DIRECTOR Trustee or director | 1 | $0 | $0 |
| KEITH BAUTISTA | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SANDRA MCLELLAN BEHLING | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOHN BLAKE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOE CARCIONE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BILL CHIANG | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHONITA E CLEARY | DIRECTOR Trustee or director | 1 | $0 | $0 |
| DONNA COLSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SHAWN DELUNA | DIRECTOR Trustee or director | 1 | $0 | $0 |
| GREG GALLI | DIRECTOR Trustee or director | 1 | $0 | $0 |
| DON HORSLEY | DIRECTOR Trustee or director | 1 | $0 | $0 |
| RAY IVERSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| WALLY JANSEN | DIRECTOR Trustee or director | 1 | $0 | $0 |
| KATHY KOPF | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SUSAN KAY LANG | DIRECTOR Trustee or director | 1 | $0 | $0 |
| OLIVIA GARCIA MARTINEZ EDD | DIRECTOR Trustee or director | 1 | $0 | $0 |
| RICK MAYERSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BILL NICOLET | DIRECTOR Trustee or director | 1 | $0 | $0 |
| MIKE O'NEILL | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BARBARA PIERCE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JIM RUANE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOHN SHROYER | DIRECTOR Trustee or director | 1 | $0 | $0 |
| THERESE SMITH | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOE WELCH III | DIRECTOR Trustee or director | 1 | $0 | $0 |
| WILLIAM WESSELL | DIRECTOR Trustee or director | 1 | $0 | $0 |
990 for the year ended June 30, 2023: 32 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MITCH POSTEL | PRESIDENT Officer | 40 | $233,852 | $4,770 |
| CARMEN BLAIR | DEPUTY DIREC Highest-paid employee | 40 | $130,584 | $8,666 |
| JOHN LA TORRA | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| TRACY DELEUW | VICE CHAIR Trustee or director, Officer | 1 | $0 | $0 |
| DEE EVA | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| CHRISTINE WILLIAMS | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| JENNIFER ACHESON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| THOMAS AMES | DIRECTOR Trustee or director | 1 | $0 | $0 |
| KEITH BAUTISTA | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SANDRA MCLELLAN BEHLING | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOHN BLAKE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOE CARCIONE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BILL CHIANG | DIRECTOR Trustee or director | 1 | $0 | $0 |
| CHONITA E CLEARY | DIRECTOR Trustee or director | 1 | $0 | $0 |
| DONNA COLSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SHAWN DELUNA | DIRECTOR Trustee or director | 1 | $0 | $0 |
| GREG GALLI | DIRECTOR Trustee or director | 1 | $0 | $0 |
| DON HORSLEY | DIRECTOR Trustee or director | 1 | $0 | $0 |
| RAY IVERSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| WALLY JANSEN | DIRECTOR Trustee or director | 1 | $0 | $0 |
| KATHY KOPF | DIRECTOR Trustee or director | 1 | $0 | $0 |
| SUSAN LANG | DIRECTOR Trustee or director | 1 | $0 | $0 |
| OLIVIA GARCIA MARTINEZ EDD | DIRECTOR Trustee or director | 1 | $0 | $0 |
| RICK MAYERSON | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BILL NICOLET | DIRECTOR Trustee or director | 1 | $0 | $0 |
| MIKE O'NEILL | DIRECTOR Trustee or director | 1 | $0 | $0 |
| BARBARA PIERCE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JIM RUANE | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOHN SHROYER | DIRECTOR Trustee or director | 1 | $0 | $0 |
| THERESE SMITH | DIRECTOR Trustee or director | 1 | $0 | $0 |
