Find Your Illinois City
Illinois' humid continental climate creates ideal conditions for allergen growth. The state experiences high spring tree pollen, summer grass pollen, and some of the nation's highest fall ragweed counts. Chicago's urban environment concentrates pollutants that worsen allergy symptoms, while agricultural areas contribute to high pollen exposure.
88 cities covered across Illinois - Find your community and discover effective sinus relief solutions.
Major Illinois Cities (8 cities)
Large Illinois Cities (21 cities)
Champaign
Pop: 89,670
Waukegan
Pop: 88,826
Cicero
Pop: 82,552
Bloomington
Pop: 79,844
Schaumburg
Pop: 77,784
Evanston
Pop: 75,570
Bolingbrook
Pop: 75,201
Arlington Heights
Pop: 75,071
Decatur
Pop: 69,290
Palatine
Pop: 67,908
Skokie
Pop: 67,824
Orland Park
Pop: 59,378
Des Plaines
Pop: 58,918
Tinley Park
Pop: 56,703
Oak Lawn
Pop: 56,690
Mount Prospect
Pop: 56,265
Normal
Pop: 54,284
Berwyn
Pop: 54,016
Wheaton
Pop: 53,648
Oak Park
Pop: 52,066
Hoffman Estates
Pop: 51,895
Growing Illinois Communities (59 cities)
Downers Grove
Pop: 49,670
Glenview
Pop: 48,705
Elmhurst
Pop: 46,556
Plainfield
Pop: 45,000
Lombard
Pop: 43,907
Moline
Pop: 42,985
DeKalb
Pop: 42,974
Buffalo Grove
Pop: 42,909
Belleville
Pop: 42,404
Urbana
Pop: 42,214
Bartlett
Pop: 41,105
Carol Stream
Pop: 40,438
Streamwood
Pop: 40,362
Romeoville
Pop: 40,000
Park Ridge
Pop: 39,584
Quincy
Pop: 39,463
Crystal Lake
Pop: 39,371
Hanover Park
Pop: 38,510
Wheeling
Pop: 38,313
Carpentersville
Pop: 37,983
Rock Island
Pop: 37,108
Addison
Pop: 36,942
Calumet City
Pop: 35,000
Oswego
Pop: 35,000
Glendale Heights
Pop: 34,208
Woodridge
Pop: 33,998
Northbrook
Pop: 33,170
St. Charles
Pop: 33,081
Elk Grove Village
Pop: 32,000
Pekin
Pop: 31,731
Algonquin
Pop: 31,000
Mundelein
Pop: 31,000
Highland Park
Pop: 30,176
Gurnee
Pop: 30,000
Niles
Pop: 29,198
Danville
Pop: 29,000
Galesburg
Pop: 29,000
Burbank
Pop: 28,925
Granite City
Pop: 27,549
Lansing
Pop: 27,317
Wilmette
Pop: 27,087
Round Lake Beach
Pop: 27,000
West Chicago
Pop: 26,998
Edwardsville
Pop: 26,000
Vernon Hills
Pop: 26,000
Batavia
Pop: 26,000
Lockport
Pop: 25,000
Alton
Pop: 25,000
Melrose Park
Pop: 24,000
Kankakee
Pop: 24,000
Westmont
Pop: 24,000
Freeport
Pop: 23,000
Morton Grove
Pop: 23,000
Maywood
Pop: 23,000
Geneva
Pop: 22,000
Darien
Pop: 22,000
Dolton
Pop: 21,426
Cary
Pop: 20,000
Lake Zurich
Pop: 20,000