Mission
TO FOSTER AND PROMOTE THE STUDY OF THE HISTORY OF MARATHON COUNTY AND THE SURROUNDING AREA, AND IN CONNECTION THEREWITH, TO COLLECT, PRESERVE, AND DISPLAY HISTORICAL RECORDS, DOCUMENTS, AND OBJECTS FOR FUTURE GENERATIONS.
Public Charity
MARATHON COUNTY HISTORICAL SOCIETY
MARATHON COUNTY HISTORICAL SOCIETY is a nonprofit organization categorized as Public Charity based in WAUSAU, WI. Its most recent IRS filing (2025) reports revenue of $5.8M, expenses of $753K, total assets of $20.0M. Imperigo tracks 29 reported grant relationships connected to this organization totaling approximately $827K.
EIN: 390875968
WAUSAU, WI
Historical Societies & Historic Preservation
NTEE: A82
Latest filing: 2025
Total Revenue$5.8M
Total Expenses$753K
Total Assets$20.0M
Grant Records29
Funding Total$827K
Filing Years2021–2025
Where $100 goes at Marathon County Historical Society
How Marathon County Historical Society divides every $100 it spends, from its own Form 990 filings, averaged across 8 years.
$65
Programs
the work itself
$35
Management
running the organization
$0
Fundraising
none reported
No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.
Inside the $65 for programs
$65
Museum exhibits & programs provide education both within the museum & at outside locations
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
HISTORIC AND CULTURAL PRESERVATION
$526,000
HISTORIC AND CULTURAL PRESERVATION
$129,450
FAMILY SERVICES AND COUNSELING
$23,425
LIBRARIES AND MUSEUMS
$24,150
2020 ANNUAL DISTRIBUTION
$12,500
Showing up to 5 of 29 total records — full history available with membership.
Officers & Directors
DIRECTOR
Andrew Dudley Shannon
DIRECTOR
Bill Bertram
EXECUTIVE DI
Blake Opal-Wahoske
DIRECTOR
Brett Barker
DIRECTOR
Brian Williams
DIRECTOR
Dorothy Maxfield
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $5.8M | $753K | $20.0M |
| 2024 | $3.2M | $657K | $14.0M |
| 2023 | $399K | $653K | $10.9M |
| 2022 | $414K | $557K | $10.2M |
| 2021 | $399K | $477K | $11.5M |
Between 2021 and 2025, reported annual revenue grew from $399K to $5.8M (+1363%), with total assets most recently reported at $20.0M.
Interactive year-over-year charts and full filing details available with membership.