The Otter Tail County Historical Society is dedicated to historic preservation, focusing on the maintenance and enhancement of museum exhibits, services, and historical research. With an operating budget of $476.5K and total revenue of $961.3K for the 2024 filing year, the organization demonstrates a robust financial scale supported by multiple funders. It does not rely on a single funder for 50% or more of its revenue, ensuring a diverse funding base for its mission.