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Traffic heat map of Teton County, Montana: 215 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 15 and Main Avenue

Teton County, Montana Traffic Counts

Our Teton County, Montana traffic data covers 798 road segments over 215 road miles, with an average segment of just 1,424 ft. Its busiest road, I 15, carries 2,673 vehicles a day, 3.1 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 Teton County, Montana

Traffic

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

vehicles per day850
Trucks

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

10.9%
Average travel time

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

33.3 min
Congestion ratio

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

4.8%
Drivers’ average age

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

52.7 yrs
Drivers’ average income

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

$70,607

A typical monitored road in Teton County, Montana sees 850 vehicles per day, while its 215 miles of monitored roads together handle 172,243 vehicle-miles traveled per day (≈62.9 million per year). About 1 in 9 vehicles is a truck, in line with Montana (11.7%).

Quieter roads than 91% of counties in Montana

At 850 vehicles per day, the average monitored road in Teton carries 80% less traffic than the state average of 4,202, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.6% of Montana's statewide total of vehicle-miles. 91% of counties in Montana see more traffic than Teton's 850 vehicles per day.

Journey times run 8% lower than the state level, at 33.3 minutes on average. 87% of counties in Montana have a longer average travel time than Teton's 33.3 minutes.

The congestion ratio of 4.8% is 61% lower, pointing to smoother traffic flow than the state level - free-flowing roads make scheduled deliveries highly predictable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Teton County, Montana

Trafficvehicles per day1,230
Trucks13.2%
Average travel time47.7 min
Congestion ratio2.3%
Drivers’ average age53.5 yrs
Drivers’ average income$71,466

Highways carry about half of all travel in Teton County, Montana, 48% of vehicle-miles. The average highway carries 1,230 vehicles per day, 48% more than the average non-highway road in the same area, which carries 828 vehicles per day.

Highways make up 26% of the monitored road miles (57 miles, 44 segments), so they carry more than their share: 83,036 vehicle-miles traveled per day (≈30.3 million per year).

Fewer highway trucks than 91% of counties in Montana

Highway truck concentration here runs 12% lower than the state average, at 13.2%. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.

Teton's highway truck share (13.2%) is lower than 63% of counties in Montana. By raw truck volume, Teton carries fewer highway trucks than 91% of counties in Montana.

non-highway traffic icon

Non-highway Traffic in Teton County, Montana

Trafficvehicles per day828
Trucks8.8%
Average travel time32.5 min
Congestion ratio5.0%
Drivers’ average age52.5 yrs
Drivers’ average income$70,286

Local roads carry about half of all travel in Teton County, Montana, 52% of vehicle-miles. On the average non-highway road, that comes to 828 vehicles per day.

Spread over 158 miles and 754 segments, 74% of the road network, local roads carry a lighter load per mile: 89,207 vehicle-miles traveled per day (≈32.6 million per year). About 1 in 11 vehicles on non-highway roads is a truck (8.8%).

Local congestion 59% below the Montana average

Compared to highways, non-highway routes see 33% fewer trucks by share.

At 59% lower than the state level, the non-highway congestion ratio of 5.0% signals easier movement on local roads.

Trip origins here have higher average income than 65% of counties in Montana. 60% of counties in Montana have a younger driver population than Teton.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Teton County, Montana, the peak hour concentrates about 7% of the day's traffic.

Teton County vs. Montana Traffic Comparison

Of the four measures, average daily traffic per road differs most: Teton County runs 80% below the Montana average.

MetricTeton CountyMontana averageDifference
Traffic8504,202-79.8%
Truck % (Total Traffic)10.9%11.7%-6.4%
Truck % (Highway)13.2%15.0%-11.9%
Avg. Travel Time33.3 min36.2 min-7.9%

How Teton County compares

Teton County against nearby counties

Set against the average of the 4 areas nearest to it, Teton County carries 72.5% less traffic on a typical road and moves 19.9% of the total daily travel; it has the quietest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Teton County and the 4 nearest county-level areas by centroid distance, with the Montana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Teton County85010.9%172,24333.3 min4.8%
Pondera County, Montana85312.6%180,36640.3 min3.5%
Lewis and Clark County, Montana4,9428.1%1,349,80044.2 min15.0%
Cascade County, Montana4,2668.0%1,339,08735.6 min13.9%
Powell County, Montana2,32720.1%584,98442.1 min6.7%
Montana average4,20211.7%N/A36.2 min12.3%

Teton County ranked within Montana

Highway truck volume places Teton County #43 of 47 in Montana - the bottom quarter of the state.

Teton County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureTeton CountyMontana rank
Traffic volume (AADT)850#51 of 56
Highway vehicle-miles per day83,036#40 of 47
Truck share on highways13.2%#30 of 47
Highway trucks per day162#43 of 47
Average travel time33.3 min#49 of 56
Average driver income$70,607#20 of 56
Average driver age52.7 yrs#23 of 56

Busiest roads in Teton County, Montana

Traffic concentrates on a few corridors: the three busiest roads average 2,505 vehicles a day, against 850 on the average road in Teton County.

I 15 is the busiest road, at 2,673 vehicles a day, 357 of them trucks (13.3%). It also carries the most trucks.

Trips using I 15 are long: a median of 47.8 minutes against 33.3 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 15Motorway · 2,673vehicles357trucks · 13.3%
Road class
Motorway
Congestion ratio
3.1%
Median trip time
47.8 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$71,466

The busiest stretch of I 15 carries 3.1 times the county average; trucks are 13.3% of it, above the county-wide 10.9%.

2Main AvenuePrimary road · 2,462vehicles199trucks · 8.1%
Road class
Primary road
Congestion ratio
8.8%
Median trip time
34.3 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$61,985

On its busiest stretch, Main Avenue carries 2.9 times the county average; trucks are 8.1% of it, below the county-wide 10.9%.

31st Street NortheastSecondary road · 2,379vehicles132trucks · 5.5%
Road class
Secondary road
Congestion ratio
5.3%
Median trip time
29.6 min
Drivers’ median age
55.7 yrs
Drivers’ average income
$67,174

1st Street Northeast peaks at 2,379 vehicles a day, 2.8 times the county average; trucks are 5.5% of it, below the county-wide 10.9%.

41st Road SoutheastPrimary road · 1,997vehicles136trucks · 6.8%
Road class
Primary road
Congestion ratio
4.6%
Median trip time
28.2 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$69,854

1st Road Southeast carries 2.3 times the county average at its busiest, 136 of them trucks (6.8%, below the county-wide 10.9%).

5Park WayPrimary road · 1,477vehicles122trucks · 8.3%
Road class
Primary road
Congestion ratio
4.3%
Median trip time
31.0 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$70,036

At 74% more than the county average, Park Way draws drivers from neighborhoods averaging $70,036 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 15Motorway · #1 by traffic2,673vehicles357trucks · 13.3%
2Main AvenuePrimary road · #2 by traffic2,462vehicles199trucks · 8.1%
31st Road SoutheastPrimary road · #4 by traffic1,997vehicles136trucks · 6.8%
41st Street NortheastSecondary road · #3 by traffic2,379vehicles132trucks · 5.5%
5Park WayPrimary road · #5 by traffic1,477vehicles122trucks · 8.3%
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

TetonDepartment 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 Teton County

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

Need segment-level traffic data?

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