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Traffic heat map of Latah County, Idaho: 185 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 3rd Street and Pullman Road

Latah County, Idaho Traffic Counts

Its busiest road, 3rd Street, carries 23,616 vehicles a day, 6.1 times the average road. This page breaks down traffic in Latah County, Idaho across 185 miles of monitored roads split into 2,415 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Latah County, Idaho

Traffic

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

vehicles per day3,841
Trucks

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

7.5%
Average travel time

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

30.0 min
Congestion ratio

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

17.3%
Drivers’ average age

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

31.3 yrs
Drivers’ average income

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

$65,570

The average monitored road in Latah County, Idaho carries 3,841 vehicles per day. Across its 185 miles of monitored roads, that adds up to 416,488 vehicle-miles traveled per day (≈152 million per year). About 1 in 13 vehicles is a truck, fewer than the 1 in 10 across Idaho.

Shorter trips than 79% of counties in Idaho

Latah's average daily traffic volume is 33% lower than the state average - 3,841 vehicles per day against 5,734 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Network-wide, Latah accounts for about 0.9% of Idaho's statewide total of vehicle-miles. 65% of counties in Idaho see less traffic than Latah's 3,841 vehicles per day.

Journey times run 11% lower than the state level, at 30.0 minutes on average. 79% of counties in Idaho have a longer average travel time than Latah's 30.0 minutes.

The congestion ratio of 17.3% runs slightly higher than the state level (8% higher).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Latah County, Idaho

Trafficvehicles per day6,058
Trucks9.1%
Average travel time40.1 min
Congestion ratio16.0%
Drivers’ average age34.8 yrs
Drivers’ average income$64,659

Highways carry about half of all travel in Latah County, Idaho, 50% of vehicle-miles. The average highway carries 6,058 vehicles per day, 82% more than the average non-highway road in the same area, which carries 3,328 vehicles per day.

With 27% of the road miles (51 miles in 454 segments), highways punch above their length, carrying 209,095 vehicle-miles traveled per day (≈76.3 million per year).

Lower highway truck share than 85% of counties in Idaho

Highway truck concentration here runs 35% lower than the state average, at 9.1%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 85% of counties in Idaho. 82% of counties in Idaho see more highway trucks per day than Latah's roughly 551.

non-highway traffic icon

Non-highway Traffic in Latah County, Idaho

Trafficvehicles per day3,328
Trucks6.0%
Average travel time27.7 min
Congestion ratio17.6%
Drivers’ average age29.9 yrs
Drivers’ average income$66,302

Local roads carry about half of all travel in Latah County, Idaho, 50% of vehicle-miles. On the average non-highway road, that comes to 3,328 vehicles per day.

Spread over 134 miles and 1,961 segments, 73% of the road network, local roads carry a lighter load per mile: 207,392 vehicle-miles traveled per day (≈75.7 million per year). About 1 in 17 vehicles on non-highway roads is a truck (6.0%).

Younger drivers than 98% of counties in Idaho

The concentration of trucks on non-highway roads is 34% lower than on highways.

Non-highway congestion (17.6%) runs slightly higher than the state level (7% higher).

Trip origins here have lower average income than 74% of counties in Idaho. The driver population here skews younger than 98% of counties in Idaho.

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–5:00 PM, with volumes reaching approximately 88% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 17% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +12% versus the annual average.
Lowest month:
December is the quietest month, with volumes -17% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Latah County, Idaho, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Latah County vs. Idaho Traffic Comparison

The highway truck share sets Latah County apart: 35% below the Idaho average. Its average daily traffic per road is also 33% below.

