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OZAUKEE COUNTY HISTORICAL SOCIETY INC

EIN 39-1126207 CEDARBURG, WI

Revenue 2024
$160,867
Expenses 2024
$112,420

Program services were 85.5% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A99
Classification
1000
Street
PO BOX 206

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

Mission

THE OZAUKEE COUNTY HISTORICAL SOCIETY SEEKS TO PRESERVE, ADVANCE, DISSEMINATE KNOWLEDGE OF THE HISTORY AND HERITAGE OF OZAUKEE COUNTY THROUGH HISTORIC PRESERVATION, EDUCATION, AND PROGRAMMING.

Activities or mission (Part I)

PROVIDE KNOWLEDGE/HISTORY THROUGH HISTORIC PRESERVATION, EDUCATION, AND PROGRAMMING.

  • THE OZAUKEE COUNTY HISTORICAL SOCIETY CONTINUES TO MAINTAIN ITS OFFICE IN THE HISTORIC INTERURBAN DEPOT LOCATED IN CEDARBURG, WI AND CONTINUES TO MAINTAIN ITS OZAUKEE COUNTY PIONEER VILLAGE LOCATION IN SAUKVILLE. OZAUKEE COUNTY PIONEER VILLAGE INCLUDES 24 HISTORIC STRUCTURES THAT DATE BACK TO 1840. THE ORGANIZATION ALSO MAINTAINS STONY HILL SCHOOL IN FREDONIA, A ONE-ROOM SCHOOL FROM THE MID-1800'S THAT IS KNOWN TO BE THE BIRTHPLACE OF OUR NATIONAL FLAG DAY.

    Expenses $64,919 · Revenue $19,283

  • THE OZAUKEE COUNTY HISTORICAL SOCIETY INSTALLED NEW HVAC SYSTEMS ON TWO FLOORS OF ITS OFFICES AND ARCHIVES IN CEDARBURG. A GRANT WAS RECEIVED IN THE AMOUNT OF $12,000 FROM THE GREATER CEDARBURG FOUNDATION ALONG WITH OTHER PRIVATE DONATIONS OF WHICH $7,400 WAS COLLECTED IN 2023.

    Expenses $19,887

  • IN 2024, A 35-FOOT ANTIQUE WINDMILL WAS ERECTED AT THE ENTRANCE OF PIONEER VILLAGE WHICH EXEMPLIFIES OUR ROOTS IN FARMING AND RURAL HISTORY. AN ANTIQUE PUMP WAS ALSO INSTALLED ON THE WINDMILL PLATFORM. THE PROJECT WAS COMPLETED BY VOLUNTEERS

    Expenses $11,333

  • THE STONY HILL SCHOOL PLASTER WAS REPAIRED, NEW SHUTTERS WERE MADE, ROTTED FACIA BOARDS WERE REPLACED AND BOTH THE INTERIOR AND EXTERIOR WERE PAINTED. NEW ANTIQUE SCHOOLHOUSE LIGHT FIXTURES WERE DONATED AND INSTALLED.

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • KERI EICHNER

    DIRECTOR

    Total calculated
    $0
    Hours/week
    5

  • ASHLEY FULLERTON

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • LINDSEY HARNESS

    DIRECTOR

    Total calculated
    $0
    Hours/week
    2

  • RICHARD LIERSCH

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • DAN PAULUS

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

  • MARY ANN VELNETSKE

    PRESIDENT

    Total calculated
    $0
    Hours/week
    30

  • ALLEN BUCHHOLZ

    1ST VICE PRESIDENT

    Total calculated
    $0
    Hours/week
    30

  • DON BORGWARDT

    TREASURER

    Total calculated
    $0
    Hours/week
    15

  • BECKY MILLER

    SECRETARY

    Total calculated
    $0
    Hours/week
    2

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $160,867
    Expenses
    $112,420
    Contributions
    $107,974
    Grants paid
    $0
  • 2023
    Revenue
    $152,486
    Expenses
    $97,389
    Contributions
    $113,971
    Grants paid
    $0
  • 2022
    Revenue
    $133,637
    Expenses
    $80,022
    Contributions
    $97,310
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $127,444
    Expenses
    $65,886
    Assets (EOY)
    $3,736,751

  • 2020 · 990

    Revenue
    $129,594
    Expenses
    $104,181
    Assets (EOY)
    $3,675,150

  • 2019 · 990

    Revenue
    $102,551
    Expenses
    $86,343
    Assets (EOY)
    $3,723,625

  • 2018 · 990

    Revenue
    $130,641
    Expenses
    $98,400
    Assets (EOY)
    $274,519

  • 2017 · 990

    Revenue
    $110,275
    Expenses
    $132,206
    Assets (EOY)
    $242,721

  • 2016 · 990

    Revenue
    $131,132
    Expenses
    $87,396
    Assets (EOY)
    $264,652

  • 2015 · 990

    Revenue
    $215,316
    Expenses
    $130,771
    Assets (EOY)
    $220,915

  • 2014 · 990

    Revenue
    $135,246
    Expenses
    $192,073
    Assets (EOY)
    $136,514

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

Other IRS files

Auto-Revocation List

  • Exemption revoked 15 May 2013, reinstated 15 May 2013.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 13 October 2026 and read 26 October 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.