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Traffic heat map of Yamhill County, Oregon: 446 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Portland Road

Yamhill County, Oregon Traffic Counts

TrafficZoom tracks traffic on 446 road miles in Yamhill County, Oregon, divided into 11,044 segments averaging 213 ft. Its drivers come from neighborhoods among the top 5 counties in Oregon for household income. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Yamhill County, Oregon

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day4,183
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

7.0%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

33.7 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

12.7%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

46.0 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$90,297

Our data shows 4,183 vehicles per day on the average road in Yamhill County, Oregon, and 1,747,809 vehicle-miles traveled per day (≈638 million per year) across its 446 miles of monitored roads. Trucks are a smaller part of the mix than across Oregon: 7.0% against 9.2%.

Shorter trips than 66% of counties in Oregon

At 4,183 vehicles per day, the average monitored road in Yamhill carries 29% less traffic than the state average of 5,908, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 2.0% of Oregon's statewide total. 57% of counties in Oregon see less traffic than Yamhill's 4,183 vehicles per day.

The average trip takes 33.7 minutes, on par with the state level. Its average travel time of 33.7 minutes is shorter than 66% of counties in Oregon.

Congestion runs 23% lower than the state level, at a ratio of 12.7%, which means smoother traffic flow - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Yamhill County, Oregon

Trafficvehicles per day13,093
Trucks7.7%
Average travel time35.5 min
Congestion ratio28.9%
Drivers’ average age46.2 yrs
Drivers’ average income$88,926

Travel in Yamhill County, Oregon splits roughly evenly, with about half of it (51% of vehicle-miles) on highways. The average highway carries 13,093 vehicles per day, 357% more than the average non-highway road in the same area, which carries 2,862 vehicles per day.

That comes from just 16% of the monitored road miles: 70 miles in 1,426 segments, carrying 891,222 vehicle-miles traveled per day (≈325 million per year).

Lower highway truck share than 84% of counties in Oregon

Highway truck concentration here runs 36% lower than the state average, at 7.7%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Yamhill's highway truck share (7.7%) is lower than 84% of counties in Oregon. Yamhill's highway truck count is lower than 59% of counties in Oregon, at roughly 1,007 trucks per day.

non-highway traffic icon

Non-highway Traffic in Yamhill County, Oregon

Trafficvehicles per day2,862
Trucks6.2%
Average travel time33.4 min
Congestion ratio10.3%
Drivers’ average age45.6 yrs
Drivers’ average income$91,609

Travel in Yamhill County, Oregon splits roughly evenly, with about half of it (49% of vehicle-miles) on local roads. A typical local road sees 2,862 vehicles per day.

Local roads make up 84% of the monitored road miles (376 miles in 9,618 segments) but carry less than their share of travel: 856,587 vehicle-miles traveled per day (≈313 million per year). Trucks make up 6.2% of non-highway traffic, about 1 in 16 vehicles.

Drivers from higher-income areas than 91% of counties in Oregon

Non-highway roads carry a truck concentration that's 19% lower than the highway network.

At 36% lower than the state level, the non-highway congestion ratio of 10.3% signals easier movement on local roads.

Trip origins here have higher average income than 91% of counties in Oregon. The driver population here skews younger than 74% of counties in Oregon.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 4:00 PM–5:00 PM, with volumes reaching approximately 95% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 18% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +7% versus the annual average.
Lowest month:
February is the quietest month, with volumes -11% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Yamhill County, Oregon, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +7% in high season.

Yamhill County vs. Oregon Traffic Comparison

Yamhill County's biggest difference from the Oregon average is its highway truck share, 36% below it. Its average daily traffic per road is also 29% below.

