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Traffic heat map of Flathead County, Montana: 545 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US Route 2 and US 93

Flathead County, Montana Traffic Counts

Our Flathead County, Montana traffic data covers 7,177 road segments over 545 road miles, with an average segment of just 401 ft. Its highways carry the lowest truck share of any county in Montana, 7.4%. 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 Flathead County, Montana

Traffic

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

vehicles per day6,432
Trucks

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

6.3%
Average travel time

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

35.8 min
Congestion ratio

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

16.4%
Drivers’ average age

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

48.5 yrs
Drivers’ average income

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

$74,029

Our data shows 6,432 vehicles per day on the average road in Flathead County, Montana, and 2,417,955 vehicle-miles traveled per day (≈883 million per year) across its 545 miles of monitored roads. Traffic here is mostly passenger cars: only 6.3% trucks, against 11.7% across Montana.

Busier roads than 96% of counties in Montana

Flathead sees 53% higher average daily traffic volume than the state average (6,432 vehicles per day against 4,202), suggesting more demand on each road - heavy exposure for roadside retail, and tight road space for deliveries. In total volume terms, its road network carries about 8.5% of Montana's statewide total of vehicle-miles. By volume, Flathead's 6,432 vehicles per day outpaces 96% of counties in Montana.

The average trip takes 35.8 minutes, on par with the state level. Its average travel time of 35.8 minutes is shorter than 75% of counties in Montana.

The congestion ratio of 16.4% is 34% higher, pointing to more pronounced congestion than the state level - a factor for delivery windows and signal timing.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Flathead County, Montana

Trafficvehicles per day9,697
Trucks7.4%
Average travel time30.4 min
Congestion ratio23.6%
Drivers’ average age48.9 yrs
Drivers’ average income$74,992

A significant share of driving in Flathead County, Montana, 42% of vehicle-miles, happens on highways. The average highway carries 9,697 vehicles per day, 72% more than the average non-highway road in the same area, which carries 5,624 vehicles per day.

Highways make up 26% of the monitored road miles (139 miles, 1,424 segments), so they carry more than their share: 1,015,937 vehicle-miles traveled per day (≈371 million per year).

That puts Flathead among the top 5 counties in Montana for highway travel volume.

The lowest highway truck share of any county in Montana

At 7.4%, highway truck share is 50% lower than the state average. Highways here carry mainly commuter and local trips, with little through freight.

Flathead also posts the lowest highway truck share in Montana - 7.4%. By raw truck volume, Flathead carries more highway trucks than 67% of counties in Montana.

non-highway traffic icon

Non-highway Traffic in Flathead County, Montana

Trafficvehicles per day5,624
Trucks5.4%
Average travel time37.1 min
Congestion ratio14.6%
Drivers’ average age48.3 yrs
Drivers’ average income$73,510

Local roads carry more than half of all travel in Flathead County, Montana (58% of vehicle-miles). The average non-highway road carries 5,624 vehicles per day.

Spread over 406 miles and 5,753 segments, 74% of the road network, local roads carry a lighter load per mile: 1,402,018 vehicle-miles traveled per day (≈512 million per year). The truck share on non-highway roads is 5.4%.

Drivers from higher-income areas than 82% of counties in Montana

Compared to highways, non-highway routes see 27% fewer trucks by share.

Non-highway congestion (14.6%) runs 20% higher than the state average, pointing to slower local traffic flow.

82% of counties in Montana see lower average driver income among trip origins than Flathead. 69% of counties in Montana have an older driver population than Flathead.

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 3:00 PM–6:00 PM, with volumes reaching approximately 88% 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 +44% versus the annual average.
Lowest month:
January is the quietest month, with volumes -31% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Flathead County, Montana, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +44% in high season.

Flathead County vs. Montana Traffic Comparison

Flathead County's biggest difference from the Montana average is its average daily traffic per road, 53% above it. Its highway truck share, by contrast, is 50% below.

