
Total Traffic Volume & Performance in Henry County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,778 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 12.3% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.1 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. | 6.1% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $70,661 |
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A typical monitored road in Henry County, Iowa sees 1,778 vehicles per day, while its 283 miles of monitored roads together handle 590,232 vehicle-miles traveled per day (≈215 million per year). About 1 in 8 vehicles is a truck, in line with Iowa (11.0%).
Congestion 46% below the Iowa average
Henry's average daily traffic volume is 42% lower than the state average - 1,778 vehicles per day against 3,042 - suggesting less traffic load per road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.7% of Iowa's statewide total. Henry carries more traffic than 54% of counties in Iowa.
At 32.1 minutes, the average travel time matches the state level closely. On travel time, Henry runs shorter than 71% of counties in Iowa.
At 46% lower than the state level, the 6.1% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Henry County, Iowa
| Traffic | vehicles per day4,001 |
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| Trucks | 15.1% |
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| Average travel time | 49.3 min |
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| Congestion ratio | 8.6% |
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| Drivers’ average age | 49.4 yrs |
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| Drivers’ average income | $71,878 |
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Highways carry more than half of all travel in Henry County, Iowa (67% of vehicle-miles). The average highway carries 4,001 vehicles per day, 157% more than the average non-highway road in the same area, which carries 1,559 vehicles per day.
Highways make up 34% of the monitored road miles (95 miles, 248 segments), so they carry more than their share: 395,402 vehicle-miles traveled per day (≈144 million per year).
That is more highway travel volume than 64% of counties in Iowa.
A typical mix of freight and passenger traffic
At 15.1%, highway truck share is 6% lower than the state average. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
Henry's highway truck share (15.1%) is higher than 58% of counties in Iowa. Henry's highway truck count is lower than 55% of counties in Iowa, at roughly 603 trucks per day.

Non-highway Traffic in Henry County, Iowa
| Traffic | vehicles per day1,559 |
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| Trucks | 6.8% |
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| Average travel time | 30.4 min |
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| Congestion ratio | 5.9% |
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| Drivers’ average age | 48.4 yrs |
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| Drivers’ average income | $69,533 |
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Local roads carry a significant share of travel in Henry County, Iowa: 33% of all vehicle-miles. A typical local road sees 1,559 vehicles per day.
Local roads make up 66% of the monitored road miles (188 miles in 2,512 segments) but carry less than their share of travel: 194,829 vehicle-miles traveled per day (≈71.1 million per year). The truck share on non-highway roads is 6.8%.
Local congestion 47% below the Iowa average
Non-highway roads carry a truck concentration that's 55% lower than the highway network.
The non-highway congestion ratio of 5.9% is 47% lower than the state level, suggesting more efficient local mobility than the state average.
62% of counties in Iowa see higher average driver income among trip origins than Henry. The driver population here skews younger than 60% of counties in Iowa.