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Traffic heat map of Morrow County, Oregon: 244 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Old Oregon Trail Highway

Morrow County, Oregon Traffic Counts

Traffic analytics for Morrow County, Oregon, calculated from real-world mobile and sensor networks on 762 road segments (244 road miles, about 1,690 ft each). About 1 in 6 vehicles here is a truck, against 1 in 11 across Oregon. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Morrow County, Oregon

Traffic

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

vehicles per day1,997
Trucks

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

16.2%
Average travel time

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

34.8 min
Congestion ratio

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

5.8%
Drivers’ average age

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

43.1 yrs
Drivers’ average income

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

$70,506

A typical monitored road in Morrow County, Oregon sees 1,997 vehicles per day, while its 244 miles of monitored roads together handle 735,709 vehicle-miles traveled per day (≈269 million per year). Freight weighs heavily here: trucks are 16.2% of traffic, against 9.2% across Oregon.

Quieter roads than 86% of counties in Oregon

At 1,997 vehicles per day, the average monitored road in Morrow carries 66% less traffic than the state average of 5,908, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.8% of Oregon's statewide total of vehicle-miles. Morrow carries less traffic than 86% of counties in Oregon.

Journey times here (34.8 minutes on average) closely track the state level. 51% of counties in Oregon have a longer average travel time than Morrow's 34.8 minutes.

Congestion runs 65% lower than the state level, at a ratio of 5.8%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Morrow County, Oregon

Trafficvehicles per day8,384
Trucks18.7%
Average travel time50.9 min
Congestion ratio17.7%
Drivers’ average age43.9 yrs
Drivers’ average income$72,160

Most travel in Morrow County, Oregon happens on highways, 75% of all vehicle-miles. The average highway carries 8,384 vehicles per day, 438% more than the average non-highway road in the same area, which carries 1,558 vehicles per day.

With 26% of the road miles (64 miles in 49 segments), highways punch above their length, carrying 554,264 vehicle-miles traveled per day (≈202 million per year).

Higher highway truck share than 81% of counties in Oregon

The concentration of trucks on highways (18.7%) is 56% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Morrow's highway truck share (18.7%) is higher than 81% of counties in Oregon. Morrow's highway truck count is higher than 69% of counties in Oregon, at roughly 1,564 trucks per day.

non-highway traffic icon

Non-highway Traffic in Morrow County, Oregon

Trafficvehicles per day1,558
Trucks8.6%
Average travel time33.6 min
Congestion ratio5.0%
Drivers’ average age41.8 yrs
Drivers’ average income$68,042

At 25% of vehicle-miles, local roads carry a smaller share of the traffic in Morrow County, Oregon than highways. A typical local road sees 1,558 vehicles per day.

Local roads make up 74% of the monitored road miles (180 miles in 713 segments) but carry less than their share of travel: 181,445 vehicle-miles traveled per day (≈66.2 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.6%).

Younger drivers than 94% of counties in Oregon

The concentration of trucks on non-highway roads is 54% lower than on highways.

The non-highway congestion ratio of 5.0% is 69% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have higher average income than 51% of counties in Oregon. The driver population here skews younger than 94% of counties in Oregon.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and PM peak 4:00 PM–5:00 PM, with volumes reaching approximately 81% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 24% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +13% versus the annual average.
Lowest month:
January is the quietest month, with volumes -19% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Morrow County, Oregon, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +13% in high season.

Morrow County vs. Oregon Traffic Comparison

Morrow County's biggest difference from the Oregon average is its truck share, 76% above it. Its average daily traffic per road, by contrast, is 66% below.

MetricMorrow CountyOregon averageDifference
Traffic1,9975,908-66.2%
Truck % (Total Traffic)16.2%9.2%+75.7%
Truck % (Highway)18.7%12.0%+55.6%
Avg. Travel Time34.8 min34.3 min+1.4%

How Morrow County compares

Morrow County against nearby counties

Against the 4 nearest areas, Morrow County runs 9.1 percentage points less truck traffic and sees 24.8% shorter typical trips; it has the third busiest roads of the five.

