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Custer County, Idaho Traffic Counts

This page delivers traffic analytics for Custer County, Idaho. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Custer County, Idaho among 122 road miles divided in 759 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 852 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

Traffic

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

1,141

Trucks

Trucks

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

10.7%

Average travel time

Average travel time

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

31.3 min

Drivers’ average age

Drivers’ average age

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

59.7 yrs

Drivers’ average income

Drivers’ average income

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

$52,883

Our data indicates an estimated average traffic volume of 1,141 vehicles per day in Custer County, Idaho that results in 92,311 vehicle-miles traveled per day (≈33.7 million per year). The traffic stream is comprised of an average of 1 truck for every 9 vehicles. Typical time spent behind the wheel per trip is 31.3 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Idaho state averages: Custer sees 80% lower average daily traffic volume than the state average (1,141 vehicles per day against 5,734), suggesting less demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries 92,311 vehicle-miles traveled per day (≈33.7 million per year), about 0.2% of Idaho's statewide total. The average trip takes 31.3 minutes, 8% lower than the state level. 7% of counties in Idaho see less traffic than Custer's 1,141 vehicles per day. Its average travel time of 31.3 minutes is longer than 35% of counties in Idaho.

Highway vs. Non-Highway Traffic Analysis

Analytical insight

N/A
non-highway traffic icon

Non-highway traffic

Traffic

Traffic

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

1,141

Trucks

Trucks

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

10.7%

Average travel time

Average travel time

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

31.3 min

Drivers’ average age

Drivers’ average age

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

59.7 yrs

Drivers’ average income

Drivers’ average income

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

$52,883

The non-highway road network in Custer County, Idaho supports a substantial volume of traffic. The average non-highway road carries 1,141 vehicles per day. That average covers 122 non-highway road miles divided in 759 segments (average segment length 852 ft), together carrying 92,311 vehicle-miles traveled per day (≈33.7 million per year). Trucks constitute 10.7% of non-highway traffic.

Analytical insight

35% of counties in Idaho see shorter overall travel times than Custer. 5% of counties in Idaho see lower average driver income among trip origins than Custer. Drivers here also skew toward the highest median age in Idaho, at 60 years.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 84% higher than the daily average.
Weekend traffic:
Weekend volumes run about 4% below weekday levels.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +63% versus the annual average.
Lowest month:
January is the quietest month, with volumes -53% versus the annual average.

Analytical insight

In Custer County, Idaho, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +63% in high season.

Traffic Flow Profile Comparison

Metric

Custer

Idaho
Average

Difference

Traffic

1,141

5,734

-80.1%

Truck % (Total Traffic)

10.7%

9.7%

+10.4%

Truck % (Highway)

14.1%

Avg. Travel Time

31.3 min

33.8 min

-7.6%

How Custer County compares

Custer County against nearby areas

Against the 4 nearest areas, Custer County carries 55.8% less traffic on a typical road and moves 36.2% of the total daily travel; it has the fourth busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Custer 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
Custer County1,14110.7%92,31131.3 minN/A
Lemhi County, Idaho2,4319.1%127,81329.5 minN/A
Camas County, Idaho1,0959.6%64,34252.6 minN/A
Blaine County, Idaho4,7147.2%572,28529.9 minN/A
Butte County, Idaho2,09011.2%255,69840.9 minN/A
Idaho average5,7349.7%N/A33.8 min16.0%

Custer County ranked within Idaho

Custer County posts the highest average driver age of any county-level area in Idaho.

Where Custer County sits among Idaho's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
MeasureCuster CountyIdaho rank
Traffic volume (AADT)1,141#41 of 44
Average travel time31.3 min#29 of 44
Average driver income$52,883#42 of 44
Average driver age59.7 yrs#1 of 44

Custer County ranks #1 of 44 on average driver age but #42 of 44 on average driver income. The driver population here skews older and lower-income than most of Idaho.

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

Historical traffic pattern databases

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

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Counties near Custer County

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

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