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Traffic heat map of Idaho County, Idaho: 207 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and Pine Street

Idaho County, Idaho Traffic Counts

Its busiest road, Main Street, carries 7,002 vehicles a day, 3.8 times the average road. This page breaks down traffic in Idaho County, Idaho across 207 miles of monitored roads split into 1,979 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Idaho County, Idaho

Traffic

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

vehicles per day1,857
Trucks

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

10.6%
Average travel time

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

30.4 min
Drivers’ average age

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

55.6 yrs
Drivers’ average income

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

$63,015

The average monitored road in Idaho County, Idaho carries 1,857 vehicles per day. Across its 207 miles of monitored roads, that adds up to 303,819 vehicle-miles traveled per day (≈111 million per year). About 1 in 9 vehicles is a truck, in line with Idaho (9.7%).

Quieter roads than 88% of counties in Idaho

Idaho sees 68% lower average daily traffic volume than the state average (1,857 vehicles per day against 5,734), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.7% of Idaho's statewide total of vehicle-miles. 88% of counties in Idaho see more traffic than Idaho's 1,857 vehicles per day.

At 30.4 minutes, the average travel time is 10% lower than the state level. Its average travel time of 30.4 minutes is shorter than 72% of counties in Idaho.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Idaho County, Idaho

Trafficvehicles per day2,714
Trucks10.9%
Average travel time32.3 min
Drivers’ average age55.8 yrs
Drivers’ average income$61,789

Most travel in Idaho County, Idaho happens on highways, 79% of all vehicle-miles. The average highway carries 2,714 vehicles per day, 221% more than the average non-highway road in the same area, which carries 846 vehicles per day.

Highways make up 56% of the monitored road miles (115 miles, 1,071 segments), so they carry more than their share: 239,900 vehicle-miles traveled per day (≈87.6 million per year).

The fewest highway trucks of any county in Idaho

At 10.9%, highway truck share is 23% 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 outrank 53% of counties in Idaho. Idaho also moves the lowest raw count of highway trucks in Idaho, at roughly 227 per day.

non-highway traffic icon

Non-highway Traffic in Idaho County, Idaho

Trafficvehicles per day846
Trucks9.3%
Average travel time28.1 min
Drivers’ average age54.4 yrs
Drivers’ average income$66,643

Local roads carry a smaller share of travel in Idaho County, Idaho, 21% of vehicle-miles; most driving happens on highways. On the average non-highway road, that comes to 846 vehicles per day.

Spread over 91 miles and 908 segments, 44% of the road network, local roads carry a lighter load per mile: 63,919 vehicle-miles traveled per day (≈23.3 million per year). The truck share on non-highway roads is 9.3%.

Older drivers than 88% of counties in Idaho

Non-highway roads carry a truck concentration that's 14% lower than the highway network.

Trip origins here have lower average income than 77% of counties in Idaho. Idaho's median driver age is higher than 88% of counties in Idaho.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and PM peak 2:00 PM–5:00 PM, with volumes reaching approximately 88% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (+2%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +36% versus the annual average.
Lowest month:
December is the quietest month, with volumes -38% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Idaho County, Idaho, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +36% in high season.

Idaho County vs. Idaho Traffic Comparison

Of the four measures, average daily traffic per road differs most: Idaho County runs 68% below the Idaho average. Its highway truck share is also 23% below.

MetricIdaho CountyIdaho averageDifference
Traffic1,8575,734-67.6%
Truck % (Total Traffic)10.6%9.7%+9.4%
Truck % (Highway)10.9%14.1%-22.7%
Avg. Travel Time30.4 min33.8 min-10.3%

How Idaho County compares

Idaho County against nearby counties

Against the 4 nearest areas, Idaho County carries 56.9% less traffic on a typical road; it has the quietest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Idaho 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
Idaho County1,85710.6%303,81930.4 minN/A
Lewis County, Idaho1,91610.2%116,10127.0 minN/A
Clearwater County, Idaho2,54910.1%139,07726.2 minN/A
Nez Perce County, Idaho8,0986.4%1,053,61432.9 minN/A
Ravalli County, Montana4,6856.2%709,40431.9 min10.1%
Idaho average5,7349.7%N/A33.8 min16.0%

Idaho County ranked within Idaho

Idaho County records the lowest highway truck volume in Idaho.

