Year Built Chart

	Before 1900	1900-1909	1910-1919	1920-1929	1930 or After
Gary	0%	4%	33%	50%	9%

East Chicago	3%	18%	40%	37%	3%

Chicago Heights	12%	35%	30%	23%	3%

Whiting	12%	31%	38%	16%	3%

Hammond	8%	13%	25%	43%	10%

Calumet City	11%	16%	21%	44%	7%