where is pomeroy washington
Sponsored Topics. Pomeroy is a city in Garfield County, Washington, United States. The population was 1,425 at the 2010 census. It is the county seat of Garfield County. Pomeroy is located at 46Â°28â²24â³N 117Â°35â²53â³W / 46.47333Â°N 117.59806Â°W / 46.47333; -117.59806 (46.473334, -117.598119).