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Traffic heat map of Frio County, Texas: 374 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Purple Heart Trail and I 35

Frio County, Texas Traffic Counts

Traffic analytics for Frio County, Texas, calculated from real-world mobile and sensor networks on 2,163 road segments (374 road miles, about 913 ft each). About 1 in 4 vehicles here is a truck, against 1 in 10 across Texas. 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 Frio County, Texas

Traffic

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

vehicles per day2,446
Trucks

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

26.0%
Average travel time

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

36.9 min
Congestion ratio

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

7.9%
Drivers’ average age

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

41.0 yrs
Drivers’ average income

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

$65,361

Our data shows 2,446 vehicles per day on the average road in Frio County, Texas, and 1,339,866 vehicle-miles traveled per day (≈489 million per year) across its 374 miles of monitored roads. Freight weighs heavily here: trucks are 26.0% of traffic, against 9.8% across Texas.

Traffic 65% below the Texas average

At 2,446 vehicles per day, the average monitored road in Frio carries 65% less traffic than the state average of 6,895, 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 0.2% of Texas's statewide total. 62% of counties in Texas see more traffic than Frio's 2,446 vehicles per day.

At 36.9 minutes, the average travel time is 13% higher than the state level. Its average travel time of 36.9 minutes is longer than 66% of counties in Texas.

Congestion runs 51% lower than the state level, at a ratio of 7.9%, 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 Frio County, Texas

Trafficvehicles per day8,730
Trucks31.6%
Average travel time65.9 min
Congestion ratio20.5%
Drivers’ average age40.7 yrs
Drivers’ average income$64,439

Highways carry most of the traffic in Frio County, Texas: 72% of all vehicle-miles. The average highway carries 8,730 vehicles per day, 374% more than the average non-highway road in the same area, which carries 1,842 vehicles per day.

Highways make up 26% of the monitored road miles (97 miles, 190 segments), so they carry more than their share: 966,705 vehicle-miles traveled per day (≈353 million per year).

By highway travel volume, Frio outranks 69% of counties in Texas.

A major freight corridor

Highway truck concentration here runs 129% higher than the state average, at 31.6%. That marks Frio as a major freight corridor, where highway access is what logistics operators compete on.

By truck concentration, highways here outrank 92% of counties in Texas. 88% of counties in Texas see fewer highway trucks per day than Frio's roughly 2,754.

non-highway traffic icon

Non-highway Traffic in Frio County, Texas

Trafficvehicles per day1,842
Trucks11.7%
Average travel time34.1 min
Congestion ratio6.7%
Drivers’ average age42.0 yrs
Drivers’ average income$66,710

Local roads carry a smaller share of travel in Frio County, Texas, 28% of vehicle-miles; most driving happens on highways. The average non-highway road carries 1,842 vehicles per day.

Spread over 278 miles and 1,973 segments, 74% of the road network, local roads carry a lighter load per mile: 373,161 vehicle-miles traveled per day (≈136 million per year). Trucks make up 11.7% of non-highway traffic, about 1 in 9 vehicles.

Younger drivers than 89% of counties in Texas

Non-highway roads carry a truck concentration that's 63% lower than the highway network.

At 58% lower than the state level, the non-highway congestion ratio of 6.7% signals easier movement on local roads.

66% of counties in Texas see higher average driver income among trip origins than Frio. 89% of counties in Texas have an older driver population than Frio.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Frio County, Texas, traffic is spread evenly through the day, with the busiest hour carrying only about 6%.

Frio County vs. Texas Traffic Comparison

Of the four measures, truck share differs most: Frio County runs 166% above the Texas average. Its highway truck share is also 129% above.

