Noble County, OH borders Washington near Caldwell metropolitan centre giving a 2020 estimated population standing at 14,820 making it the 53rd most populous county located in Ohio overall. Its county seat is Caldwell with other cities include Sarahsville & Summerfield-Caldwell itself equates out to Noble's largestcity aside from noted country seat. This area had been created out of Guernsey and Morgan Counties back in 1851 when local citizens petitioned for new administrative boundaries - posthumously named after Congressman John Noble stewardship era Millard Fillmore .