Idaho County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureIdaho CountyIdaho rank
Traffic volume (AADT)1,857#39 of 44
Highway vehicle-miles per day239,900#23 of 35
Truck share on highways10.9%#17 of 35
Highway trucks per day296#35 of 35
Average travel time30.4 min#32 of 44
Average driver income$63,015#34 of 44
Average driver age55.6 yrs#6 of 44

The two ends of this table sit far apart: #6 of 44 on average driver age, against #35 of 35 on highway truck volume.

Busiest roads in Idaho County, Idaho

Traffic concentrates on a few corridors: the three busiest roads average 4,570 vehicles a day, against 1,857 on the average road in Idaho County.

Main Street is the busiest road, at 7,002 vehicles a day, 670 of them trucks (9.6%). No other road comes close: Pine Street, in second place, carries 3,944. It also carries the most trucks.

Drivers on Broadway Avenue come from neighborhoods with an average household income of $44,231, 30% below the county average of $63,015.

Trips on US 12 are short, a median of 21.2 minutes against 30.4 county-wide, so it serves mostly local traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetTrunk road · 7,002vehicles670trucks · 9.6%
Road class
Trunk road
Median trip time
32.9 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$74,658

On its busiest stretch, Main Street carries 3.8 times the county average; trucks are 9.6% of it, below the county-wide 10.6%.

2Pine StreetSecondary road · 3,944vehicles230trucks · 5.8%
Road class
Secondary road
Median trip time
26.3 min
Drivers’ median age
57.4 yrs
Drivers’ average income
$44,919

Pine Street peaks at 3,944 vehicles a day, 2.1 times the county average; trucks are 5.8% of it, below the county-wide 10.6%.

3US 12Trunk road · 2,763vehicles273trucks · 9.9%
Road class
Trunk road
Median trip time
21.2 min
Drivers’ median age
59.5 yrs
Drivers’ average income
$49,079

US 12 carries 49% more than the county average on its busiest stretch, where the median trip lasts 21.2 minutes.

4Broadway AvenueTrunk road · 2,678vehicles245trucks · 9.1%
Road class
Trunk road
Median trip time
33.3 min
Drivers’ median age
59.3 yrs
Drivers’ average income
$44,231

At 44% more than the county average, Broadway Avenue draws drivers from neighborhoods averaging $44,231 in household income.

5ID 13Secondary road · 2,666vehicles173trucks · 6.5%
Road class
Secondary road
Median trip time
27.5 min
Drivers’ median age
59.3 yrs
Drivers’ average income
$48,981

ID 13 is busy by local standards, at 44% more than the county average on its busiest stretch; trucks are 6.5% of it, below the county-wide 10.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetTrunk road · #1 by traffic7,002vehicles670trucks · 9.6%
2US 12Trunk road · #3 by traffic2,763vehicles273trucks · 9.9%
3US 95Trunk road · 2,307vehicles253trucks · 11.0%
Road class
Trunk road
Median trip time
31.1 min
Drivers’ median age
53.0 yrs
Drivers’ average income
$73,484

US 95 peaks at 2,307 vehicles a day, 24% more than the county average; trucks are 11.0% of it, in line with the county-wide 10.6%.

4Broadway AvenueTrunk road · #4 by traffic2,678vehicles245trucks · 9.1%
5Pine StreetSecondary road · #2 by traffic3,944vehicles230trucks · 5.8%
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

IdahoDepartment 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 Idaho County

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

Need segment-level traffic data?

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