MetricFrio CountyTexas averageDifference
Traffic2,4466,895-64.5%
Truck % (Total Traffic)26.0%9.8%+166.2%
Truck % (Highway)31.6%13.8%+129.5%
Avg. Travel Time36.9 min32.6 min+13.1%

How Frio County compares

Frio County against nearby counties

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

Frio 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
Frio County2,44626.0%1,339,86636.9 min7.9%
La Salle County, Texas2,69132.1%1,304,40856.5 min9.1%
Atascosa County, Texas4,21819.2%2,081,32432.7 min13.3%
Medina County, Texas3,68112.6%1,585,88331.1 min8.9%
Zavala County, Texas2,48721.9%431,05845.7 min7.6%
Texas average6,8959.8%N/A32.6 min16.4%

Frio County ranked within Texas

Truck share on highways places Frio County #18 of 227 in Texas - the top quarter of the state.

Frio County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureFrio CountyTexas rank
Traffic volume (AADT)2,446#157 of 254
Highway vehicle-miles per day966,705#72 of 227
Truck share on highways31.6%#18 of 227
Highway trucks per day2,754#29 of 227
Average travel time36.9 min#86 of 254
Average driver income$65,361#169 of 254
Average driver age41.0 yrs#226 of 254

Frio County ranks #18 of 227 on truck share on highways but #226 of 254 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Frio County, Texas

On their busiest stretches, the three busiest roads in Frio County carry 13,434 vehicles a day on average, 5.5 times the typical road in the county (2,446).

Purple Heart Trail is the busiest road, at 22,524 vehicles a day, 7,162 of them trucks (31.8%). That is 2.3 times the next road, I 35 (9,798). It tops the truck ranking too, with the most trucks.

US 57 carries longer journeys than most roads here, with a median trip of 76.4 minutes against 36.9 county-wide.

Few trucks use Comal Street: 7.1% of its traffic, under half the county's 26.0%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · 22,524vehicles7,162trucks · 31.8%
Road class
Motorway
Congestion ratio
23.0%
Median trip time
65.4 min
Drivers’ median age
40.8 yrs
Drivers’ average income
$64,327

Purple Heart Trail is one of the more congested roads here: trips take 23% longer than at free-flow speed, against 8% county-wide.

2I 35Secondary road · 9,798vehicles1,517trucks · 15.5%
Road class
Secondary road
Congestion ratio
28.6%
Median trip time
53.9 min
Drivers’ median age
40.0 yrs
Drivers’ average income
$71,617

Delays build on I 35: its congestion ratio of 29% over free-flow time is well above the county's 8%.

3Comal StreetPrimary road · 7,981vehicles564trucks · 7.1%
Road class
Primary road
Congestion ratio
14.4%
Median trip time
31.9 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$70,622

On its busiest stretch, Comal Street carries 3.3 times the county average; trucks are 7.1% of it, below the county-wide 26.0%.

4Oak StreetPrimary road · 7,660vehicles545trucks · 7.1%
Road class
Primary road
Congestion ratio
12.4%
Median trip time
27.9 min
Drivers’ median age
41.9 yrs
Drivers’ average income
$77,042

Oak Street peaks at 7,660 vehicles a day, 3.1 times the county average; trucks are 7.1% of it, below the county-wide 26.0%.

5US 57Trunk road · 6,281vehicles1,899trucks · 30.2%
Road class
Trunk road
Congestion ratio
14.0%
Median trip time
76.4 min
Drivers’ median age
37.0 yrs
Drivers’ average income
$68,875

US 57 carries 2.6 times the county average at its busiest, 1,899 of them trucks (30.2%, above the county-wide 26.0%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · #1 by traffic22,524vehicles7,162trucks · 31.8%
2US 57Trunk road · #5 by traffic6,281vehicles1,899trucks · 30.2%
3I 35Secondary road · #2 by traffic9,798vehicles1,517trucks · 15.5%
4Comal StreetPrimary road · #3 by traffic7,981vehicles564trucks · 7.1%
5Oak StreetPrimary road · #4 by traffic7,660vehicles545trucks · 7.1%
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

FrioDepartment 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 Frio County

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

Need segment-level traffic data?

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