MetricLatah CountyIdaho averageDifference
Traffic3,8415,734-33.0%
Truck % (Total Traffic)7.5%9.7%-21.8%
Truck % (Highway)9.1%14.1%-35.4%
Avg. Travel Time30.0 min33.8 min-11.4%

How Latah County compares

Latah County against nearby counties

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

Latah 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
Latah County3,8417.5%416,48830.0 min17.3%
Benewah County, Idaho2,83511.4%175,95238.2 minN/A
Lewis County, Idaho1,91610.2%116,10127.0 minN/A
Nez Perce County, Idaho8,0986.4%1,053,61432.9 minN/A
Whitman County, Washington3,4249.2%837,13735.4 min11.1%
Idaho average5,7349.7%N/A33.8 min16.0%

Latah County ranked within Idaho

Latah County sits in the bottom quarter of the Idaho field on average driver age, at #43 of 44.

Latah County ranked among 44 county-level areas in Idaho (1 = highest); measures without data in every county rank a smaller field, down to 35.
MeasureLatah CountyIdaho rank
Traffic volume (AADT)3,841#16 of 44
Highway vehicle-miles per day209,095#25 of 35
Truck share on highways9.1%#30 of 35
Highway trucks per day551#29 of 35
Average travel time30.0 min#35 of 44
Average driver income$65,570#33 of 44
Average driver age31.3 yrs#43 of 44

Latah County ranks #16 of 44 on average daily traffic volume but #43 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 Latah County, Idaho

On their busiest stretches, the three busiest roads in Latah County carry 18,649 vehicles a day on average, 4.9 times the typical road in the county (3,841).

3rd Street leads with 23,616 vehicles a day, 1,375 of them trucks (5.8%). It tops the truck ranking too, with the most trucks.

Trips using Main Street are long: a median of 51.4 minutes against 30.0 county-wide, the mark of a through route.

Drivers on Washington Street are noticeably older, with a median age of 36.9 against 31.3 across the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
13rd StreetPrimary road · 23,616vehicles1,375trucks · 5.8%
Road class
Primary road
Congestion ratio
78.4%
Median trip time
26.2 min
Drivers’ median age
29.7 yrs
Drivers’ average income
$57,127

3rd Street is one of the more congested roads here: trips take 78% longer than at free-flow speed, against 17% county-wide.

2Pullman RoadPrimary road · 19,954vehicles1,046trucks · 5.2%
Road class
Primary road
Congestion ratio
30.7%
Median trip time
26.8 min
Drivers’ median age
29.0 yrs
Drivers’ average income
$56,892

Delays build on Pullman Road: its congestion ratio of 31% over free-flow time is well above the county's 17%.

3Washington StreetTrunk road · 12,378vehicles731trucks · 5.9%
Road class
Trunk road
Congestion ratio
28.1%
Median trip time
40.5 min
Drivers’ median age
36.9 yrs
Drivers’ average income
$59,203

Washington Street carries through traffic: the median trip using it lasts 40.5 minutes, against 30.0 for the county.

4Jackson StreetTrunk road · 11,830vehicles786trucks · 6.6%
Road class
Trunk road
Congestion ratio
26.3%
Median trip time
38.6 min
Drivers’ median age
31.9 yrs
Drivers’ average income
$57,267

At 3.1 times the county average, Jackson Street draws drivers from neighborhoods averaging $57,267 in household income.

5Main StreetTrunk road · 10,632vehicles845trucks · 8.0%
Road class
Trunk road
Congestion ratio
18.6%
Median trip time
51.4 min
Drivers’ median age
34.9 yrs
Drivers’ average income
$64,455

The busiest stretch of Main Street carries 2.8 times the county average; trucks are 8.0% of it, above the county-wide 7.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
13rd StreetPrimary road · #1 by traffic23,616vehicles1,375trucks · 5.8%
2Pullman RoadPrimary road · #2 by traffic19,954vehicles1,046trucks · 5.2%
3Main StreetTrunk road · #5 by traffic10,632vehicles845trucks · 8.0%
4Jackson StreetTrunk road · #4 by traffic11,830vehicles786trucks · 6.6%
5Washington StreetTrunk road · #3 by traffic12,378vehicles731trucks · 5.9%
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

LatahDepartment 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 Latah County

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

Need segment-level traffic data?

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