Morrow 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
Morrow County1,99716.2%735,70934.8 min5.8%
Gilliam County, Oregon1,43222.5%432,77457.5 min4.8%
Umatilla County, Oregon3,28615.6%2,380,85931.7 min10.4%
Wheeler County, Oregon78143.2%22,04942.5 min2.7%
Sherman County, Oregon2,19919.7%631,26053.2 min8.3%
Oregon average5,9089.2%N/A34.3 min16.6%

Morrow County ranked within Oregon

Average driver age places Morrow County #34 of 36 in Oregon - the bottom quarter of the state.

Morrow County ranked among 36 county-level areas in Oregon (1 = highest); measures without data in every county rank a smaller field, down to 33.
MeasureMorrow CountyOregon rank
Traffic volume (AADT)1,997#31 of 36
Highway vehicle-miles per day554,264#26 of 33
Truck share on highways18.7%#7 of 33
Highway trucks per day1,564#11 of 33
Average travel time34.8 min#19 of 36
Average driver income$70,506#18 of 36
Average driver age43.1 yrs#34 of 36

Morrow County ranks #7 of 33 on truck share on highways but #34 of 36 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Morrow County, Oregon

The three busiest roads in Morrow County average 13,874 vehicles a day, 6.9 times the county average of 1,997 across all its monitored roads.

Old Oregon Trail Highway leads with 20,391 vehicles a day, 3,513 of them trucks (17.2%). It also carries the most trucks.

Trips using Columbia River Highway are long: a median of 53.0 minutes against 34.8 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Old Oregon Trail HighwayMotorway · 20,391vehicles3,513trucks · 17.2%
Road class
Motorway
Congestion ratio
19.7%
Median trip time
47.6 min
Drivers’ median age
43.4 yrs
Drivers’ average income
$72,807

Delays build on Old Oregon Trail Highway: its congestion ratio of 20% over free-flow time is well above the county's 6%.

2Columbia River HighwayMotorway · 15,385vehicles3,021trucks · 19.6%
Road class
Motorway
Congestion ratio
16.0%
Median trip time
53.0 min
Drivers’ median age
44.3 yrs
Drivers’ average income
$71,471

Travel on Columbia River Highway's busiest stretch runs 16% over free-flow time, against 6% across the county, so expect slower peak hours.

3Main AvenuePrimary road · 5,846vehicles474trucks · 8.1%
Road class
Primary road
Congestion ratio
13.8%
Median trip time
31.9 min
Drivers’ median age
40.9 yrs
Drivers’ average income
$67,634

On its busiest stretch, Main Avenue carries 2.9 times the county average; trucks are 8.1% of it, below the county-wide 16.2%.

4East Main AvenuePrimary road · 5,719vehicles469trucks · 8.2%
Road class
Primary road
Congestion ratio
13.6%
Median trip time
31.1 min
Drivers’ median age
40.9 yrs
Drivers’ average income
$68,639

East Main Avenue peaks at 5,719 vehicles a day, 2.9 times the county average; trucks are 8.2% of it, below the county-wide 16.2%.

5Main StreetSecondary road · 3,329vehicles238trucks · 7.1%
Road class
Secondary road
Median trip time
27.7 min
Drivers’ median age
41.0 yrs
Drivers’ average income
$63,971

At 67% more than the county average, Main Street draws drivers from neighborhoods averaging $63,971 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Old Oregon Trail HighwayMotorway · #1 by traffic20,391vehicles3,513trucks · 17.2%
2Columbia River HighwayMotorway · #2 by traffic15,385vehicles3,021trucks · 19.6%
3Main AvenuePrimary road · #3 by traffic5,846vehicles474trucks · 8.1%
4East Main AvenuePrimary road · #4 by traffic5,719vehicles469trucks · 8.2%
5Main StreetSecondary road · #5 by traffic3,329vehicles238trucks · 7.1%
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

MorrowDepartment 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 Morrow County

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

Need segment-level traffic data?

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