
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 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.3% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 44.8 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 13.5% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.6 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $78,672 |
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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 in Walla Walla County, Washington
| Traffic | vehicles per day5,981 |
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| Trucks | 10.3% |
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| Average travel time | 38.0 min |
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| Congestion ratio | 13.2% |
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| Drivers’ average age | 46.7 yrs |
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| Drivers’ average income | $80,292 |
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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 in Walla Walla County, Washington
| Traffic | vehicles per day4,226 |
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| Trucks | 6.7% |
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| Average travel time | 45.5 min |
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| Congestion ratio | 13.5% |
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| Drivers’ average age | 46.6 yrs |
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| Drivers’ average income | $77,858 |
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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.