
Total Traffic Volume & Performance in Boise County, Idaho
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,833 |
|---|
Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.4% |
|---|
Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 58.1 min |
|---|
Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 3.8% |
|---|
Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 54.4 yrs |
|---|
Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $83,615 |
|---|
A typical monitored road in Boise County, Idaho sees 4,833 vehicles per day, while its 81 miles of monitored roads together handle 266,406 vehicle-miles traveled per day (≈97.2 million per year). About 1 in 11 vehicles is a truck, in line with Idaho (9.7%).
Longer trips than 98% of counties in Idaho
Boise sees 16% lower average daily traffic volume than the state average (4,833 vehicles per day against 5,734), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network, that travel is about 0.6% of Idaho's statewide total. By volume, Boise's 4,833 vehicles per day outpaces 84% of counties in Idaho.
At 58.1 minutes, the average travel time is 72% higher than the state level. On travel time, Boise runs longer than 98% of counties in Idaho.
The congestion ratio of 3.8% is 76% lower, pointing to smoother traffic flow than the state level - free-flowing roads make scheduled deliveries highly predictable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Boise County, Idaho
| Traffic | vehicles per day11,106 |
|---|
| Trucks | 9.7% |
|---|
| Average travel time | 60.4 min |
|---|
| Drivers’ average age | 54.4 yrs |
|---|
| Drivers’ average income | $83,242 |
|---|
Highways carry the vast majority of travel in Boise County, Idaho, 87% of all vehicle-miles. The average highway carries 11,106 vehicles per day, 997% more than the average non-highway road in the same area, which carries 1,013 vehicles per day.
Highways make up 51% of the monitored road miles (41 miles, 176 segments), so they carry more than their share: 232,604 vehicle-miles traveled per day (≈84.9 million per year).
Lower highway truck share than 71% of counties in Idaho
Highway truck concentration here runs 31% lower than the state average, at 9.7%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
71% of counties in Idaho see a higher highway truck share than Boise's 9.7%. By raw truck volume, Boise carries fewer highway trucks than 56% of counties in Idaho.

Non-highway Traffic in Boise County, Idaho
| Traffic | vehicles per day1,013 |
|---|
| Trucks | 7.7% |
|---|
| Average travel time | 56.8 min |
|---|
| Congestion ratio | 3.8% |
|---|
| Drivers’ average age | 55.1 yrs |
|---|
| Drivers’ average income | $85,730 |
|---|
Local roads carry only a small share of the traffic in Boise County, Idaho, 13% of all vehicle-miles. On the average non-highway road, that comes to 1,013 vehicles per day.
Spread over 40 miles and 289 segments, 49% of the road network, local roads carry a lighter load per mile: 33,802 vehicle-miles traveled per day (≈12.3 million per year). Trucks make up 7.7% of non-highway traffic, about 1 in 13 vehicles.
Drivers from higher-income areas than 93% of counties in Idaho
Compared to highways, non-highway routes see 21% fewer trucks by share.
Non-highway congestion (3.8%) runs 77% lower than the state average, pointing to smoother local traffic flow.
Trip origins here have higher average income than 93% of counties in Idaho. 84% of counties in Idaho have a younger driver population than Boise.