Gilboa Main Street Historic District
Why it's listed
Gilboa's Main Street is a two-block stretch of mostly frame stores, hotels and houses along the Blanchard River in Putnam County, Ohio. Laid out in 1837 by Elisha Stout, Gilboa was the first village in Blanchard Township and grew faster than any other town in the county between 1846 and 1857. It competed for a railroad line and for the county seat, but the railroad was planned through Findlay, then ran to Ottawa in 1878, and Ottawa became the county seat. Growth stopped, and the street kept its buildings from before about 1880. Surviving structures include story-and-a-half river cabins, large 1840s hotels with pillared porches, an 1870s Grange Hall in brick Italianate style, an I.O.O.F. hall, a Township House, and an 1886 iron truss bridge. Fires in 1909, 1926 and 1932 changed the corner of Main and Pearl Streets. A local preservation group has begun restoration work, including a doctor's house.
Significance in brief: The nomination presents Gilboa as an early river village that grew rapidly from 1846 to 1857 and then stopped growing when railroads went to Findlay and Ottawa and Ottawa became county seat. As a result, the town remains much as it was built up to about 1880. The district is marked for commerce and exploration/settlement.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 79001927, listed February 27, 1979. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | Main St., Gilboa |
|---|---|
| County | Putnam County |
| Listed | February 27, 1979 |
| Reference number | 79001927 |
| Resource type | District |
| Period of significance | 1840-1899 |
| Architect / builder | Wrought Iron Bridge Company (Pearl Street Pratt truss bridge, 1886) |
| Architectural style | Vernacular frame buildings, with an Italianate brick Grange Hall, Queen Anne houses and a Romanesque church |
| Areas of significance | Commerce, Exploration/Settlement |
| Level of significance | Local |
| Status (as stated in the nomination) | Mixed use: residences, four businesses, and municipal buildings; many buildings reported vacant for 20-40 years, and restoration work has begun on Dr. Ray's house. |
| Acreage | 19 |
| Coordinates | 41.01667, -83.92264 (NPS GIS) |
What listing means for this property
This is a historic district. Buildings within its boundary are either contributing (they add to the district's significance) or non-contributing. Owners of contributing income-producing buildings can claim the 20% federal rehabilitation tax credit; homeowners should look at state credits. National Register districts impose no design review by themselves; a local historic district ordinance, if one exists, does (the difference explained).
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 79001927.
- Nomination form (PDF, National Archives) — catalog entry
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.