
Total Traffic Volume & Performance in Iowa County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,728 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 17.9% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.7 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. | 6.5% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.7 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $77,547 |
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The average monitored road in Iowa County, Iowa carries 1,728 vehicles per day. Across its 302 miles of monitored roads, that adds up to 954,057 vehicle-miles traveled per day (≈348 million per year). About 1 in 6 vehicles is a truck, well above the 11.0% across Iowa - a freight-heavy mix.
Congestion 44% below the Iowa average
At 1,728 vehicles per day, the average monitored road in Iowa carries 43% less traffic than the state average of 3,042, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 1.1% of Iowa's statewide total of vehicle-miles. By volume, Iowa's 1,728 vehicles per day outpaces 50% of counties in Iowa.
Journey times here (33.7 minutes on average) closely track the state level. Its average travel time of 33.7 minutes is longer than 54% of counties in Iowa.
The congestion ratio of 6.5% is 44% lower, pointing to smoother traffic flow than the state level - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Iowa County, Iowa
| Traffic | vehicles per day9,980 |
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| Trucks | 23.5% |
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| Average travel time | 59.3 min |
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| Congestion ratio | 22.3% |
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| Drivers’ average age | 43.4 yrs |
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| Drivers’ average income | $81,142 |
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A little more than half of the driving in Iowa County, Iowa happens on highways: 62% of all vehicle-miles. The average highway carries 9,980 vehicles per day, 544% more than the average non-highway road in the same area, which carries 1,549 vehicles per day.
Yet highways are only 17% of the road network, 52 miles in 60 segments, so each mile of them is 3.6 times as busy as the average road mile.
78% of counties in Iowa move less traffic on their highways.
More highway trucks than 97% of counties in Iowa
At 23.5%, highway truck share is 46% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 88% of counties in Iowa. Iowa's highway truck count is higher than 97% of counties in Iowa, at roughly 2,345 trucks per day.

Non-highway Traffic in Iowa County, Iowa
| Traffic | vehicles per day1,549 |
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| Trucks | 8.8% |
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| Average travel time | 33.1 min |
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| Congestion ratio | 6.1% |
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| Drivers’ average age | 48.5 yrs |
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| Drivers’ average income | $75,429 |
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A significant share of driving in Iowa County, Iowa, 38% of vehicle-miles, happens on local roads. A typical local road sees 1,549 vehicles per day.
Spread over 251 miles and 2,771 segments, 83% of the road network, local roads carry a lighter load per mile: 362,493 vehicle-miles traveled per day (≈132 million per year). About 1 in 11 vehicles on non-highway roads is a truck (8.8%).
Younger drivers than 89% of counties in Iowa
Non-highway roads carry a truck concentration that's 63% lower than the highway network.
At 45% lower than the state level, the non-highway congestion ratio of 6.1% signals easier movement on local roads.
67% of counties in Iowa see lower average driver income among trip origins than Iowa. Iowa's median driver age is lower than 89% of counties in Iowa.