Walsh County, ND neighbors Grand Forks near Grafton metropolitan centre giving a 2020 estimated population standing at 11,945 making it the 4th most populous county located hereabouts. Its county seat is Grafton with other cities include Park River & Hoople-Grafton itself correspondes out to Walsh’s largestcity aside from acknowledged country seat. This area had been established from Pembina and Cavalier Counties back in 1881 when local citizens petitioned for new administrative boundaries - posthumously named after Massachusetts Senator George H Walsh witnessed through state during preceding era Rutherford Hayes .