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Traffic heat map of Boundary County, Idaho: 66 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and US 95

Boundary County, Idaho Traffic Counts

Our Boundary County, Idaho traffic data covers 1,058 road segments over 66 road miles, with an average segment of just 329 ft. Its busiest road, Main Street, carries 17,588 vehicles a day, 5.5 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Boundary County, Idaho

Traffic

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

vehicles per day3,176
Trucks

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

8.6%
Average travel time

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

30.3 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.

51.0 yrs
Drivers’ average income

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

$69,311

Our data shows 3,176 vehicles per day on the average road in Boundary County, Idaho, and 191,367 vehicle-miles traveled per day (≈69.8 million per year) across its 66 miles of monitored roads. Trucks are 8.6% of traffic, close to the 9.7% across Idaho.

Shorter trips than 74% of counties in Idaho

Boundary sees 45% lower average daily traffic volume than the state average (3,176 vehicles per day against 5,734), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 0.4% of Idaho's statewide total of vehicle-miles. 56% of counties in Idaho see less traffic than Boundary's 3,176 vehicles per day.

At 30.3 minutes, the average travel time is 10% lower than the state level. 74% of counties in Idaho have a longer average travel time than Boundary's 30.3 minutes.

The congestion ratio of 10.6% is 34% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Boundary County, Idaho

Trafficvehicles per day5,197
Trucks8.7%
Average travel time31.8 min
Congestion ratio10.6%
Drivers’ average age51.0 yrs
Drivers’ average income$68,532

Highways carry nearly all of the traffic in Boundary County, Idaho, 95% of all vehicle-miles. The average highway carries 5,197 vehicles per day, 1435% more than the average non-highway road in the same area, which carries 338 vehicles per day.

With 61% of the road miles (40 miles in 618 segments), highways punch above their length, carrying 182,022 vehicle-miles traveled per day (≈66.4 million per year).

Lower highway truck share than 88% of counties in Idaho

At 8.7%, highway truck share is 38% 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 88% of counties in Idaho. Boundary's highway truck count is lower than 74% of counties in Idaho, at roughly 454 trucks per day.

non-highway traffic icon

Non-highway Traffic in Boundary County, Idaho

Trafficvehicles per day338
Trucks6.1%
Average travel time28.2 min
Drivers’ average age47.3 yrs
Drivers’ average income$81,727

With 5% of vehicle-miles, local roads play a minor role in how Boundary County, Idaho travels. A typical local road sees 338 vehicles per day.

Local roads make up 39% of the monitored road miles (26 miles in 440 segments) but carry less than their share of travel: 9,345 vehicle-miles traveled per day (≈3.4 million per year). The truck share on non-highway roads is 6.1%.

Older drivers than 70% of counties in Idaho

The concentration of trucks on non-highway roads is 30% lower than on highways.

60% of counties in Idaho see higher average driver income among trip origins than Boundary. 70% of counties in Idaho have a younger driver population than Boundary.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and PM peak 3:00 PM–5:00 PM, with volumes reaching approximately 113% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 13% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +31% versus the annual average.
Lowest month:
December is the quietest month, with volumes -29% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Boundary County, Idaho, the peak hour concentrates about 9% of the day's traffic, and there is a strong seasonal swing of +31% in high season.

Boundary County vs. Idaho Traffic Comparison

The average daily traffic per road sets Boundary County apart: 45% below the Idaho average. Its highway truck share is also 38% below.

MetricBoundary CountyIdaho averageDifference
Traffic3,1765,734-44.6%
Truck % (Total Traffic)8.6%9.7%-11.0%
Truck % (Highway)8.7%14.1%-38.0%
Avg. Travel Time30.3 min33.8 min-10.4%

How Boundary County compares

Boundary County moves the least traffic of its nearby counties

Compared with its 4 closest neighbours, Boundary County moves 33.6% of the total daily travel; it has the second busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Boundary 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
Boundary County3,1768.6%191,36730.3 min10.6%
Bonner County, Idaho4,2707.3%1,027,08333.4 min10.3%
Pend Oreille County, Washington2,0267.8%300,15336.0 min7.7%
Lincoln County, Montana2,6829.0%221,56730.0 min7.2%
Stevens County, Washington2,2867.9%731,19532.0 min11.6%
Idaho average5,7349.7%N/A33.8 min16.0%

Boundary County ranked within Idaho

Truck share on highways places Boundary County #31 of 35 in Idaho - the bottom quarter of the state.

Boundary County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureBoundary CountyIdaho rank
Traffic volume (AADT)3,176#20 of 44
Highway vehicle-miles per day182,022#26 of 35
Truck share on highways8.7%#31 of 35
Highway trucks per day454#26 of 35
Average travel time30.3 min#33 of 44
Average driver income$69,311#27 of 44
Average driver age51.0 yrs#14 of 44

Busiest roads in Boundary County, Idaho

On their busiest stretches, the three busiest roads in Boundary County carry 11,615 vehicles a day on average, 3.7 times the typical road in the county (3,176).

Main Street leads with 17,588 vehicles a day, 1,066 of them trucks (6.1%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetTrunk road · 17,588vehicles1,066trucks · 6.1%
Road class
Trunk road
Median trip time
31.5 min
Drivers’ median age
51.0 yrs
Drivers’ average income
$62,767

At 5.5 times the county average, Main Street draws drivers from neighborhoods averaging $62,767 in household income.

2US 95Trunk road · 12,908vehicles1,059trucks · 8.2%
Road class
Trunk road
Median trip time
29.6 min
Drivers’ median age
51.4 yrs
Drivers’ average income
$66,824

At 4.1 times the county average, US 95 draws drivers from neighborhoods averaging $66,824 in household income.

3US 2Trunk road · 4,349vehicles425trucks · 9.8%
Road class
Trunk road
Median trip time
26.4 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$68,861

US 2 carries 37% more than the county average on its busiest stretch, where the median trip lasts 26.4 minutes.

4Moyie River BridgeTrunk road · 1,186vehicles135trucks · 11.4%
Road class
Trunk road
Median trip time
22.9 min
Drivers’ median age
56.2 yrs
Drivers’ average income
$75,086

Even at its busiest, Moyie River Bridge carries 63% less than the county average; trucks are 11.4% of it, above the county-wide 8.6%.

5Ash StreetTertiary road · 798vehicles45trucks · 5.7%
Road class
Tertiary road
Median trip time
29.3 min
Drivers’ median age
48.8 yrs
Drivers’ average income
$57,866

Ash Street is a quieter road: its busiest stretch carries 75% less than the county average; trucks are 5.7% of it, below the county-wide 8.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetTrunk road · #1 by traffic17,588vehicles1,066trucks · 6.1%
2US 95Trunk road · #2 by traffic12,908vehicles1,059trucks · 8.2%
3US 2Trunk road · #3 by traffic4,349vehicles425trucks · 9.8%
4Moyie River BridgeTrunk road · #4 by traffic1,186vehicles135trucks · 11.4%
5Ash StreetTertiary road · #5 by traffic798vehicles45trucks · 5.7%
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

BoundaryDepartment 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 Boundary County

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

Need segment-level traffic data?

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