There are 27,317 residents in Crown Point, which is 17.7 square miles and 732ft above sea level.
There are 29,698 residents in East Chicago, which is 16.2 square miles and 591ft above sea level. It was settled in 1889 and is governed by a Mayor-Council local government.
There are 29,059 residents in Hobart, which is 26.7 square miles and 623ft above sea level. It was settled in 1889 (as a town), 1921 (as a city) and is governed by a City local government.
There are 12,572 residents in Lake Station, which is 8.4 square miles and 620ft above sea level.
There are 9,276 residents in Lowell, which is 5.3 square miles and 669ft above sea level. It was settled in 1834.
There are 35,246 residents in Merrillville, which is 33.3 square miles and 656ft above sea level. It was settled in 1971 and is governed by a Town local government.