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OUTAGAMIE COUNTY HISTORICAL SOCIETY INC

EIN 39-1298304 APPLETON, WI

Browse the largest nonprofits in Wisconsin

Revenue 2025
$836,463
Expenses 2025
$804,220

Program services were 70.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
A82Z
Classification
2000
Street
330 E COLLEGE AVE

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 · 2025

Mission

TO INSPIRE PEOPLE OF ALL AGES TO DISCOVER AND APPRECIATE THE RICH HISTORY AND NATURAL WORD IN THE FOX VALLEY AREA.

  • FOUNDED IN 1872 AS A PIONEER ASSOCIATION, THE OUTAGAMIE COUNTY HISTORICAL SOCIETY INSPIRES PEOPLE TO DISCOVER AND APPRECIATE THE RICH HISTORY AND NATURAL WORLD IN THE FOX VALLEY THROUGH EXHIBITION, EDUCATION, AND COLLECTIONS. NOW AFFECTIONATELY KNOWN AS THE HISTORY MUSEUM AT THE CASTLE, DUE TO ITS LOCATION IN A FORMER MASONIC TEMPLE, THE ORGANIZATION IS A THRIVING CULTURAL INSTITUTION WITH DEEP TIES TO THE LOCAL COMMUNITY. THE HISTORY MUSEUM AT THE CASTLE EXPANDED ITS MISSION IN 2025 TO INCLUDE NATURAL HISTORY. TO FACILITATE THAT ADDITION, THE HISTORY MUSEUM HIRED TWO MUSEUM SPECIALISTS AND INCORPORATED THE WEIS EARTH SCIENCE COLLECTION, CONSISTING OF 38,054 SPECIMENS, INTO ITS REGULAR OPERATIONS. BY PRESERVING THE WEIS EARTH SCIENCE COLLECTION LOCALLY, THE PUBLIC WILL CONTINUE TO HAVE ACCESS TO LIVELY EARTH SCIENCE EXHIBITIONS AND PROGRAMMING THAT BENEFIT FOX VALLEY RESIDENTS, SCHOOLS, AND UNIVERSITIES. ADDING THE WEIS COLLECTION TO THE HISTORY MUSEUM'S DYNAMIC LOCAL HISTORY OFFERINGS IS ALSO EXPECTED TO GROW THE REGION'S TOURIST ECONOMY. IN ADDITION, THE HISTORY MUSEUM CONTINUED TO ENGAGE AUDIENCES WELL BEYOND ITS WALLS. THE MUSEUM SUPPORTS A SERIES OF FREE TRAVELING POP-UP EXHIBITS ON RELEVANT LOCAL HISTORY TOPICS. IN 2024 THE MUSEUM ADDED OUR AFGHAN NEIGHBORS TO THAT CATALOGUE OF EXHIBITS. WORLD RELIEF FOX VALLEY AND THE HISTORY MUSEUM PARTNERED TO CONDUCT ORAL HISTORY INTERVIEWS WITH EIGHT AFGHAN REFUGEES FORCED TO FLEE AFGHANISTAN IN 2021 AND RESETTLE IN THE FOX CITIES. THEIR STORIES BECAME THE BASIS FOR THIS GROUNDBREAKING EXHIBITION. THE EXHIBIT TOURED THROUGHOUT NORTHEAST AND CENTRAL WISCONSIN IN 2025. APPROXIMATELY 149,430 PEOPLE VIEWED OUR AFGHAN NEIGHBORS, INCLUDING STOPS AT THE HOLIDAY FOLK FAIR IN MILWAUKEE AND THE STATE CAPITAL IN MADISON. IN PURSUING OUR MISSION, THE BOARD OF DIRECTORS, STAFF, AND VOLUNTEERS FOSTER COMMUNITY PARTNERSHIPS THAT BUILD SOCIAL COHESION AND MEET LOCAL CHALLENGES. DOING SO EXPANDS EXPECTATIONS FOR WHAT A MUSEUM, AND OUR COMMUNITY, CAN BE.

    Expenses $565,015 · Revenue $110,432

As filed on the 2025 return. The filer continues this part on Schedule O, which is not shown here.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Dustin Mack

    EXECUTIVE DI

    Total calculated
    $91,074
    From this org
    $85,482
    From related orgs
    $0
    Other
    $5,592
    Hours/week
    40
  • Josh Berens

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Brad Cebulski

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Chris Dearing

    SECRETARY

    Total calculated
    $0
    Hours/week
    5
  • Ryan Didreckson

    TREASURER

    Total calculated
    $0
    Hours/week
    5
  • Joy Hagen

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Jayme Lehman

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Kelly Leopold

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Ken Melchert

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Jessica Micke

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • David Nimtz

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Monica Rico

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1
  • Adam Skarie

    PRESIDENT

    Total calculated
    $0
    Hours/week
    5
  • Ann Whalen

    PAST PRESIDE

    Total calculated
    $0
    Hours/week
    5
  • Pla Yang

    DIRECTOR

    Total calculated
    $0
    Hours/week
    1

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

  • 2025
    Revenue
    $836,463
    Expenses
    $804,220
    Contributions
    $703,171
    Grants paid
    $0
  • 2023
    Revenue
    $963,462
    Expenses
    $593,380
    Contributions
    $839,960
    Grants paid
    $0
  • 2022
    Revenue
    $1,124,480
    Expenses
    $675,349
    Contributions
    $933,609
    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
    $764,108
    Expenses
    $489,198
    Assets (EOY)
    $3,562,977
  • 2020 · 990

    Revenue
    $853,254
    Expenses
    $570,282
    Assets (EOY)
    $3,109,667
  • 2019 · 990

    Revenue
    $767,125
    Expenses
    $772,501
    Assets (EOY)
    $2,756,420
  • 2018 · 990

    Revenue
    $499,550
    Expenses
    $739,894
    Assets (EOY)
    $2,571,195
  • 2017 · 990

    Revenue
    $518,057
    Expenses
    $442,496
    Assets (EOY)
    $2,831,043
  • 2016 · 990

    Revenue
    $590,958
    Expenses
    $475,395
    Assets (EOY)
    $2,570,776
  • 2015 · 990

    Revenue
    $492,727
    Expenses
    $395,509
    Assets (EOY)
    $2,372,437
  • 2014 · 990

    Revenue
    $376,772
    Expenses
    $405,427
    Assets (EOY)
    $2,264,923
  • 2013 · 990

    Revenue
    $454,730
    Expenses
    $538,990
    Assets (EOY)
    $2,271,751
  • 2012 · 990

    Revenue
    not reported
    Expenses
    $740,693
    Assets (EOY)
    $2,189,276

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. Showing the 10 most recent; the API carries the rest.

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

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

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 1 November 2026, for every organization at once. Returns through tax year 2025, the newest we have parsed for this organization.