
Total Traffic Volume & Performance in Howard County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,242 |
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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. | 33.6 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. | 5.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $71,704 |
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The average monitored road in Howard County, Iowa carries 1,242 vehicles per day. Across its 178 miles of monitored roads, that adds up to 198,062 vehicle-miles traveled per day (≈72.3 million per year). Trucks are 12.3% of traffic, close to the 11.0% across Iowa.
Quieter roads than 83% of counties in Iowa
At 1,242 vehicles per day, the average monitored road in Howard carries 59% less traffic than the state average of 3,042, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Howard accounts for about 0.2% of Iowa's statewide total of vehicle-miles. 83% of counties in Iowa see more traffic than Howard's 1,242 vehicles per day.
Journey times here (33.6 minutes on average) closely track the state level. On travel time, Howard runs longer than 52% of counties in Iowa.
Congestion runs 49% lower than the state level, at a ratio of 5.8%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Howard County, Iowa
| Traffic | vehicles per day3,190 |
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| Trucks | 17.7% |
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| Average travel time | 67.6 min |
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| Drivers’ average age | 50.2 yrs |
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| Drivers’ average income | $73,030 |
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Highways carry a significant share of travel in Howard County, Iowa: 36% of all vehicle-miles. The average highway carries 3,190 vehicles per day, 200% more than the average non-highway road in the same area, which carries 1,064 vehicles per day.
That comes from just 12% of the monitored road miles: 22 miles in 148 segments, carrying 72,152 vehicle-miles traveled per day (≈26.3 million per year).
Higher highway truck share than 72% of counties in Iowa
The concentration of trucks on highways (17.7%) is 10% higher than the state average for similar road classifications. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.
Howard's highway truck share (17.7%) is higher than 72% of counties in Iowa. Howard's highway truck count is lower than 62% of counties in Iowa, at roughly 564 trucks per day.

Non-highway Traffic in Howard County, Iowa
| Traffic | vehicles per day1,064 |
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| Trucks | 9.3% |
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| Average travel time | 30.5 min |
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| Congestion ratio | 5.8% |
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| Drivers’ average age | 50.5 yrs |
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| Drivers’ average income | $71,520 |
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A little more than half of the driving in Howard County, Iowa happens on local roads: 64% of all vehicle-miles. On the average non-highway road, that comes to 1,064 vehicles per day.
Local roads make up 88% of the monitored road miles (157 miles in 1,614 segments) but carry less than their share of travel: 125,910 vehicle-miles traveled per day (≈46.0 million per year). About 1 in 11 vehicles on non-highway roads is a truck (9.3%).
Local congestion 48% below the Iowa average
Non-highway roads carry a truck concentration that's 48% lower than the highway network.
Non-highway congestion (5.8%) runs 48% lower than the state average, pointing to smoother local traffic flow.
Trip origins here have lower average income than 54% of counties in Iowa. Howard's median driver age is higher than 52% of counties in Iowa.