| JOE WELCH | DIRECTOR Trustee or director | 1 | $0 | $0 |
| WILLIAM WESSELL | DIRECTOR Trustee or director | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 2200 BROADWAY ST, REDWOOD CITY, CA 94063-1639
- Principal officer (990 for 2024)
- MITCH POSTEL, 2200 BROADWAY ST, REDWOOD CITY, CA 94063
- Signed the 990
- MITCH POSTEL, PRESIDENT
- Phone
- (650) 299-0104
- Website
- WWW.HISTORYSMC.ORG
- Return prepared by
- CHAVAN & ASSOCIATES LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 23-7186194 or by the name SAN MATEO COUNTY HISTORICAL ASSOCIATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
THE ASSOCIATION'S COLLECTIONS ARE MADE UP OF OBJECTS THAT ARE HELD FOR EXHIBITION AND VARIOUS OTHER PROGRAM ACTIVITIES. EACH OF THESE ITEMS IS CATALOGED, PRESERVED, AND CARED FOR AND ACTIVITIES VERIFYING THEIR EXISTENCE AND ASSESSING THEIR CONDITION ARE PERFORMED CONTINUOUSLY. COLLECTION ITEMS ACQUIRED EITHER THROUGH PURCHASES OR DONATION ARE NOT CAPITALIZED. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN NET ASSETS WITHOUT DONOR RESTRICTIONS IF PURCHASED WITH ASSETS WITHOUT RESTRICTIONS AND AS A DECREASE IN NET ASSETS WITH DONOR RESTRICTIONS IF PURCHASED WITH DONOR-RESTRICTED ASSETS. CONTRIBUTIONS OF COLLECTION ITEMS ARE NOT RECOGNIZED IN THE STATEMENT OF ACTIVITIES. THE ASSOCIATION'S INSURANCE POLICY OF MUSEUM COLLECTIONS EXPIRED IN NOVEMBER 1995. THE BOARD OF DIRECTORS HAS DETERMINED THAT IT IS NOT FEASIBLE TO OBTAIN SIMILAR COVERAGE ON THE COLLECTIONS DUE TO THE HIGH PREMIUM COST.
Program accomplishments
- THE ORGANIZATION'S COLLECTIONS INCLUDE HISTORICAL DATA, INFORMATION, RELICS, OBJECTS AND RECORDS OF HISTORICAL INTEREST RELATING TO SAN MATEO COUNTY.Expenses $1,581,677 · revenue $51,203
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 23-7186194
- 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
- 1953
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $28,847,113
- Income (IRS master file)
- $14,996,190
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $7,181,050 | $1,893,416 | $28,847,113 | IRS |
| 990 | June 2024 | $5,302,375 | $1,836,511 | $24,450,531 | IRS |
| 990 | June 2023 | $2,411,954 | $1,894,504 | $20,786,726 | XML |
| 990 | June 2022 | $5,785,075 | $1,895,623 | $20,041,393 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 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 23-7186194).
Questions about SAN MATEO COUNTY HISTORICAL ASSOCIATION
- What is the EIN of SAN MATEO COUNTY HISTORICAL ASSOCIATION?
- The employer identification number (EIN) of SAN MATEO COUNTY HISTORICAL ASSOCIATION is 23-7186194.
- Is SAN MATEO COUNTY HISTORICAL ASSOCIATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1953.
- Are donations to SAN MATEO COUNTY HISTORICAL ASSOCIATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SAN MATEO COUNTY HISTORICAL ASSOCIATION 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 MATEO COUNTY HISTORICAL ASSOCIATION 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 MATEO COUNTY HISTORICAL ASSOCIATION 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 MATEO COUNTY HISTORICAL ASSOCIATION?
- The 990 for the year ended June 30, 2025 names MITCH POSTEL.
- Who are the officers and directors of SAN MATEO COUNTY HISTORICAL ASSOCIATION?
- The 990 for the year ended June 30, 2025 lists 29 people; 2 received compensation from the organization, the highest $242,255 (MITCH POSTEL, PRESIDENT).
- How much revenue does SAN MATEO COUNTY HISTORICAL ASSOCIATION have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $7,181,050, expenses of $1,893,416 and total assets of $28,847,113 at year end.
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