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Traffic heat map of Bonneville County, Idaho: 500 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 20 and Sunnyside Road

Bonneville County, Idaho Traffic Counts

Traffic analytics for Bonneville County, Idaho, calculated from real-world mobile and sensor networks on 8,083 road segments (500 road miles, about 327 ft each). It ranks among the top 3 counties in Idaho for average daily traffic. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Bonneville County, Idaho

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day7,793
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

6.6%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

35.2 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

20.6%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

41.8 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$81,482

The average monitored road in Bonneville County, Idaho carries 7,793 vehicles per day. Across its 500 miles of monitored roads, that adds up to 2,674,554 vehicle-miles traveled per day (≈976 million per year). About 1 in 15 vehicles is a truck, fewer than the 1 in 10 across Idaho.

Busier roads than 95% of counties in Idaho

Bonneville's average daily traffic volume is 36% higher than the state average - 7,793 vehicles per day against 5,734 - suggesting more traffic load per road - a busier backdrop for retail sites, at the cost of slower access. Across the whole network, that travel is about 5.9% of Idaho's statewide total. Bonneville carries more traffic than 95% of counties in Idaho.

At 35.2 minutes, the average travel time matches the state level closely. 60% of counties in Idaho have a shorter average travel time than Bonneville's 35.2 minutes.

The congestion ratio of 20.6% is 29% higher, pointing to more pronounced congestion than the state level - a factor for delivery windows and signal timing.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Bonneville County, Idaho

Trafficvehicles per day9,048
Trucks9.3%
Average travel time40.0 min
Congestion ratio30.2%
Drivers’ average age41.2 yrs
Drivers’ average income$77,451

Highways carry a significant share of travel in Bonneville County, Idaho: 41% of all vehicle-miles. The average highway carries 9,048 vehicles per day, 19% more than the average non-highway road in the same area, which carries 7,615 vehicles per day.

With 27% of the road miles (137 miles in 1,006 segments), highways punch above their length, carrying 1,096,329 vehicle-miles traveled per day (≈400 million per year).

By highway travel volume, Bonneville outranks 82% of counties in Idaho.

Lower highway truck share than 79% of counties in Idaho

The concentration of trucks on highways (9.3%) is 34% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Bonneville's highway truck share (9.3%) is lower than 79% of counties in Idaho. Bonneville's highway truck count is higher than 53% of counties in Idaho, at roughly 841 trucks per day.

non-highway traffic icon

Non-highway Traffic in Bonneville County, Idaho

Trafficvehicles per day7,615
Trucks4.7%
Average travel time34.5 min
Congestion ratio19.3%
Drivers’ average age41.9 yrs
Drivers’ average income$83,343

A little more than half of the driving in Bonneville County, Idaho happens on local roads: 59% of all vehicle-miles. A typical local road sees 7,615 vehicles per day.

Local roads also make up about 73% of the monitored road miles: 363 miles in 7,077 segments, together carrying 1,578,225 vehicle-miles traveled per day (≈576 million per year). The truck share on non-highway roads is 4.7%.

Drivers from higher-income areas than 91% of counties in Idaho

Compared to highways, non-highway routes see 49% fewer trucks by share.

At 18% higher than the state level, the non-highway congestion ratio of 19.3% signals more friction on local roads.

91% of counties in Idaho see lower average driver income among trip origins than Bonneville. Bonneville's median driver age is lower than 88% of counties in Idaho.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 8:00 AM to 12:00 PM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 89% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 25% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +22% versus the annual average.
Lowest month:
January is the quietest month, with volumes -25% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Bonneville County, Idaho, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +22% in high season.

Bonneville County vs. Idaho Traffic Comparison

Of the four measures, average daily traffic per road differs most: Bonneville County runs 36% above the Idaho average. Its highway truck share, by contrast, is 34% below.