MetricYamhill CountyOregon averageDifference
Traffic4,1835,908-29.2%
Truck % (Total Traffic)7.0%9.2%-24.4%
Truck % (Highway)7.7%12.0%-35.9%
Avg. Travel Time33.7 min34.3 min-1.8%

How Yamhill County compares

Yamhill County against nearby counties

Set against the average of the 4 areas nearest to it, Yamhill County moves 36.9% of the total daily travel; it has the fourth busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Yamhill County and the 4 nearest county-level areas by centroid distance, with the Oregon average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Yamhill County4,1837.0%1,747,80933.7 min12.7%
Washington County, Oregon7,9805.8%9,063,24533.4 min21.1%
Tillamook County, Oregon3,2488.7%679,82831.3 min11.0%
Polk County, Oregon4,5397.1%1,522,96435.6 min15.3%
Marion County, Oregon5,7168.4%7,660,19334.2 min17.1%
Oregon average5,9089.2%N/A34.3 min16.6%

Yamhill County ranked within Oregon

Yamhill County sits in the top quarter of the Oregon field on average driver income, at #4 of 36.

Yamhill County ranked among 36 county-level areas in Oregon (1 = highest); measures without data in every county rank a smaller field, down to 33.
MeasureYamhill CountyOregon rank
Traffic volume (AADT)4,183#16 of 36
Highway vehicle-miles per day891,222#18 of 33
Truck share on highways7.7%#28 of 33
Highway trucks per day1,007#20 of 33
Average travel time33.7 min#24 of 36
Average driver income$90,297#4 of 36
Average driver age46.0 yrs#27 of 36

The two ends of this table sit far apart: #4 of 36 on average driver income, against #28 of 33 on truck share on highways.

Busiest roads in Yamhill County, Oregon

Traffic concentrates on a few corridors: the three busiest roads average 29,554 vehicles a day, against 4,183 on the average road in Yamhill County.

Portland Road is the busiest road, at 33,543 vehicles a day, 1,398 of them trucks (4.2%). Pacific Highway carries the most trucks, 1,933 a day (7.1% of its traffic), although it ranks #3 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Portland RoadPrimary road · 33,543vehicles1,398trucks · 4.2%
Road class
Primary road
Congestion ratio
47.9%
Median trip time
33.5 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$98,827

Portland Road is one of the more congested roads here: trips take 48% longer than at free-flow speed, against 13% county-wide.

2Southeast Three Mile LaneTrunk road · 27,814vehicles1,827trucks · 6.6%
Road class
Trunk road
Congestion ratio
29.9%
Median trip time
38.7 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$82,544

Southeast Three Mile Lane carries 6.6 times the county average on its busiest stretch, where the median trip lasts 38.7 minutes.

3Pacific HighwayTrunk road · 27,304vehicles1,933trucks · 7.1%
Road class
Trunk road
Congestion ratio
67.5%
Median trip time
38.3 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$95,181

Delays build on Pacific Highway: its congestion ratio of 67% over free-flow time is well above the county's 13%.

4Southwest Pacific HighwayTrunk road · 26,674vehicles1,550trucks · 5.8%
Road class
Trunk road
Median trip time
38.2 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$109,409

At 6.4 times the county average, Southwest Pacific Highway draws drivers from neighborhoods averaging $109,409 in household income.

5Northeast Pacific HighwayTrunk road · 21,429vehicles1,129trucks · 5.3%
Road class
Trunk road
Congestion ratio
44.7%
Median trip time
30.6 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$81,588

A main artery: Northeast Pacific Highway's busiest stretch carries 5.1 times the county average; trucks are 5.3% of it, below the county-wide 7.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Pacific HighwayTrunk road · #3 by traffic27,304vehicles1,933trucks · 7.1%
2Southeast Three Mile LaneTrunk road · #2 by traffic27,814vehicles1,827trucks · 6.6%
3Southwest Pacific HighwayTrunk road · #4 by traffic26,674vehicles1,550trucks · 5.8%
4Portland RoadPrimary road · #1 by traffic33,543vehicles1,398trucks · 4.2%
5Southeast Dayton BypassTrunk road · 18,656vehicles1,371trucks · 7.3%
Road class
Trunk road
Congestion ratio
39.0%
Median trip time
40.0 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$87,283

Southeast Dayton Bypass carries 4.5 times the county average on its busiest stretch, where the median trip lasts 40.0 minutes.

How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

YamhillDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Yamhill County

The same traffic breakdown for the areas closest to Yamhill County, Oregon.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.