 simms is a census-designated place (cdp) in cascade county, montana, united states. the population was 354 at the 2010 census. it is part of the great falls, montana metropolitan statistical area. ==geography== simms is located at  (47.489984, -111.932102), in the sun river valley,  west of great falls,  south of choteau,  north of cascade and  east of augusta. according to the [[united states cens
Census-designated_places_in_Cascade_County,_Montana Census-designated_places_in_Montana