MetricFlathead CountyMontana averageDifference
Traffic6,4324,202+53.1%
Truck % (Total Traffic)6.3%11.7%-46.4%
Truck % (Highway)7.4%15.0%-50.3%
Avg. Travel Time35.8 min36.2 min-1.1%

How Flathead County compares

Flathead County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Flathead County moves 5.9 times the total daily travel and is 113.8% more congested; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Flathead 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
Flathead County6,4326.3%2,417,95535.8 min16.4%
Lake County, Montana4,3079.1%875,23739.6 min10.6%
Glacier County, Montana1,77010.4%230,70756.0 min6.9%
Lincoln County, Montana2,6829.0%221,56730.0 min7.2%
Sanders County, Montana1,9199.6%320,95338.0 min5.9%
Montana average4,20211.7%N/A36.2 min12.3%

Flathead County ranked within Montana

On average daily traffic volume, Flathead County is among the three highest county-level areas in Montana.

Flathead County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasureFlathead CountyMontana rank
Traffic volume (AADT)6,432#3 of 56
Highway vehicle-miles per day1,015,937#4 of 47
Truck share on highways7.4%#47 of 47
Highway trucks per day721#16 of 47
Average travel time35.8 min#42 of 56
Average driver income$74,029#11 of 56
Average driver age48.5 yrs#39 of 56

Flathead County ranks #4 of 47 on highway travel volume but #47 of 47 on truck share on highways. It carries some of the heaviest highway traffic in Montana, but very little of it is freight - this is commuter and local car volume, not through-trucking.

Busiest roads in Flathead County, Montana

On their busiest stretches, the three busiest roads in Flathead County carry 29,324 vehicles a day on average, 4.6 times the typical road in the county (6,432).

US Route 2 is the busiest road, at 34,660 vehicles a day, 1,529 of them trucks (4.4%). It also carries the most trucks.

US 93 is busy with cars rather than freight: only 2.6% of its traffic is trucks, against 6.3% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US Route 2Primary road · 34,660vehicles1,529trucks · 4.4%
Road class
Primary road
Congestion ratio
38.0%
Median trip time
39.3 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$70,367

US Route 2 is one of the more congested roads here: trips take 38% longer than at free-flow speed, against 16% county-wide.

2US 93Primary road · 27,310vehicles703trucks · 2.6%
Road class
Primary road
Congestion ratio
35.3%
Median trip time
36.3 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$73,192

US 93 carries 4.2 times the county average on its busiest stretch, where the median trip lasts 36.3 minutes.

3US 2Trunk road · 26,002vehicles1,339trucks · 5.2%
Road class
Trunk road
Congestion ratio
36.8%
Median trip time
25.5 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$75,381

Trips on US 2 are short, a median 25.5 minutes against 35.8 county-wide, so it mostly serves local errands and commutes.

4Idaho StreetPrimary road · 23,903vehicles1,149trucks · 4.8%
Road class
Primary road
Congestion ratio
48.2%
Median trip time
37.8 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$67,835

Delays build on Idaho Street: its congestion ratio of 48% over free-flow time is well above the county's 16%.

5Main StreetPrimary road · 23,766vehicles1,159trucks · 4.9%
Road class
Primary road
Congestion ratio
25.1%
Median trip time
39.0 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$65,106

At 3.7 times the county average, Main Street draws drivers from neighborhoods averaging $65,106 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US Route 2Primary road · #1 by traffic34,660vehicles1,529trucks · 4.4%
2US 2Trunk road · #3 by traffic26,002vehicles1,339trucks · 5.2%
39th StreetTrunk road · 22,191vehicles1,332trucks · 6.0%
Road class
Trunk road
Congestion ratio
26.7%
Median trip time
28.2 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$73,337

The busiest stretch of 9th Street carries 3.4 times the county average; trucks are 6.0% of it, in line with the county-wide 6.3%.

4Spokane AvenueTrunk road · 15,777vehicles1,178trucks · 7.5%
Road class
Trunk road
Congestion ratio
34.6%
Median trip time
26.5 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$82,053

Spokane Avenue is a local road at heart: the median trip using it lasts 26.5 minutes, against 35.8 for the county.

5Main StreetPrimary road · #5 by traffic23,766vehicles1,159trucks · 4.9%
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

FlatheadDepartment 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 Flathead County

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

Need segment-level traffic data?

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