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Traffic heat map of Walla Walla County, Washington: 416 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 9th Avenue and WA 125

Walla Walla County, Washington Traffic Counts

Our Walla Walla County, Washington traffic data covers 4,230 road segments over 416 road miles, with an average segment of just 519 ft. Trips here are among the 3 longest of any county in Washington. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Walla Walla County, Washington

Traffic

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

vehicles per day4,405
Trucks

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

8.3%
Average travel time

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

44.8 min
Congestion ratio

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

13.5%
Drivers’ average age

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

46.6 yrs
Drivers’ average income

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

$78,672

Our data shows 4,405 vehicles per day on the average road in Walla Walla County, Washington, and 1,241,225 vehicle-miles traveled per day (≈453 million per year) across its 416 miles of monitored roads. Trucks are 8.3% of traffic, more than the 7.1% across Washington.

Longer trips than 95% of counties in Washington

At 4,405 vehicles per day, the average monitored road in Walla Walla carries 40% less traffic than the state average of 7,322, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Walla Walla accounts for about 0.8% of Washington's statewide total of vehicle-miles. 58% of counties in Washington see less traffic than Walla Walla's 4,405 vehicles per day.

At 44.8 minutes, the average travel time is 35% higher than the state level. Its average travel time of 44.8 minutes is longer than 95% of counties in Washington.

The congestion ratio of 13.5% is 32% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Walla Walla County, Washington

Trafficvehicles per day5,981
Trucks10.3%
Average travel time38.0 min
Congestion ratio13.2%
Drivers’ average age46.7 yrs
Drivers’ average income$80,292

A significant share of driving in Walla Walla County, Washington, 45% of vehicle-miles, happens on highways. The average highway carries 5,981 vehicles per day, 42% more than the average non-highway road in the same area, which carries 4,226 vehicles per day.

Highways make up 24% of the monitored road miles (101 miles, 433 segments), so they carry more than their share: 552,663 vehicle-miles traveled per day (≈202 million per year).

Fewer highway trucks than 69% of counties in Washington

Highway truck concentration here runs 8% higher than the state average, at 10.3%. The highway traffic mix is typical for Washington: neither freight- nor commuter-dominated.

Walla Walla's highway truck share (10.3%) is higher than 53% of counties in Washington. 69% of counties in Washington see more highway trucks per day than Walla Walla's roughly 617.

non-highway traffic icon

Non-highway Traffic in Walla Walla County, Washington

Trafficvehicles per day4,226
Trucks6.7%
Average travel time45.5 min
Congestion ratio13.5%
Drivers’ average age46.6 yrs
Drivers’ average income$77,858

Local roads carry more than half of all travel in Walla Walla County, Washington (55% of vehicle-miles). A typical local road sees 4,226 vehicles per day.

Spread over 315 miles and 3,797 segments, 76% of the road network, local roads carry a lighter load per mile: 688,562 vehicle-miles traveled per day (≈251 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.7%).

Local congestion 31% below the Washington average

Compared to highways, non-highway routes see 35% fewer trucks by share.

Non-highway congestion (13.5%) runs 31% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have higher average income than 53% of counties in Washington. 55% of counties in Washington have an older driver population than Walla Walla.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 2:00 PM to 8:00 PM, with volumes reaching approximately 71% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 11% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +10% versus the annual average.
Lowest month:
January is the quietest month, with volumes -18% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Walla Walla County, Washington, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +10% in high season.

Walla Walla County vs. Washington Traffic Comparison

Of the four measures, average daily traffic per road differs most: Walla Walla County runs 40% below the Washington average. Its average travel time, by contrast, is 35% above.

MetricWalla Walla CountyWashington averageDifference
Traffic4,4057,322-39.8%
Truck % (Total Traffic)8.3%7.1%+16.4%
Truck % (Highway)10.3%9.5%+8.4%
Avg. Travel Time44.8 min33.2 min+35.0%

How Walla Walla County compares

Walla Walla County against nearby counties

Nothing in this table sets Walla Walla County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five.

