California · West
Tick risk in Alameda County, California
Alameda County covers 19 towns and carries the 4th-highest tick-borne-disease baseline of California's 57 counties, with a Lyme rate of 0 cases per 100,000 people a year (0th of 0 counties in the West). Pick your town below for today's score, a 7-day outlook, and what's driving it.
Highest and lowest tick risk in Alameda County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across Alameda County runs from Piedmont (moderate) at the high end to Emeryville (low) at the low end. The difference is habitat: forest cover across the county ranges from 7% to 57%, and more forest and woodland edge means more places ticks can quest for a host.
- PiedmontModerate risk
- FairviewModerate risk
- Castro ValleyLow risk
- PleasantonLow risk
- Union CityLow risk
Tick species in Alameda County
CDC county surveillance (established or reported)
- Deer tickReported
- American dog tickReported
- Lone star tickNot established
- Gulf Coast tickNot established
Reported in this county for the deer tick, the main Lyme carrier. “Not established” means no CDC surveillance record for Alameda 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 Alameda 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 Alameda County, CA
Professional tick control across Alameda 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 Alameda County's more wooded towns.
How much does tick control cost in Alameda County?
Most Alameda 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 Alameda County. No cost, no obligation.
Common questions about ticks in Alameda County
Which towns in Alameda County have the highest tick risk?
At the summer peak, Piedmont carries the highest modeled tick risk in Alameda County, followed by Fairview, Castro Valley, Pleasanton, Union City. Risk tracks how wooded a town is: forest cover across Alameda County ranges from 7% to 57%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. Emeryville sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in Alameda County?
CDC county surveillance does not yet list an established tick species for Alameda County, but that reflects a surveillance gap, not absence. The blacklegged (deer) tick, the main Lyme carrier, is found across the west. Take the usual precautions after time outdoors.
Is Lyme disease common in Alameda County?
Alameda County reports about 0 Lyme cases per 100,000 people a year (U.S. CDC), the 4th-highest of California's 57 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 Alameda County
Tick risk is local. Pick the town nearest you.