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Traffic heat map of Dallam County, Texas: 275 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Railroad Street and 7th Street

Dallam County, Texas Traffic Counts

TrafficZoom tracks traffic on 275 road miles in Dallam County, Texas, divided into 1,083 segments averaging 1,341 ft. About 1 in 6 vehicles here is a truck, against 1 in 10 across Texas. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Dallam County, Texas

Traffic

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

vehicles per day2,379
Trucks

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

17.6%
Average travel time

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

37.6 min
Congestion ratio

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

7.3%
Drivers’ average age

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

43.2 yrs
Drivers’ average income

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

$84,416

A typical monitored road in Dallam County, Texas sees 2,379 vehicles per day, while its 275 miles of monitored roads together handle 416,101 vehicle-miles traveled per day (≈152 million per year). Freight weighs heavily here: trucks are 17.6% of traffic, against 9.8% across Texas.

Traffic 65% below the Texas average

Dallam sees 65% lower average daily traffic volume than the state average (2,379 vehicles per day against 6,895), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries less than 0.1% of Texas's statewide total of vehicle-miles. By volume, Dallam's 2,379 vehicles per day trails 64% of counties in Texas.

The average trip takes 37.6 minutes, 15% higher than the state level. Its average travel time of 37.6 minutes is longer than 70% of counties in Texas.

The congestion ratio of 7.3% is 55% 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 Dallam County, Texas

Trafficvehicles per day5,184
Trucks19.6%
Average travel time38.7 min
Congestion ratio9.0%
Drivers’ average age43.3 yrs
Drivers’ average income$80,293

Highways carry the vast majority of travel in Dallam County, Texas, 80% of all vehicle-miles. The average highway carries 5,184 vehicles per day, 458% more than the average non-highway road in the same area, which carries 930 vehicles per day.

With 39% of the road miles (106 miles in 369 segments), highways punch above their length, carrying 333,914 vehicle-miles traveled per day (≈122 million per year).

Fewer highway trucks than 73% of counties in Texas

The concentration of trucks on highways (19.6%) is 43% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

70% of counties in Texas see a lower highway truck share than Dallam's 19.6%. 73% of counties in Texas see more highway trucks per day than Dallam's roughly 1,017.

non-highway traffic icon

Non-highway Traffic in Dallam County, Texas

Trafficvehicles per day930
Trucks9.7%
Average travel time37.1 min
Congestion ratio6.5%
Drivers’ average age42.8 yrs
Drivers’ average income$92,623

Local roads carry a smaller share of travel in Dallam County, Texas, 20% of vehicle-miles; most driving happens on highways. The average non-highway road carries 930 vehicles per day.

Spread over 169 miles and 714 segments, 61% of the road network, local roads carry a lighter load per mile: 82,187 vehicle-miles traveled per day (≈30.0 million per year). About 1 in 10 vehicles on non-highway roads is a truck (9.7%).

Drivers from higher-income areas than 85% of counties in Texas

The concentration of trucks on non-highway roads is 51% lower than on highways.

The non-highway congestion ratio of 6.5% is 60% lower than the state level, suggesting more efficient local mobility than the state average.

85% of counties in Texas see lower average driver income among trip origins than Dallam. Dallam's median driver age is lower than 69% of counties in Texas.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Dallam County vs. Texas Traffic Comparison

The truck share sets Dallam County apart: 81% above the Texas average. Its average daily traffic per road, by contrast, is 65% below.

MetricDallam CountyTexas averageDifference
Traffic2,3796,895-65.5%
Truck % (Total Traffic)17.6%9.8%+80.7%
Truck % (Highway)19.6%13.8%+42.6%
Avg. Travel Time37.6 min32.6 min+15.3%

How Dallam County compares

Dallam County against nearby counties

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

Dallam County and the 4 nearest county-level areas by centroid distance, with the Texas average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Dallam County2,37917.6%416,10137.6 min7.3%
Hartley County, Texas2,36421.6%494,45448.4 min7.4%
Cimarron County, Oklahoma1,65825.8%322,25650.6 min4.5%
Sherman County, Texas1,84420.6%250,93744.7 min5.1%
Moore County, Texas4,25215.0%578,67033.8 min8.3%
Texas average6,8959.8%N/A32.6 min16.4%

Dallam County ranked within Texas

Average driver income places Dallam County #39 of 254 in Texas - the top quarter of the state.

