
Total Traffic Volume & Performance in Woodbury County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,467 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.6 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. | 12.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $79,280 |
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A typical monitored road in Woodbury County, Iowa sees 3,467 vehicles per day, while its 650 miles of monitored roads together handle 1,970,566 vehicle-miles traveled per day (≈719 million per year). Trucks are 9.5% of traffic, close to the 11.0% across Iowa.
Busier roads than 90% of counties in Iowa
Woodbury's average daily traffic volume is 14% higher than the state average - 3,467 vehicles per day against 3,042 - a critical factor for logistics and site planning. Across the whole network, that travel is about 2.4% of Iowa's statewide total. By volume, Woodbury's 3,467 vehicles per day outpaces 90% of counties in Iowa.
At 31.6 minutes, the average travel time matches the state level closely. Its average travel time of 31.6 minutes is shorter than 77% of counties in Iowa.
The congestion ratio of 12.6% runs slightly higher than the state level (10% higher) - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Woodbury County, Iowa
| Traffic | vehicles per day5,980 |
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| Trucks | 14.2% |
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| Average travel time | 35.6 min |
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| Congestion ratio | 12.3% |
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| Drivers’ average age | 46.3 yrs |
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| Drivers’ average income | $83,094 |
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Highways carry a significant share of travel in Woodbury County, Iowa: 44% of all vehicle-miles. The average highway carries 5,980 vehicles per day, 79% more than the average non-highway road in the same area, which carries 3,332 vehicles per day.
With 22% of the road miles (143 miles in 476 segments), highways punch above their length, carrying 875,792 vehicle-miles traveled per day (≈320 million per year).
83% of counties in Iowa move less traffic on their highways.
A typical mix of freight and passenger traffic
Highway truck concentration here runs 11% lower than the state average, at 14.2%. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
51% of counties in Iowa see a higher highway truck share than Woodbury's 14.2%. By raw truck volume, Woodbury carries more highway trucks than 59% of counties in Iowa.

Non-highway Traffic in Woodbury County, Iowa
| Traffic | vehicles per day3,332 |
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| Trucks | 5.7% |
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| Average travel time | 31.4 min |
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| Congestion ratio | 12.6% |
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| Drivers’ average age | 45.0 yrs |
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| Drivers’ average income | $77,357 |
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A little more than half of the driving in Woodbury County, Iowa happens on local roads: 56% of all vehicle-miles. A typical local road sees 3,332 vehicles per day.
Local roads make up 78% of the monitored road miles (507 miles in 8,851 segments) but carry less than their share of travel: 1,094,774 vehicle-miles traveled per day (≈400 million per year). About 1 in 18 vehicles on non-highway roads is a truck (5.7%).
Younger drivers than 92% of counties in Iowa
Compared to highways, non-highway routes see 60% fewer trucks by share.
Non-highway congestion (12.6%) runs slightly higher than the state level (14% higher).
Trip origins here have higher average income than 72% of counties in Iowa. 92% of counties in Iowa have an older driver population than Woodbury.