Walla Walla County and the 4 nearest county-level areas by centroid distance, with the Washington average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Walla Walla County4,4058.3%1,241,22544.8 min13.5%
Franklin County, Washington5,2479.5%2,212,41831.7 min17.1%
Columbia County, Washington2,03511.1%78,69744.4 min7.2%
Garfield County, Washington1,87313.2%70,25157.5 min5.6%
Benton County, Washington6,1128.2%4,794,57632.4 min18.9%
Washington average7,3227.1%N/A33.2 min19.9%

Walla Walla County ranked within Washington

Walla Walla County sits in Washington's top three on average travel time.

Walla Walla County ranked among 39 county-level areas in Washington (1 = highest); measures without data in every county rank a smaller field, down to 33.
MeasureWalla Walla CountyWashington rank
Traffic volume (AADT)4,405#17 of 39
Highway vehicle-miles per day552,663#22 of 33
Truck share on highways10.3%#16 of 33
Highway trucks per day617#23 of 33
Average travel time44.8 min#3 of 39
Average driver income$78,672#19 of 39
Average driver age46.6 yrs#22 of 39

Busiest roads in Walla Walla County, Washington

On their busiest stretches, the three busiest roads in Walla Walla County carry 20,954 vehicles a day on average, 4.8 times the typical road in the county (4,405).

9th Avenue leads with 22,433 vehicles a day, 1,135 of them trucks (5.1%). Lewis and Clark Trail carries the most trucks, 1,707 a day (10.6% of its traffic), although it ranks #4 for all traffic.

Southeast Myra Road is a local road at heart: the median trip using it lasts 28.3 minutes, against 44.8 for the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
19th AvenuePrimary road · 22,433vehicles1,135trucks · 5.1%
Road class
Primary road
Congestion ratio
34.8%
Median trip time
41.2 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$72,290

Travel on 9th Avenue's busiest stretch runs 35% over free-flow time, against 14% across the county, so expect slower peak hours.

2WA 125Trunk road · 20,618vehicles1,221trucks · 5.9%
Road class
Trunk road
Congestion ratio
29.0%
Median trip time
29.4 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$73,292

WA 125 is a local road at heart: the median trip using it lasts 29.4 minutes, against 44.8 for the county.

3Chestnut StreetSecondary road · 19,812vehicles841trucks · 4.2%
Road class
Secondary road
Congestion ratio
47.5%
Median trip time
57.2 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$67,122

Chestnut Street is one of the more congested roads here: trips take 48% longer than at free-flow speed, against 14% county-wide.

4Lewis and Clark TrailTrunk road · 16,138vehicles1,707trucks · 10.6%
Road class
Trunk road
Congestion ratio
19.6%
Median trip time
43.0 min
Drivers’ median age
42.7 yrs
Drivers’ average income
$86,378

Lewis and Clark Trail carries 3.7 times the county average on its busiest stretch, where the median trip lasts 43.0 minutes.

5Southeast Myra RoadTrunk road · 14,518vehicles666trucks · 4.6%
Road class
Trunk road
Congestion ratio
13.7%
Median trip time
28.3 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$73,959

At 3.3 times the county average, Southeast Myra Road draws drivers from neighborhoods averaging $73,959 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Lewis and Clark TrailTrunk road · #4 by traffic16,138vehicles1,707trucks · 10.6%
2WA 125Trunk road · #2 by traffic20,618vehicles1,221trucks · 5.9%
39th AvenuePrimary road · #1 by traffic22,433vehicles1,135trucks · 5.1%
4US 12Motorway · 9,764vehicles936trucks · 9.6%
Road class
Motorway
Congestion ratio
10.7%
Median trip time
34.2 min
Drivers’ median age
46.4 yrs
Drivers’ average income
$81,800

The busiest stretch of US 12 carries 2.2 times the county average; trucks are 9.6% of it, above the county-wide 8.3%.

5Rose StreetPrimary road · 12,683vehicles863trucks · 6.8%
Road class
Primary road
Congestion ratio
31.6%
Median trip time
46.9 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$68,456

On its busiest stretch, Rose Street carries 2.9 times the county average; trucks are 6.8% of it, below the county-wide 8.3%.

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

Walla WallaDepartment 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 Walla Walla County

The same traffic breakdown for the areas closest to Walla Walla County, Washington.

Need segment-level traffic data?

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