Oregon · West
Tick risk in Multnomah County, Oregon
Multnomah County covers 7 towns and carries the 3rd-highest tick-borne-disease baseline of Oregon's 36 counties, with a Lyme rate of 1 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 Multnomah County
Peak-season modeled risk. Tick risk is local, even within one county.
At the summer peak, tick risk across Multnomah County runs from Dunthorpe (moderate) at the high end to Wood Village (moderate) at the low end. The difference is habitat: forest cover across the county ranges from 37% to 97%, and more forest and woodland edge means more places ticks can quest for a host.
- DunthorpeModerate risk
- Maywood ParkModerate risk
- PortlandModerate risk
- GreshamModerate risk
- FairviewModerate risk
Tick species in Multnomah 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 Multnomah 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 Multnomah 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 Multnomah County, OR
Professional tick control across Multnomah 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 Multnomah County's more wooded towns.
How much does tick control cost in Multnomah County?
Most Multnomah 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 Multnomah County. No cost, no obligation.
Common questions about ticks in Multnomah County
Which towns in Multnomah County have the highest tick risk?
At the summer peak, Dunthorpe carries the highest modeled tick risk in Multnomah County, followed by Maywood Park, Portland, Gresham, Fairview. Risk tracks how wooded a town is: forest cover across Multnomah County ranges from 37% to 97%, and the more forest and woodland edge a town has, the more habitat ticks have to quest from. Wood Village sits at the low end. Every town has its own daily score, so check the one nearest you.
What ticks live in Multnomah County?
CDC county surveillance does not yet list an established tick species for Multnomah 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 Multnomah County?
Multnomah County reports about 1 Lyme cases per 100,000 people a year (U.S. CDC), the 3rd-highest of Oregon's 36 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 Multnomah County
Tick risk is local. Pick the town nearest you.