
Total Traffic Volume & Performance in Black Hawk County, Iowa
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,561 |
|---|
Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.1% |
|---|
Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.8 min |
|---|
Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 10.6% |
|---|
Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 44.2 yrs |
|---|
Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $78,556 |
|---|
A typical monitored road in Black Hawk County, Iowa sees 3,561 vehicles per day, while its 706 miles of monitored roads together handle 2,621,516 vehicle-miles traveled per day (≈957 million per year). Trucks are a smaller part of the mix than across Iowa: 9.1% against 11.0%.
Busier roads than 91% of counties in Iowa
Black Hawk sees 17% higher average daily traffic volume than the state average (3,561 vehicles per day against 3,042), suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, Black Hawk accounts for about 3.1% of Iowa's statewide total of vehicle-miles. 91% of counties in Iowa see less traffic than Black Hawk's 3,561 vehicles per day.
The average trip takes 33.8 minutes, on par with the state level. Its average travel time of 33.8 minutes is longer than 55% of counties in Iowa.
Congestion is somewhat lower than the state level, at a ratio of 10.6% (7% lower).
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Black Hawk County, Iowa
| Traffic | vehicles per day8,617 |
|---|
| Trucks | 13.0% |
|---|
| Average travel time | 38.5 min |
|---|
| Congestion ratio | 15.8% |
|---|
| Drivers’ average age | 44.8 yrs |
|---|
| Drivers’ average income | $78,603 |
|---|
Highways carry a significant share of travel in Black Hawk County, Iowa: 44% of all vehicle-miles. The average highway carries 8,617 vehicles per day, 161% more than the average non-highway road in the same area, which carries 3,299 vehicles per day.
Highways make up 20% of the monitored road miles (139 miles, 460 segments), so they carry more than their share: 1,145,693 vehicle-miles traveled per day (≈418 million per year).
That is more highway travel volume than 90% of counties in Iowa.
Lower highway truck share than 70% of counties in Iowa
At 13.0%, highway truck share is 19% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 70% of counties in Iowa. By raw truck volume, Black Hawk carries more highway trucks than 64% of counties in Iowa.

Non-highway Traffic in Black Hawk County, Iowa
| Traffic | vehicles per day3,299 |
|---|
| Trucks | 6.1% |
|---|
| Average travel time | 33.5 min |
|---|
| Congestion ratio | 10.4% |
|---|
| Drivers’ average age | 44.0 yrs |
|---|
| Drivers’ average income | $78,528 |
|---|
A little more than half of the driving in Black Hawk County, Iowa happens on local roads: 56% of all vehicle-miles. A typical local road sees 3,299 vehicles per day.
Spread over 567 miles and 8,890 segments, 80% of the road network, local roads carry a lighter load per mile: 1,475,823 vehicle-miles traveled per day (≈539 million per year). About 1 in 16 vehicles on non-highway roads is a truck (6.1%).
Younger drivers than 94% of counties in Iowa
Compared to highways, non-highway routes see 53% fewer trucks by share.
Non-highway congestion (10.4%) runs slightly lower than the state level (7% lower).
70% of counties in Iowa see lower average driver income among trip origins than Black Hawk. 94% of counties in Iowa have an older driver population than Black Hawk.