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Traffic heat map of Callahan County, Texas: 325 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 20 and TX 36

Callahan County, Texas Traffic Counts

TrafficZoom tracks traffic on 325 road miles in Callahan County, Texas, divided into 2,512 segments averaging 683 ft. About 1 in 5 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 Callahan County, Texas

Traffic

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

vehicles per day2,056
Trucks

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

19.8%
Average travel time

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

35.0 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.

45.7 yrs
Drivers’ average income

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

$73,034

The average monitored road in Callahan County, Texas carries 2,056 vehicles per day. Across its 325 miles of monitored roads, that adds up to 1,047,459 vehicle-miles traveled per day (≈382 million per year). About 1 in 5 vehicles is a truck, well above the 9.8% across Texas - a freight-heavy mix.

Traffic 70% below the Texas average

Callahan's average daily traffic volume is 70% lower than the state average - 2,056 vehicles per day against 6,895 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Callahan accounts for about 0.1% of Texas's statewide total of vehicle-miles. 72% of counties in Texas see more traffic than Callahan's 2,056 vehicles per day.

At 35.0 minutes, the average travel time is 7% higher than the state level. Its average travel time of 35.0 minutes is longer than 53% of counties in Texas.

Congestion runs 56% lower than the state level, at a ratio of 7.3%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Callahan County, Texas

Trafficvehicles per day10,878
Trucks25.1%
Average travel time47.7 min
Congestion ratio24.1%
Drivers’ average age45.0 yrs
Drivers’ average income$74,043

A little more than half of the driving in Callahan County, Texas happens on highways: 68% of all vehicle-miles. The average highway carries 10,878 vehicles per day, 618% more than the average non-highway road in the same area, which carries 1,516 vehicles per day.

Yet highways are only 19% of the road network, 62 miles in 145 segments, so each mile of them is 3.6 times as busy as the average road mile.

58% of counties in Texas move less traffic on their highways.

A major freight corridor

Highway truck concentration here runs 82% higher than the state average, at 25.1%. That marks Callahan as a major freight corridor, where highway access is what logistics operators compete on.

By truck concentration, highways here outrank 85% of counties in Texas. 84% of counties in Texas see fewer highway trucks per day than Callahan's roughly 2,725.

non-highway traffic icon

Non-highway Traffic in Callahan County, Texas

Trafficvehicles per day1,516
Trucks8.6%
Average travel time34.2 min
Congestion ratio6.2%
Drivers’ average age49.0 yrs
Drivers’ average income$71,670

A significant share of driving in Callahan County, Texas, 32% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 1,516 vehicles per day.

Local roads make up 81% of the monitored road miles (263 miles in 2,367 segments) but carry less than their share of travel: 331,105 vehicle-miles traveled per day (≈121 million per year). The truck share on non-highway roads is 8.6%.

Local congestion 61% below the Texas average

The concentration of trucks on non-highway roads is 66% lower than on highways.

Non-highway congestion (6.2%) runs 61% lower than the state average, pointing to smoother local traffic flow.

Callahan's average driver income is higher than 62% of counties in Texas. 50% of counties in Texas have a younger driver population than Callahan.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 65% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 8% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even May–July, the busiest stretch, runs only +4% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Callahan County, Texas, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+4% in high season).

Callahan County vs. Texas Traffic Comparison

Of the four measures, truck share differs most: Callahan County runs 103% above the Texas average. Its highway truck share is also 82% above.

MetricCallahan CountyTexas averageDifference
Traffic2,0566,895-70.2%
Truck % (Total Traffic)19.8%9.8%+103.1%
Truck % (Highway)25.1%13.8%+82.2%
Avg. Travel Time35.0 min32.6 min+7.2%

How Callahan County compares

Callahan County against nearby counties

Compared with its 4 closest neighbours, Callahan County carries 38.9% less traffic on a typical road and runs 6.8 percentage points more truck traffic; it has the fourth busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

Callahan 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
Callahan County2,05619.8%1,047,45935.0 min7.3%
Taylor County, Texas5,54611.6%3,374,12031.8 min15.3%
Eastland County, Texas2,13719.9%1,373,89632.0 min7.3%
Coleman County, Texas1,67412.1%390,33239.2 min5.5%
Brown County, Texas4,1138.6%814,19030.7 min11.4%
Texas average6,8959.8%N/A32.6 min16.4%

Callahan County ranked within Texas

Callahan County sits in the top quarter of the Texas field on truck share on highways, at #36 of 227.