MetricBonneville CountyIdaho averageDifference
Traffic7,7935,734+35.9%
Truck % (Total Traffic)6.6%9.7%-31.8%
Truck % (Highway)9.3%14.1%-34.0%
Avg. Travel Time35.2 min33.8 min+4.0%

How Bonneville County compares

Bonneville County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Bonneville County moves 3.9 times the total daily travel and carries 88.3% more traffic on a typical road; it has the busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Bonneville County and the 4 nearest county-level areas by centroid distance, with the Idaho average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Bonneville County7,7936.6%2,674,55435.2 min20.6%
Teton County, Idaho6,2517.5%284,68140.5 min26.3%
Madison County, Idaho4,3526.9%822,40333.5 min7.1%
Caribou County, Idaho2,03512.1%212,14333.2 minN/A
Bingham County, Idaho3,92211.4%1,405,42932.2 min12.2%
Idaho average5,7349.7%N/A33.8 min16.0%

Bonneville County ranked within Idaho

On average daily traffic volume, Bonneville County is among the three highest county-level areas in Idaho.

Bonneville County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureBonneville CountyIdaho rank
Traffic volume (AADT)7,793#3 of 44
Highway vehicle-miles per day1,096,329#7 of 35
Truck share on highways9.3%#28 of 35
Highway trucks per day841#17 of 35
Average travel time35.2 min#18 of 44
Average driver income$81,482#5 of 44
Average driver age41.8 yrs#39 of 44

The two ends of this table sit far apart: #3 of 44 on average daily traffic volume, against #39 of 44 on average driver age.

Busiest roads in Bonneville County, Idaho

On their busiest stretches, the three busiest roads in Bonneville County carry 31,212 vehicles a day on average, 4.0 times the typical road in the county (7,793).

US 20 is the busiest road, at 32,552 vehicles a day, 2,733 of them trucks (8.4%). I 15 carries the most trucks, 2,775 a day (10.8% of its traffic), although it is not among the 5 busiest roads overall.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 20Motorway · 32,552vehicles2,733trucks · 8.4%
Road class
Motorway
Congestion ratio
47.8%
Median trip time
37.0 min
Drivers’ median age
40.5 yrs
Drivers’ average income
$77,347

US 20 is one of the more congested roads here: trips take 48% longer than at free-flow speed, against 21% county-wide.

2Sunnyside RoadSecondary road · 30,928vehicles1,257trucks · 4.1%
Road class
Secondary road
Congestion ratio
37.8%
Median trip time
29.5 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$85,856

Delays build on Sunnyside Road: its congestion ratio of 38% over free-flow time is well above the county's 21%.

3South 25th EastSecondary road · 30,156vehicles1,140trucks · 3.8%
Road class
Secondary road
Congestion ratio
35.6%
Median trip time
33.4 min
Drivers’ median age
39.5 yrs
Drivers’ average income
$80,575

South 25th East carries 3.9 times the county average on its busiest stretch, where the median trip lasts 33.4 minutes.

417th StreetSecondary road · 28,024vehicles950trucks · 3.4%
Road class
Secondary road
Congestion ratio
36.4%
Median trip time
36.0 min
Drivers’ median age
42.1 yrs
Drivers’ average income
$77,185

At 3.6 times the county average, 17th Street draws drivers from neighborhoods averaging $77,185 in household income.

5Rigby HighwayMotorway · 26,918vehicles2,210trucks · 8.2%
Road class
Motorway
Congestion ratio
33.0%
Median trip time
36.3 min
Drivers’ median age
39.0 yrs
Drivers’ average income
$76,683

The busiest stretch of Rigby Highway carries 3.5 times the county average; trucks are 8.2% of it, above the county-wide 6.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 15Motorway · 25,709vehicles2,775trucks · 10.8%
Road class
Motorway
Median trip time
37.0 min
Drivers’ median age
41.8 yrs
Drivers’ average income
$79,473

On its busiest stretch, I 15 carries 3.3 times the county average; trucks are 10.8% of it, above the county-wide 6.6%.

2US 20Motorway · #1 by traffic32,552vehicles2,733trucks · 8.4%
3Rigby HighwayMotorway · #5 by traffic26,918vehicles2,210trucks · 8.2%
4Sunnyside RoadSecondary road · #2 by traffic30,928vehicles1,257trucks · 4.1%
5South 25th EastSecondary road · #3 by traffic30,156vehicles1,140trucks · 3.8%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

BonnevilleDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Bonneville County

The same traffic breakdown for the areas closest to Bonneville County, Idaho.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.