Connecticut · Northeast
Tick risk in New Haven County, Connecticut
New Haven County covers 27 towns. Its CDC Lyme rate of 39 cases per 100,000 people a year ranks in the top 13% of U.S. counties for reported Lyme disease. CDC surveillance lists Deer tick, American dog tick, and Lone star 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 New Haven County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across New Haven County runs from Wolcott (high) at the high end to New Haven (moderate) at the low end. The difference is habitat: forest cover across the county ranges from 46% to 91%, and more forest and woodland edge means more places ticks can quest for a host.
- WolcottHigh risk
- ProspectHigh risk
- SeymourHigh risk
- NaugatuckHigh risk
- WoodbridgeHigh risk
Tick species in New Haven County
CDC county surveillance (established or reported)
- Deer tickEstablished
- American dog tickEstablished
- Lone star tickEstablished
- Gulf Coast tickReported
Established in this county for the deer tick, the main Lyme carrier. “Not established” means no CDC surveillance record for New Haven 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 New Haven 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 New Haven County, CT
Professional tick control across New Haven 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 New Haven County's more wooded towns.
How much does tick control cost in New Haven County?
Most New Haven 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 New Haven County. No cost, no obligation.
Common questions about ticks in New Haven County
Which towns in New Haven County have the highest tick risk?
At the summer peak, Wolcott carries the highest modeled tick risk in New Haven County, followed by Prospect, Seymour, Naugatuck, Woodbridge. Risk tracks how wooded a town is: forest cover across New Haven County ranges from 46% to 91%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. New Haven sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in New Haven County?
CDC surveillance records 3 established tick species in New Haven County: Deer tick, American dog tick, Lone star 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 New Haven County?
New Haven County reports about 39 Lyme cases per 100,000 people a year (U.S. CDC), in the top 13% of U.S. counties for reported Lyme disease (the 7th-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 New Haven County
Tick risk is local. Pick the town nearest you.