Welch, West ia Wikipedia
Website. /welch. Welch is a city located in McDowell County in the State of West ia, United States. The population was 3,590 at the 2020 census, [2] though a 2021 census estimate put the population at 1,914, likely due to changes in city boundary lines. Incorporated as a city in 1893, it is the county seat of McDowell County.