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Traffic heat map of Madison County, Idaho: 165 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Yellowstone Highway and North 2nd East

Madison County, Idaho Traffic Counts

Our Madison County, Idaho traffic data covers 2,340 road segments over 165 road miles, with an average segment of just 372 ft. Its drivers are the youngest of any county in Idaho, a median 29 years. 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 icon

Total Traffic Volume & Performance in Madison County, Idaho

Traffic

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

vehicles per day4,352
Trucks

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

6.9%
Average travel time

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

33.5 min
Congestion ratio

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

7.1%
Drivers’ average age

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

28.6 yrs
Drivers’ average income

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

$70,564

The average monitored road in Madison County, Idaho carries 4,352 vehicles per day. Across its 165 miles of monitored roads, that adds up to 822,403 vehicle-miles traveled per day (≈300 million per year). About 1 in 14 vehicles is a truck, fewer than the 1 in 10 across Idaho.

Congestion 55% below the Idaho average

At 4,352 vehicles per day, the average monitored road in Madison carries 24% less traffic than the state average of 5,734, suggesting less demand on each road - a factor worth weighing in site selection and logistics planning. Network-wide, Madison accounts for about 1.8% of Idaho's statewide total of vehicle-miles. 74% of counties in Idaho see less traffic than Madison's 4,352 vehicles per day.

The average trip takes 33.5 minutes, on par with the state level. 51% of counties in Idaho have a shorter average travel time than Madison's 33.5 minutes.

Congestion runs 55% lower than the state level, at a ratio of 7.1%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Madison County, Idaho

Trafficvehicles per day11,236
Trucks8.4%
Average travel time37.0 min
Drivers’ average age34.9 yrs
Drivers’ average income$71,388

A significant share of driving in Madison County, Idaho, 44% of vehicle-miles, happens on highways. The average highway carries 11,236 vehicles per day, 170% more than the average non-highway road in the same area, which carries 4,155 vehicles per day.

Highways make up 19% of the monitored road miles (31 miles, 65 segments), so they carry more than their share: 363,259 vehicle-miles traveled per day (≈133 million per year).

Lower highway truck share than 94% of counties in Idaho

The concentration of trucks on highways (8.4%) is 40% lower than the state average for similar road classifications. Highways here carry mainly commuter and local trips, with little through freight.

94% of counties in Idaho see a higher highway truck share than Madison's 8.4%. By raw truck volume, Madison carries more highway trucks than 65% of counties in Idaho.

non-highway traffic icon

Non-highway Traffic in Madison County, Idaho

Trafficvehicles per day4,155
Trucks5.8%
Average travel time33.4 min
Congestion ratio7.1%
Drivers’ average age26.5 yrs
Drivers’ average income$69,852

Local roads carry more than half of all travel in Madison County, Idaho (56% of vehicle-miles). On the average non-highway road, that comes to 4,155 vehicles per day.

Local roads make up 81% of the monitored road miles (134 miles in 2,275 segments) but carry less than their share of travel: 459,144 vehicle-miles traveled per day (≈168 million per year). The truck share on non-highway roads is 5.8%.

The youngest drivers of any county in Idaho

The concentration of trucks on non-highway roads is 32% lower than on highways.

Non-highway congestion (7.1%) runs 56% lower than the state average, pointing to smoother local traffic flow.

Madison's average driver income is lower than 53% of counties in Idaho. Drivers here also skew toward the lowest median age in Idaho, at 29 years.

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 5:00 PM–6:00 PM, with volumes reaching approximately 101% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 23% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +24% versus the annual average.
Lowest month:
February is the quietest month, with volumes -24% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Madison County, Idaho, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +24% in high season.

Madison County vs. Idaho Traffic Comparison

The highway truck share sets Madison County apart: 40% below the Idaho average. Its truck share is also 28% below.

MetricMadison CountyIdaho averageDifference
Traffic4,3525,734-24.1%
Truck % (Total Traffic)6.9%9.7%-28.2%
Truck % (Highway)8.4%14.1%-40.1%
Avg. Travel Time33.5 min33.8 min-1.1%

How Madison County compares

Madison County is the least congested of its nearby counties

Nothing in this table sets Madison County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five.

