Illinois' 9th Congressional District covers:
Parts of McHenry County / parts or all the following cities:
Cary, Trout Valley; most of Lake in the Hills and Crystal Lake; north Algonquin; parts of Port Barrington, Barrington Hills, Fox River Grove, Lakewood.
Parts or all of the following Townships:
Algonquin Township
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Parts of Lake County / parts or all the following cities:
Forest Lake, Tower Lakes, most of Hawthorn Woods, western Buffalo Grove, and parts of Wauconda, Island Lake, Long Grove, Lake Barrington, Kildeer, Lake Zurich, North Barrington, Port Barrington, Fox River Grove.
Parts or all of the following Townships:
Ela Township, Fremont Township, Vernon Township, Cuba Township & Wauconda Township
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Parts of Cook County / parts or all the following cities:
Evanston, Wilmette [south of Lake Ave], Glencoe [part], Glenview, Northfield, Northbrook [SE], Skokie, Morton Grove, Niles, Lincolnwood, Golf, Park Ridge [NE], Des Plaines [part], Mount Prospect [north], Arlington Heights [NE], Prospect Heights [most], Wheeling [part], Buffalo Grove [Cook portion].
Parts or all of the following Townships:
Evanston Township, New Trier Township, Northfield Township, Niles Township, Maine Township & Wheeling Township
Parts or all of the all of the following Chicago Wards: 40th Ward, 46th Ward, 47th Ward, 48th Ward, 49th Ward & 50th Ward
Ward ↔ neighborhood alignments come from each ward’s official page (e.g., 49 = Rogers Park; 48 = Edgewater/part Uptown; 50 = West Ridge; 46 = Uptown; 47 = Lincoln Square; 40 = parts of West Ridge/Lincoln Square/Edgewater.)
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