
Total Traffic Volume & Performance in Harrison County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day2,050 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 15.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.6 min |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 50.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $79,841 |
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Our data shows 2,050 vehicles per day on the average road in Harrison County, Iowa, and 854,649 vehicle-miles traveled per day (≈312 million per year) across its 328 miles of monitored roads. At 15.4%, the truck share runs above the 11.0% across Iowa: about 1 in 7 vehicles.
Longer trips than 76% of counties in Iowa
Harrison sees 33% lower average daily traffic volume than the state average (2,050 vehicles per day against 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 1.0% of Iowa's statewide total of vehicle-miles. Harrison carries more traffic than 68% of counties in Iowa.
The average trip takes 35.6 minutes, 8% higher than the state level. On travel time, Harrison runs longer than 76% of counties in Iowa.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Harrison County, Iowa
| Traffic | vehicles per day5,236 |
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| Trucks | 19.9% |
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| Average travel time | 60.1 min |
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| Drivers’ average age | 48.9 yrs |
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| Drivers’ average income | $80,122 |
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A little more than half of the driving in Harrison County, Iowa happens on highways: 62% of all vehicle-miles. The average highway carries 5,236 vehicles per day, 184% more than the average non-highway road in the same area, which carries 1,846 vehicles per day.
With 23% of the road miles (74 miles in 131 segments), highways punch above their length, carrying 531,797 vehicle-miles traveled per day (≈194 million per year).
That is more highway travel volume than 75% of counties in Iowa.
Higher highway truck share than 75% of counties in Iowa
At 19.9%, highway truck share is 24% 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 75% of counties in Iowa. 71% of counties in Iowa see fewer highway trucks per day than Harrison's roughly 1,042.

Non-highway Traffic in Harrison County, Iowa
| Traffic | vehicles per day1,846 |
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| Trucks | 7.9% |
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| Average travel time | 34.0 min |
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| Drivers’ average age | 50.5 yrs |
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| Drivers’ average income | $79,696 |
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Local roads carry a significant share of travel in Harrison County, Iowa: 38% of all vehicle-miles. A typical local road sees 1,846 vehicles per day.
Local roads make up 77% of the monitored road miles (254 miles in 2,048 segments) but carry less than their share of travel: 322,852 vehicle-miles traveled per day (≈118 million per year). Trucks make up 7.9% of non-highway traffic, about 1 in 13 vehicles.
Drivers from higher-income areas than 79% of counties in Iowa
Non-highway roads carry a truck concentration that's 60% lower than the highway network.
Trip origins here have higher average income than 79% of counties in Iowa. Harrison's median driver age is lower than 55% of counties in Iowa.