Sodus was in Ontario Co in 1810 & 1820. The county boundary went up through the middle of Sodus Bay with Seneca Co. being east of that line. Sodus was in Ontario County in 1800 and the county line was the same but it was Cayuga Co. Sodus was in Ontario Co. in 1790 and the county line was the same but it was Montgomery county east of the line. Bob