Nonattainment Populations By State, Nonattainment Area and County FY 2003

Illinois

STATE	COUNTY	2001.7.1 POPULATION	1-Hr O3 Classification	O3 WT	POPULATION FINAL WTED
US States and Territories (Total)		171,927,016			205,020,910

ILLINOIS		8,819,644			11,345,548
Chicago-Gary-Lake County
	Cook	5,350,269	Severe	1.3	6,955,350
	DuPage	912,044	Severe	1.3	1,185,657
	Grundy	38,331	Severe	1.3	49,830
	Kane	425,545	Severe	1.3	553,209
	Kendall	58,227	Severe	1.3	75,695
	Lake	661,111	Severe	1.3	859,444
	McHenry	270,504	Severe	1.3	351,655
	Will	536,416	Severe	1.3	697,341
St Louis, MO
	Madison	260,259	Moderate	1.1	286,285
	Monroe	28,507	Moderate	1.1	31,358
	St. Clair	256,599	Moderate	1.1	282,259
Jersey Co.
	Jersey Co	21,832	Maintenance	0.8	17,466