Connecticut · Northeast
Tick risk in Litchfield County, Connecticut
Litchfield County covers 26 towns. Its CDC Lyme rate of 126 cases per 100,000 people a year ranks in the top 8% of U.S. counties for reported Lyme disease. CDC surveillance lists Deer tick and American dog tick as established here. Pick your town below for today's score, a 7-day outlook, and what's driving it.
Highest and lowest tick risk in Litchfield County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across Litchfield County runs from Barkhamsted (high) at the high end to North Canaan (moderate) at the low end. The difference is habitat: forest cover across the county ranges from 73% to 95%, and more forest and woodland edge means more places ticks can quest for a host.
- BarkhamstedHigh risk
- ColebrookHigh risk
- NorfolkModerate risk
- CanaanModerate risk
- CornwallModerate risk
Tick species in Litchfield County
CDC county surveillance (established or reported)
- Deer tickEstablished
- American dog tickEstablished
- Lone star tickNot established
- Gulf Coast tickNot established
Established in this county for the deer tick, the main Lyme carrier. “Not established” means no CDC surveillance record for Litchfield 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 Litchfield 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 Litchfield County, CT
Professional tick control across Litchfield 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 Litchfield County's more wooded towns.
How much does tick control cost in Litchfield County?
Most Litchfield 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 Litchfield County. No cost, no obligation.
Common questions about ticks in Litchfield County
Which towns in Litchfield County have the highest tick risk?
At the summer peak, Barkhamsted carries the highest modeled tick risk in Litchfield County, followed by Colebrook, Norfolk, Canaan, Cornwall. Risk tracks how wooded a town is: forest cover across Litchfield County ranges from 73% to 95%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. North Canaan sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in Litchfield County?
CDC surveillance records 2 established tick species in Litchfield 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 Litchfield County?
Litchfield County reports about 126 Lyme cases per 100,000 people a year (U.S. CDC), in the top 8% of U.S. counties for reported Lyme disease (the 2nd-highest of Connecticut's 8 counties). Lyme is the dominant blacklegged-tick disease, so TickZone uses this county rate as the disease baseline behind every town's score.
All towns in Litchfield County
Tick risk is local. Pick the town nearest you.