Which  county located in the U.S. state of Montana is Brockton  a town in
Brockton, Montana Brockton is a town in Roosevelt County, Montana, United States. The population was 255 at the 2010 census.
Williams County, North Dakota Williams County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 22,398. Its county seat is Williston. Between 2010 and 2016, according to Census Bureau estimates, it was the second-fastest growing county in the United States, trailing only neighboring McKenzie County, to its south.