
Total Traffic Volume & Performance in Elmore County, Idaho
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,558 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 18.7% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.2 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. | 3.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 42.8 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $70,164 |
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The average monitored road in Elmore County, Idaho carries 4,558 vehicles per day. Across its 428 miles of monitored roads, that adds up to 2,556,881 vehicle-miles traveled per day (≈933 million per year). About 1 in 5 vehicles is a truck, well above the 9.7% across Idaho - a freight-heavy mix.
Congestion 78% below the Idaho average
Elmore's average daily traffic volume is 20% lower than the state average - 4,558 vehicles per day against 5,734 - suggesting less traffic load per road - a critical factor for logistics and site planning. In total volume terms, its road network carries about 5.7% of Idaho's statewide total of vehicle-miles. By volume, Elmore's 4,558 vehicles per day outpaces 79% of counties in Idaho.
At 30.2 minutes, the average travel time is 11% lower than the state level. Its average travel time of 30.2 minutes is shorter than 77% of counties in Idaho.
The congestion ratio of 3.6% is 78% 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 Elmore County, Idaho
| Traffic | vehicles per day9,578 |
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| Trucks | 22.3% |
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| Average travel time | 60.3 min |
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| Drivers’ average age | 44.6 yrs |
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| Drivers’ average income | $75,733 |
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Highways carry most of the traffic in Elmore County, Idaho: 76% of all vehicle-miles. The average highway carries 9,578 vehicles per day, 120% more than the average non-highway road in the same area, which carries 4,355 vehicles per day.
With 38% of the road miles (162 miles in 107 segments), highways punch above their length, carrying 1,933,859 vehicle-miles traveled per day (≈706 million per year).
By highway travel volume, that ranks Elmore in the top 3 counties in Idaho.
More highway trucks than 97% of counties in Idaho
Highway truck concentration here runs 59% higher than the state average, at 22.3%. That marks Elmore as a major freight corridor, where highway access is what logistics operators compete on.
88% of counties in Idaho see a lower highway truck share than Elmore's 22.3%. Elmore's highway truck count is higher than 97% of counties in Idaho, at roughly 2,140 trucks per day.

Non-highway Traffic in Elmore County, Idaho
| Traffic | vehicles per day4,355 |
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| Trucks | 7.3% |
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| Average travel time | 28.9 min |
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| Congestion ratio | 3.6% |
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| Drivers’ average age | 42.3 yrs |
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| Drivers’ average income | $62,587 |
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Local roads carry a smaller share of travel in Elmore County, Idaho, 24% of vehicle-miles; most driving happens on highways. A typical local road sees 4,355 vehicles per day.
Spread over 266 miles and 2,640 segments, 62% of the road network, local roads carry a lighter load per mile: 623,022 vehicle-miles traveled per day (≈227 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.3%).
Local congestion 78% below the Idaho average
Compared to highways, non-highway routes see 67% fewer trucks by share.
At 78% lower than the state level, the non-highway congestion ratio of 3.6% signals easier movement on local roads.
56% of counties in Idaho see higher average driver income among trip origins than Elmore. Elmore's median driver age is lower than 84% of counties in Idaho.