Putnam County

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View the 2025 U.S. Census demographic profile for Putnam County

Putnam County — County Seat: Ottawa

2026 Population Estimate: 34,600  |  Official Website: https://putnamcountyohio.gov/

Putnam County is a small but highly productive northwest Ohio county with the city of Ottawa as its county seat. The county has one of the strongest agricultural economies in Ohio, with extremely fertile former Black Swamp soils supporting corn, soybeans, sugar beets, and seed production. The county has a very strong German Catholic heritage — visible in the beautiful church-dominated skylines of its numerous small towns — and a cohesive, prosperous community character. Major employers include Blanchard Valley Regional Health Center, The Andersons Inc. (grain elevators and processing), and various manufacturers. The county is home to the Putnam County Courthouse — a National Historic Landmark — and the scenic Blanchard River valley. Putnam County is widely recognized as one of the most financially healthy and well-managed small counties in Ohio.

▸ Key Industries & Major Employers
Manufacturing, agriculture, and food processing.
Major employers include Blanchard Valley Health System (regional), Putnam County Schools, and several manufacturers including Grob Systems (machine tools) and Great Lakes Foundry Group. Agriculture—grain and soybeans—is the dominant economic activity.

▸ Notable Economic Development Initiatives
Putnam County Economic Development works with RGP Ohio for industrial recruitment. Grob Systems' continued investment anchors the county's precision manufacturing identity. Rural broadband expansion targets agricultural townships.

▸ Infrastructure & Investment Highlights
US-224 and SR-65 are primary roads. The Blanchard River supports recreational assets. Rail access serves manufacturers. The county is investing in water system improvements for new industrial sites.