Callahan County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureCallahan CountyTexas rank
Traffic volume (AADT)2,056#183 of 254
Highway vehicle-miles per day716,354#95 of 227
Truck share on highways25.1%#36 of 227
Highway trucks per day2,725#38 of 227
Average travel time35.0 min#120 of 254
Average driver income$73,034#98 of 254
Average driver age45.7 yrs#128 of 254

Busiest roads in Callahan County, Texas

On their busiest stretches, the three busiest roads in Callahan County carry 11,048 vehicles a day on average, 5.4 times the typical road in the county (2,056).

I 20 leads with 23,027 vehicles a day, 5,768 of them trucks (25.1%). No other road comes close: TX 36, in second place, carries 5,348. It also carries the most trucks.

Drivers on Main Street are noticeably older, with a median age of 56.4 against 45.7 across the county.

Trips using I 20 are long: a median of 47.7 minutes against 35.0 county-wide, the mark of a through route.

Few trucks use Southwest 5th Street: 9.2% of its traffic, under half the county's 19.8%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 20Motorway · 23,027vehicles5,768trucks · 25.1%
Road class
Motorway
Congestion ratio
24.1%
Median trip time
47.7 min
Drivers’ median age
45.0 yrs
Drivers’ average income
$74,043

Travel on I 20's busiest stretch runs 24% over free-flow time, against 7% across the county, so expect slower peak hours.

2TX 36Primary road · 5,348vehicles586trucks · 11.0%
Road class
Primary road
Congestion ratio
12.2%
Median trip time
42.8 min
Drivers’ median age
47.6 yrs
Drivers’ average income
$83,895

TX 36 carries 2.6 times the county average on its busiest stretch, where the median trip lasts 42.8 minutes.

3Southwest 5th StreetPrimary road · 4,769vehicles440trucks · 9.2%
Road class
Primary road
Congestion ratio
10.8%
Median trip time
47.6 min
Drivers’ median age
54.2 yrs
Drivers’ average income
$59,125

Drivers on Southwest 5th Street are on long journeys, a median 47.6 minutes against 35.0 county-wide: a through route more than a local street.

4Cherry StreetSecondary road · 4,423vehicles195trucks · 4.4%
Road class
Secondary road
Congestion ratio
8.1%
Median trip time
26.2 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$70,783

Cherry Street is a local road at heart: the median trip using it lasts 26.2 minutes, against 35.0 for the county.

5Main StreetPrimary road · 3,832vehicles322trucks · 8.4%
Road class
Primary road
Congestion ratio
8.7%
Median trip time
35.3 min
Drivers’ median age
56.4 yrs
Drivers’ average income
$58,651

Main Street carries 86% more than the county average on its busiest stretch, where the median trip lasts 35.3 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 20Motorway · #1 by traffic23,027vehicles5,768trucks · 25.1%
2TX 36Primary road · #2 by traffic5,348vehicles586trucks · 11.0%
3Southwest 5th StreetPrimary road · #3 by traffic4,769vehicles440trucks · 9.2%
4TX 351Primary road · 3,526vehicles357trucks · 10.1%
Road class
Primary road
Median trip time
38.7 min
Drivers’ median age
42.5 yrs
Drivers’ average income
$67,554

At 71% more than the county average, TX 351 draws drivers from neighborhoods averaging $67,554 in household income.

5Main StreetPrimary road · #5 by traffic3,832vehicles322trucks · 8.4%
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

CallahanDepartment 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 Callahan County

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

Need segment-level traffic data?

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