Dallam County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureDallam CountyTexas rank
Traffic volume (AADT)2,379#162 of 254
Highway vehicle-miles per day333,914#154 of 227
Truck share on highways19.6%#68 of 227
Highway trucks per day1,017#165 of 227
Average travel time37.6 min#78 of 254
Average driver income$84,416#39 of 254
Average driver age43.2 yrs#175 of 254

Busiest roads in Dallam County, Texas

On their busiest stretches, the three busiest roads in Dallam County carry 8,243 vehicles a day on average, 3.5 times the typical road in the county (2,379).

Railroad Street leads with 12,710 vehicles a day, 1,186 of them trucks (9.3%). That is 2.1 times the next road, 7th Street (6,017). It also carries the most trucks.

Trips using US 287 are long: a median of 57.5 minutes against 37.6 county-wide, the mark of a through route.

Freight stands out on US 287: trucks are 27.1% of the traffic there, against 17.6% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Railroad StreetTrunk road · 12,710vehicles1,186trucks · 9.3%
Road class
Trunk road
Congestion ratio
18.2%
Median trip time
37.8 min
Drivers’ median age
42.8 yrs
Drivers’ average income
$81,778

Railroad Street is one of the more congested roads here: trips take 18% longer than at free-flow speed, against 7% county-wide.

27th StreetTrunk road · 6,017vehicles630trucks · 10.5%
Road class
Trunk road
Congestion ratio
7.6%
Median trip time
36.6 min
Drivers’ median age
45.1 yrs
Drivers’ average income
$82,279

The busiest stretch of 7th Street carries 2.5 times the county average; trucks are 10.5% of it, below the county-wide 17.6%.

32nd StreetTrunk road · 6,001vehicles794trucks · 13.2%
Road class
Trunk road
Congestion ratio
8.6%
Median trip time
29.2 min
Drivers’ median age
43.2 yrs
Drivers’ average income
$71,016

On its busiest stretch, 2nd Street carries 2.5 times the county average; trucks are 13.2% of it, below the county-wide 17.6%.

4Denver AvenueTrunk road · 5,540vehicles573trucks · 10.3%
Road class
Trunk road
Congestion ratio
6.3%
Median trip time
32.4 min
Drivers’ median age
45.1 yrs
Drivers’ average income
$82,422

Denver Avenue peaks at 5,540 vehicles a day, 2.3 times the county average; trucks are 10.3% of it, below the county-wide 17.6%.

5US 87Trunk road · 5,347vehicles811trucks · 15.2%
Road class
Trunk road
Congestion ratio
6.2%
Median trip time
50.2 min
Drivers’ median age
43.1 yrs
Drivers’ average income
$80,172

US 87 carries through traffic: the median trip using it lasts 50.2 minutes, against 37.6 for the county.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Railroad StreetTrunk road · #1 by traffic12,710vehicles1,186trucks · 9.3%
2US 287Trunk road · 3,011vehicles815trucks · 27.1%
Road class
Trunk road
Congestion ratio
5.9%
Median trip time
57.5 min
Drivers’ median age
42.5 yrs
Drivers’ average income
$69,409

At 27% more than the county average, US 287 draws drivers from neighborhoods averaging $69,409 in household income.

3US 87Trunk road · #5 by traffic5,347vehicles811trucks · 15.2%
42nd StreetTrunk road · #3 by traffic6,001vehicles794trucks · 13.2%
57th StreetTrunk road · #2 by traffic6,017vehicles630trucks · 10.5%
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

DallamDepartment 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 Dallam County

The same traffic breakdown for the areas closest to Dallam County, Texas.

Need segment-level traffic data?

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