Tick Control in Illinois
Browse tick information for 23 cities across Illinois. Provider availability is not guaranteed.
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Tick context for Illinois
Blacklegged ticks are established across substantial parts of the Upper Midwest, but county-level establishment and pathogen prevalence vary. Wooded habitat, leaf litter, and the lawn-to-woods edge deserve more attention than open, sunny lawn.
Ticks to distinguish
- Blacklegged tick
- Established in many Upper Midwest counties and the principal regional tick associated with Lyme disease transmission.
- American dog tick
- Common across much of the region, especially in grassy and more open habitat.
- Lone star tick
- More common toward southern portions of the region; reported distribution continues to change.
Seasonal planning
Exposure can occur whenever temperatures permit activity. Planning should account for small nymphs during warmer months and adult blacklegged ticks during cooler fall periods rather than relying on one universal “peak month.”
Where to inspect first
- Woodlands and brushy trail margins
- Moist leaf litter and shaded yard edges
- Tall grass and wildlife travel corridors
Property action checklist
- 1Prioritize the lawn-to-woods perimeter during inspection
- 2Keep paths and play areas away from brush
- 3Use current county surveillance when estimating local species presence
Primary sources
- Where ticks live: U.S. distribution maps — Centers for Disease Control and Prevention
- Preventing tick bites and reducing yard exposure — Centers for Disease Control and Prevention
- Tickborne diseases — Minnesota Department of Health
Educational regional context, not a diagnosis, local surveillance report, or substitute for medical or veterinary advice. Seek healthcare guidance for symptoms after a tick bite.
Arlington Heights
Pop: 76,000
Midwest Region
Aurora
Pop: 181,000
Midwest Region
Berwyn
Pop: 57,000
Midwest Region
Bloomington
Pop: 79,000
Midwest Region
Bolingbrook
Pop: 74,000
Midwest Region
Champaign
Pop: 90,000
Midwest Region
Chicago
Pop: 2,665,000
Midwest Region
Cicero
Pop: 84,000
Midwest Region
Decatur
Pop: 70,000
Midwest Region
Des Plaines
Pop: 60,000
Midwest Region
Elgin
Pop: 114,000
Midwest Region
Evanston
Pop: 76,000
Midwest Region
Joliet
Pop: 150,000
Midwest Region
Naperville
Pop: 150,000
Midwest Region
Oak Lawn
Pop: 57,000
Midwest Region
Palatine
Pop: 68,000
Midwest Region
Peoria
Pop: 111,000
Midwest Region
Rockford
Pop: 147,000
Midwest Region
Schaumburg
Pop: 77,000
Midwest Region
Skokie
Pop: 67,000
Midwest Region
Springfield
Pop: 113,000
Midwest Region
Waukegan
Pop: 89,000
Midwest Region
Downers Grove
Pop: 50,000
Midwest Region
