Mission
Preservation of history in Whitman County
Public Charity
Whitman County Historical Society
Whitman County Historical Society, of Colfax, WA, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $550K in revenue, $227K in expenses, $2.2M in total assets. 7 publicly reported grants to this organization, totaling roughly $79K, appear in IRS filings.
EIN: 237228130
Colfax, WA
Historical Societies & Historic Preservation
NTEE: A82
Latest filing: 2025
Total Revenue$550K
Total Expenses$227K
Total Assets$2.2M
Grant Records7
Funding Total$79K
Filing Years2021–2025
Where $100 goes at Whitman County Historical Society
How Whitman County Historical Society divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.
$100
Programs
the work itself
<$1
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 $100 for programs
$100
Preservation of history in Whitman County
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
UNRESTRICTED GENERAL SUPPORT
$30,000
UNRESTRICTED GENERAL SUPPORT
$6,000
UNRESTRICTED GENERAL SUPPORT
$20,000
to assist with funding a feasibility study for the Palouse Center for Agricultural History
$7,700
UNRESTRICTED GENERAL SUPPORT
$5,000
Showing up to 5 of 7 total records — full history available with membership.
Officers & Directors
Director
Carol Larsen
Director
Denise Mahnkey
Secretary
Janet Barstow
Vice President
Jeff Pietila
Treasurer
Jon Anderson
Director
Krista Boyd
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $550K | $227K | $2.2M |
| 2024 | $446K | $125K | $1.9M |
| 2023 | $555K | $173K | $1.6M |
| 2022 | $663K | $166K | $1.2M |
| 2021 | $530K | $357K | $684K |
Between 2021 and 2025, reported annual revenue grew from $530K to $550K (+4%), with total assets most recently reported at $2.2M.
Interactive year-over-year charts and full filing details available with membership.