California · West

Tick risk in Los Angeles County, California

Los Angeles County covers 141 towns and carries the 23rd-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 Los Angeles County

Peak-season modeled risk. Tick risk is local, even within one county.

At the summer peak, tick risk across Los Angeles County runs from Topanga (moderate) at the high end to Vernon (low) at the low end. The difference is habitat: forest cover across the county ranges from 0% to 68%, and more forest and woodland edge means more places ticks can quest for a host.

TopangaModerate risk
Rolling HillsModerate risk
BradburyModerate risk
San MarinoModerate risk
Green ValleyModerate risk

Tick species in Los Angeles 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 Los Angeles 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 Los Angeles 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 Los Angeles County, CA

Professional tick control across Los Angeles 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 Los Angeles County's more wooded towns.

How much does tick control cost in Los Angeles County?

Most Los Angeles 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.

Get a free tick control quote

From a vetted local tick exterminator serving Los Angeles County. No cost, no obligation.

Common questions about ticks in Los Angeles County

Which towns in Los Angeles County have the highest tick risk?

At the summer peak, Topanga carries the highest modeled tick risk in Los Angeles County, followed by Rolling Hills, Bradbury, San Marino, Green Valley. Risk tracks how wooded a town is: forest cover across Los Angeles County ranges from 0% to 68%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. Vernon sits at the low end. Every town has its own daily score, so check the one nearest you.

What ticks live in Los Angeles County?

CDC county surveillance does not yet list an established tick species for Los Angeles 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 Los Angeles County?

Los Angeles County reports about 0 Lyme cases per 100,000 people a year (U.S. CDC), the 23rd-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 Los Angeles County

Tick risk is local. Pick the town nearest you.