
Total Traffic Volume & Performance in Lee County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,066 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 11.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 36.1 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. | 6.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 51.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $64,041 |
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The average monitored road in Lee County, Iowa carries 2,066 vehicles per day. Across its 403 miles of monitored roads, that adds up to 764,760 vehicle-miles traveled per day (≈279 million per year). About 1 in 9 vehicles is a truck, in line with Iowa (11.0%).
Longer trips than 78% of counties in Iowa
At 2,066 vehicles per day, the average monitored road in Lee carries 32% less traffic than the state average of 3,042, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.9% of Iowa's statewide total. 69% of counties in Iowa see less traffic than Lee's 2,066 vehicles per day.
At 36.1 minutes, the average travel time is 10% higher than the state level. 78% of counties in Iowa have a shorter average travel time than Lee's 36.1 minutes.
The congestion ratio of 6.0% is 47% 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 Lee County, Iowa
| Traffic | vehicles per day3,413 |
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| Trucks | 14.8% |
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| Average travel time | 39.8 min |
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| Congestion ratio | 7.7% |
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| Drivers’ average age | 51.4 yrs |
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| Drivers’ average income | $63,019 |
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Travel in Lee County, Iowa splits roughly evenly, with about half of it (50% of vehicle-miles) on highways. The average highway carries 3,413 vehicles per day, 76% more than the average non-highway road in the same area, which carries 1,941 vehicles per day.
Highways make up 27% of the monitored road miles (109 miles, 259 segments), so they carry more than their share: 378,914 vehicle-miles traveled per day (≈138 million per year).
59% of counties in Iowa move less traffic on their highways.
Fewer highway trucks than 71% of counties in Iowa
The concentration of trucks on highways (14.8%) is 8% lower than the state average for similar road classifications. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
55% of counties in Iowa see a lower highway truck share than Lee's 14.8%. By raw truck volume, Lee carries fewer highway trucks than 71% of counties in Iowa.

Non-highway Traffic in Lee County, Iowa
| Traffic | vehicles per day1,941 |
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| Trucks | 7.6% |
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| Average travel time | 35.8 min |
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| Congestion ratio | 5.9% |
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| Drivers’ average age | 51.5 yrs |
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| Drivers’ average income | $64,483 |
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Travel in Lee County, Iowa splits roughly evenly, with about half of it (50% of vehicle-miles) on local roads. On the average non-highway road, that comes to 1,941 vehicles per day.
Local roads make up 73% of the monitored road miles (294 miles in 2,778 segments) but carry less than their share of travel: 385,845 vehicle-miles traveled per day (≈141 million per year). Trucks make up 7.6% of non-highway traffic, about 1 in 13 vehicles.
Drivers from lower-income areas than 91% of counties in Iowa
The concentration of trucks on non-highway roads is 49% lower than on highways.
Non-highway congestion (5.9%) runs 47% lower than the state average, pointing to smoother local traffic flow.
91% of counties in Iowa see higher average driver income among trip origins than Lee. Lee's median driver age is higher than 73% of counties in Iowa.