angola,_indiana | ispartof | steuben_county,_indiana <tsp> angola,_indiana | country | united_states <tsp> angola,_indiana | ispartof | pleasant_township,_steuben_county,_indiana <tsp> angola,_indiana | areatotal | 1655 (square kilometres) <sep> angola is a city in pleasant township, steuben county, indiana, united states the population was 8,612 at the 2010 census the city is the county seat of steuben county angola was founded by thomas gale and cornelius gilmore on june 28, 1838, and is home to trine university the town is served by i-69 and the indiana toll road (i-80 and i-90) 
angola. indiana. is part of steuben county. united states. angola is in pleasant township which is part of steuben county. and has a total area of 16.55 square kilometres.pleasant township, steuben county indiana united states