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Traffic heat map of Phillips County, Montana: 109 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Central Avenue and 1st Street

Phillips County, Montana Traffic Counts

Traffic analytics for Phillips County, Montana, calculated from real-world mobile and sensor networks on 458 road segments (109 road miles, about 1,252 ft each). Trips here are among the 3 longest of any county in Montana. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Phillips County, Montana

Traffic

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

vehicles per day1,205
Trucks

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

14.5%
Average travel time

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

63.2 min
Congestion ratio

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

5.0%
Drivers’ average age

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

54.2 yrs
Drivers’ average income

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

$57,839

Our data shows 1,205 vehicles per day on the average road in Phillips County, Montana, and 93,820 vehicle-miles traveled per day (≈34.2 million per year) across its 109 miles of monitored roads. At 14.5%, the truck share runs above the 11.7% across Montana: about 1 in 7 vehicles.

Longer trips than 96% of counties in Montana

Phillips sees 71% lower average daily traffic volume than the state average (1,205 vehicles per day against 4,202), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.3% of Montana's statewide total. Phillips carries less traffic than 69% of counties in Montana.

The average trip takes 63.2 minutes, 75% higher than the state level. Its average travel time of 63.2 minutes is longer than 96% of counties in Montana.

The congestion ratio of 5.0% is 59% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Phillips County, Montana

Trafficvehicles per day1,380
Trucks14.3%
Average travel time52.7 min
Congestion ratio3.4%
Drivers’ average age54.0 yrs
Drivers’ average income$57,123

The vast majority of driving in Phillips County, Montana happens on highways: 84% of all vehicle-miles. The average highway carries 1,380 vehicles per day, 41% more than the average non-highway road in the same area, which carries 976 vehicles per day.

With 56% of the road miles (60 miles in 260 segments), highways punch above their length, carrying 78,563 vehicle-miles traveled per day (≈28.7 million per year).

Fewer highway trucks than 93% of counties in Montana

The concentration of trucks on highways (14.3%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.

Phillips's highway truck share (14.3%) is lower than 52% of counties in Montana. By raw truck volume, Phillips carries fewer highway trucks than 93% of counties in Montana.

non-highway traffic icon

Non-highway Traffic in Phillips County, Montana

Trafficvehicles per day976
Trucks15.4%
Average travel time77.0 min
Congestion ratio7.2%
Drivers’ average age54.4 yrs
Drivers’ average income$59,190

Local roads carry a smaller share of travel in Phillips County, Montana, 16% of vehicle-miles; most driving happens on highways. A typical local road sees 976 vehicles per day.

Spread over 48 miles and 198 segments, 44% of the road network, local roads carry a lighter load per mile: 15,257 vehicle-miles traveled per day (≈5.6 million per year). Trucks make up 15.4% of non-highway traffic, about 1 in 6 vehicles.

Drivers from lower-income areas than 84% of counties in Montana

Non-highway roads carry a truck concentration that's 8% higher than the highway network.

Non-highway congestion (7.2%) runs 41% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have lower average income than 84% of counties in Montana. Phillips's median driver age is higher than 75% of counties in Montana.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Phillips County vs. Montana Traffic Comparison

Phillips County's biggest difference from the Montana average is its average travel time, 75% above it. Its average daily traffic per road, by contrast, is 71% below.

MetricPhillips CountyMontana averageDifference
Traffic1,2054,202-71.3%
Truck % (Total Traffic)14.5%11.7%+24.3%
Truck % (Highway)14.3%15.0%-4.5%
Avg. Travel Time63.2 min36.2 min+74.6%

How Phillips County compares

Phillips County against nearby counties

Set against the average of the 4 areas nearest to it, Phillips County sees 36.3% longer typical trips; it has the second busiest roads of the five.

Phillips 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
Phillips County1,20514.5%93,82063.2 min5.0%
Blaine County, Montana1,17911.8%142,15536.5 min3.7%
Valley County, Montana1,85911.6%195,44431.6 min4.6%
Garfield County, Montana49115.7%43,72468.6 min4.6%
Petroleum County, Montana41611.3%28,30648.6 minN/A
Montana average4,20211.7%N/A36.2 min12.3%

Phillips County ranked within Montana

On average travel time, Phillips County is among the three highest county-level areas in Montana.

Phillips County ranked among 56 county-level areas in Montana (1 = highest); measures without data in every county rank a smaller field, down to 47.
MeasurePhillips CountyMontana rank
Traffic volume (AADT)1,205#39 of 56
Highway vehicle-miles per day78,563#42 of 47
Truck share on highways14.3%#25 of 47
Highway trucks per day198#44 of 47
Average travel time63.2 min#3 of 56
Average driver income$57,839#47 of 56
Average driver age54.2 yrs#15 of 56

The two ends of this table sit far apart: #3 of 56 on average travel time, against #44 of 47 on highway truck volume.

Busiest roads in Phillips County, Montana

Traffic concentrates on a few corridors: the three busiest roads average 2,665 vehicles a day, against 1,205 on the average road in Phillips County.

Central Avenue is the busiest road, at 4,129 vehicles a day, 214 of them trucks (5.2%). No other road comes close: 1st Street, in second place, carries 2,536. Old US 2 carries the most trucks, 280 a day (70.6% of its traffic), although it ranks #5 for all traffic.

Freight stands out on Old US 2: trucks are 70.6% of the traffic there, against 14.5% county-wide.

Central Avenue is busy with cars rather than freight: only 5.2% of its traffic is trucks, against 14.5% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Central AvenueSecondary road · 4,129vehicles214trucks · 5.2%
Road class
Secondary road
Congestion ratio
9.5%
Median trip time
77.4 min
Drivers’ median age
54.4 yrs
Drivers’ average income
$59,976

Central Avenue carries 3.4 times the county average at its busiest, 214 of them trucks (5.2%, below the county-wide 14.5%).

21st StreetTrunk road · 2,536vehicles254trucks · 10.0%
Road class
Trunk road
Congestion ratio
5.9%
Median trip time
66.4 min
Drivers’ median age
54.4 yrs
Drivers’ average income
$58,914

1st Street carries 2.1 times the county average on its busiest stretch, where the median trip lasts 66.4 minutes.

3US 2Trunk road · 1,329vehicles201trucks · 15.1%
Road class
Trunk road
Congestion ratio
3.1%
Median trip time
53.6 min
Drivers’ median age
54.2 yrs
Drivers’ average income
$56,766

US 2 peaks at 1,329 vehicles a day, 10% more than the county average; trucks are 15.1% of it, in line with the county-wide 14.5%.

4Taylor StreetTrunk road · 1,286vehicles172trucks · 13.3%
Road class
Trunk road
Congestion ratio
2.9%
Median trip time
61.3 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$59,183

Taylor Street carries 7% more than the county average at its busiest, 172 of them trucks (13.3%, below the county-wide 14.5%).

5Old US 2Tertiary road · 397vehicles280trucks · 70.6%
Road class
Tertiary road

Old US 2 is a quieter road: its busiest stretch carries 67% less than the county average; trucks are 70.6% of it, above the county-wide 14.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Old US 2Tertiary road · #5 by traffic397vehicles280trucks · 70.6%
21st StreetTrunk road · #2 by traffic2,536vehicles254trucks · 10.0%
3Central AvenueSecondary road · #1 by traffic4,129vehicles214trucks · 5.2%
4US 2Trunk road · #3 by traffic1,329vehicles201trucks · 15.1%
5Taylor StreetTrunk road · #4 by traffic1,286vehicles172trucks · 13.3%
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

PhillipsDepartment 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 Phillips County

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

Need segment-level traffic data?

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