Madison 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
Madison County4,3526.9%822,40333.5 min7.1%
Teton County, Idaho6,2517.5%284,68140.5 min26.3%
Jefferson County, Idaho2,8528.4%692,37029.4 min8.2%
Bonneville County, Idaho7,7936.6%2,674,55435.2 min20.6%
Fremont County, Idaho2,9768.2%620,28037.9 minN/A
Idaho average5,7349.7%N/A33.8 min16.0%

Madison County ranked within Idaho

No county-level area in Idaho records a lower average driver age than Madison County.

Madison County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureMadison CountyIdaho rank
Traffic volume (AADT)4,352#12 of 44
Highway vehicle-miles per day363,259#19 of 35
Truck share on highways8.4%#33 of 35
Highway trucks per day947#13 of 35
Average travel time33.5 min#22 of 44
Average driver income$70,564#24 of 44
Average driver age28.6 yrs#44 of 44

Madison County ranks #12 of 44 on average daily traffic volume but #44 of 44 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Madison County, Idaho

The three busiest roads in Madison County average 19,362 vehicles a day, 4.4 times the county average of 4,352 across all its monitored roads.

Yellowstone Highway leads with 23,892 vehicles a day, 2,049 of them trucks (8.6%). It tops the truck ranking too, with the most trucks.

Drivers on ID 33 are noticeably older, with a median age of 38.2 against 28.6 across the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Yellowstone HighwayMotorway · 23,892vehicles2,049trucks · 8.6%
Road class
Motorway
Median trip time
37.0 min
Drivers’ median age
35.0 yrs
Drivers’ average income
$71,424

Yellowstone Highway is a trunk route for the county, carrying 5.5 times the county average on its busiest stretch; trucks are 8.6% of it, above the county-wide 6.9%.

2North 2nd EastPrimary road · 19,183vehicles902trucks · 4.7%
Road class
Primary road
Median trip time
32.5 min
Drivers’ median age
29.1 yrs
Drivers’ average income
$65,831

North 2nd East carries 4.4 times the county average on its busiest stretch, where the median trip lasts 32.5 minutes.

3Main StreetPrimary road · 15,009vehicles763trucks · 5.1%
Road class
Primary road
Median trip time
32.8 min
Drivers’ median age
29.0 yrs
Drivers’ average income
$66,229

At 3.4 times the county average, Main Street draws drivers from neighborhoods averaging $66,229 in household income.

4South 2nd WestSecondary road · 14,236vehicles818trucks · 5.8%
Road class
Secondary road
Median trip time
34.9 min
Drivers’ median age
25.7 yrs
Drivers’ average income
$56,487

The busiest stretch of South 2nd West carries 3.3 times the county average; trucks are 5.8% of it, below the county-wide 6.9%.

5East 7th SouthSecondary road · 12,869vehicles451trucks · 3.5%
Road class
Secondary road
Median trip time
30.4 min
Drivers’ median age
25.1 yrs
Drivers’ average income
$64,929

On its busiest stretch, East 7th South carries 3.0 times the county average; trucks are 3.5% of it, below the county-wide 6.9%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Yellowstone HighwayMotorway · #1 by traffic23,892vehicles2,049trucks · 8.6%
2North 2nd EastPrimary road · #2 by traffic19,183vehicles902trucks · 4.7%
3South 2nd WestSecondary road · #4 by traffic14,236vehicles818trucks · 5.8%
4Main StreetPrimary road · #3 by traffic15,009vehicles763trucks · 5.1%
5ID 33Primary road · 7,659vehicles613trucks · 8.0%
Road class
Primary road
Median trip time
39.2 min
Drivers’ median age
38.2 yrs
Drivers’ average income
$74,260

ID 33 is busy by local standards, at 76% more than the county average on its busiest stretch; trucks are 8.0% of it, above the county-wide 6.9%.

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

MadisonDepartment 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 Madison County

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

Need segment-level traffic data?

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