Tick risk in New Castle County, Delaware
New Castle County covers 13 towns and carries the 1st-highest tick-borne-disease baseline of Delaware's 3 counties, with a Lyme rate of 33 cases per 100,000 people a year (100th of 1378 counties in the South). 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 New Castle County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across New Castle County runs from Ardencroft (moderate) at the high end to Newport (low) at the low end. The difference is habitat: forest cover across the county ranges from 19% to 98%, and more forest and woodland edge means more places ticks can quest for a host.
- ArdencroftModerate risk
- ArdenModerate risk
- ArdentownModerate risk
- BellefonteModerate risk
- OdessaModerate risk
Tick species in New Castle County
CDC county surveillance (established or reported)
- Deer tickEstablished
- American dog tickEstablished
- Lone star tickReported
- Gulf Coast tickReported
Established in this county for the deer tick, the main Lyme carrier. “Not established” means no CDC surveillance record for New Castle County, not that a town is tick free. Source: CDC tick surveillance (ArboNET Tick Module), 2025.
Diseases found in local ticks
Pathogens detected in ticks tested from New Castle County (CDC tick-testing surveillance, 2025). This lists what has been found, not how common it is.
Tick control in New Castle County, DE
Professional tick control across New Castle 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 Castle County's more wooded towns.
How much does tick control cost in New Castle County?
Most New Castle 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 Castle County. No cost, no obligation.
Common questions about ticks in New Castle County
Which towns in New Castle County have the highest tick risk?
At the summer peak, Ardencroft carries the highest modeled tick risk in New Castle County, followed by Arden, Ardentown, Bellefonte, Odessa. Risk tracks how wooded a town is: forest cover across New Castle County ranges from 19% to 98%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. Newport sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in New Castle County?
CDC surveillance records 2 established tick species in New Castle 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 New Castle County?
New Castle County reports about 33 Lyme cases per 100,000 people a year (U.S. CDC), the 100th-highest of 1378 counties in the South and the 1st-highest of Delaware's 3 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 Castle County
Tick risk is local. Pick the town nearest you.