
Total Traffic Volume & Performance in Adair County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,810 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 24.8% |
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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. | 47.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $75,986 |
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The average monitored road in Adair County, Iowa carries 1,810 vehicles per day. Across its 190 miles of monitored roads, that adds up to 694,620 vehicle-miles traveled per day (≈254 million per year). About 1 in 4 vehicles is a truck, well above the 11.0% across Iowa - a freight-heavy mix.
Longer trips than 74% of counties in Iowa
At 1,810 vehicles per day, the average monitored road in Adair carries 40% 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 0.8% of Iowa's statewide total of vehicle-miles. 55% of counties in Iowa see less traffic than Adair's 1,810 vehicles per day.
At 35.6 minutes, the average travel time is 8% higher than the state level. On travel time, Adair runs longer than 74% of counties in Iowa.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Adair County, Iowa
| Traffic | vehicles per day9,247 |
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| Trucks | 30.7% |
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| Average travel time | 64.0 min |
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| Drivers’ average age | 46.5 yrs |
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| Drivers’ average income | $83,934 |
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Most travel in Adair County, Iowa happens on highways, 74% of all vehicle-miles. The average highway carries 9,247 vehicles per day, 494% more than the average non-highway road in the same area, which carries 1,557 vehicles per day.
With 27% of the road miles (51 miles in 51 segments), highways punch above their length, carrying 512,539 vehicle-miles traveled per day (≈187 million per year).
That is more highway travel volume than 74% of counties in Iowa.
The highest highway truck share of any county in Iowa
Highway truck concentration here runs 90% higher than the state average, at 30.7%. That marks Adair as a major freight corridor, where highway access is what logistics operators compete on.
By share, Adair has the highest highway truck concentration in Iowa, at 30.7%. At roughly 3,093 trucks per day, Adair carries the highest volume of highway trucks in Iowa.

Non-highway Traffic in Adair County, Iowa
| Traffic | vehicles per day1,557 |
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| Trucks | 8.3% |
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| Average travel time | 34.6 min |
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| Drivers’ average age | 51.3 yrs |
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| Drivers’ average income | $69,114 |
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At 26% of vehicle-miles, local roads carry a smaller share of the traffic in Adair County, Iowa than highways. On the average non-highway road, that comes to 1,557 vehicles per day.
Local roads make up 73% of the monitored road miles (140 miles in 1,502 segments) but carry less than their share of travel: 182,081 vehicle-miles traveled per day (≈66.5 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.3%).
Younger drivers than 73% of counties in Iowa
The concentration of trucks on non-highway roads is 73% lower than on highways.
Adair's average driver income is higher than 62% of counties in Iowa. The driver population here skews younger than 73% of counties in Iowa.