Tick risk in Clark County, Illinois
Clark County covers 4 towns. CDC reports too few cases here to publish a county Lyme rate, but each town still has a daily score built from local weather, habitat, and season. Pick your town below for today's reading.
Highest and lowest tick risk in Clark County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across Clark County runs from Westfield (moderate) at the high end to Casey (low) at the low end. The difference is habitat: forest cover across the county ranges from 20% to 51%, and more forest and woodland edge means more places ticks can quest for a host.
- WestfieldModerate risk
- MartinsvilleModerate risk
- MarshallLow risk
- CaseyLow risk
Tick species in Clark County
CDC county surveillance (established or reported)
- Deer tickEstablished
- American dog tickEstablished
- Lone star tickReported
- Gulf Coast tickNot established
Established in this county for the deer tick, the main Lyme carrier. “Not established” means no CDC surveillance record for Clark County, not that a town is tick free. Source: CDC tick surveillance (ArboNET Tick Module), 2025.
Diseases found in local ticks
No CDC tick-testing records for Clark County. That is a surveillance gap, not a sign these diseases are absent. Lyme and other tickborne illnesses occur across the region.
Tick control in Clark County, IL
Professional tick control across Clark County usually means a barrier treatment along the lawn edge, leaf litter, stone walls, and shady borders where ticks wait for a host, applied two to four times a season by a licensed pest control company. It is the single most effective way to cut tick numbers in the part of the yard your family actually uses, and it matters most in Clark County's more wooded towns.
How much does tick control cost in Clark County?
Most Clark County homeowners pay about $100 to $200 per visit for professional tick spraying, or roughly $350 to $600 for a full season of barrier treatments, depending on lot size and how wooded the property is. Quotes are free, so it costs nothing to get a real number for your yard.
From a vetted local tick exterminator serving Clark County. No cost, no obligation.
Common questions about ticks in Clark County
Which towns in Clark County have the highest tick risk?
At the summer peak, Westfield carries the highest modeled tick risk in Clark County, followed by Martinsville, Marshall, Casey. Risk tracks how wooded a town is: forest cover across Clark County ranges from 20% to 51%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. Casey sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in Clark County?
CDC surveillance records 2 established tick species in Clark County: Deer tick, American dog tick. The blacklegged (deer) tick is the main carrier of Lyme disease in the Northeast. "Not established" for a species means there is no CDC surveillance record for the county, not that the tick is absent.
Is Lyme disease common in Clark County?
CDC reports too few cases in Clark County to publish a stable county Lyme rate, which is common in rural or low-population counties. That does not mean the risk is zero: Lyme and other tickborne illnesses occur across the Northeast.
All towns in Clark County
Tick risk is local. Pick the town nearest you.