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Traffic heat map of Hill County, Texas: 559 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Purple Heart Trail and I 35W

Hill County, Texas Traffic Counts

Its busiest road, Purple Heart Trail, carries 67,423 vehicles a day, 25.3 times the average road. This page breaks down traffic in Hill County, Texas across 559 miles of monitored roads split into 5,291 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 Volume & Performance in Hill County, Texas

Traffic

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

vehicles per day2,664
Trucks

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

17.9%
Average travel time

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

34.7 min
Congestion ratio

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

8.6%
Drivers’ average age

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

42.7 yrs
Drivers’ average income

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

$66,133

A typical monitored road in Hill County, Texas sees 2,664 vehicles per day, while its 559 miles of monitored roads together handle 2,792,344 vehicle-miles traveled per day (≈1.0 billion per year). Freight weighs heavily here: trucks are 17.9% of traffic, against 9.8% across Texas.

Traffic 61% below the Texas average

Hill sees 61% lower average daily traffic volume than the state average (2,664 vehicles per day against 6,895), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Hill accounts for about 0.4% of Texas's statewide total of vehicle-miles. Hill carries less traffic than 57% of counties in Texas.

Journey times run 6% higher than the state level, at 34.7 minutes on average. 51% of counties in Texas have a shorter average travel time than Hill's 34.7 minutes.

Congestion runs 48% lower than the state level, at a ratio of 8.6%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Hill County, Texas

Trafficvehicles per day16,173
Trucks22.2%
Average travel time68.4 min
Congestion ratio24.4%
Drivers’ average age40.9 yrs
Drivers’ average income$71,749

A little more than half of the driving in Hill County, Texas happens on highways: 69% of all vehicle-miles. The average highway carries 16,173 vehicles per day, 679% more than the average non-highway road in the same area, which carries 2,075 vehicles per day.

Yet highways are only 19% of the road network, 108 miles in 221 segments, so each mile of them is 3.6 times as busy as the average road mile.

That is more highway travel volume than 85% of counties in Texas.

More highway trucks than 96% of counties in Texas

Highway truck concentration here runs 62% higher than the state average, at 22.2%. That marks Hill as a major freight corridor, where highway access is what logistics operators compete on.

78% of counties in Texas see a lower highway truck share than Hill's 22.2%. 96% of counties in Texas see fewer highway trucks per day than Hill's roughly 3,597.

non-highway traffic icon

Non-highway Traffic in Hill County, Texas

Trafficvehicles per day2,075
Trucks8.1%
Average travel time33.2 min
Congestion ratio7.9%
Drivers’ average age49.3 yrs
Drivers’ average income$63,243

A significant share of driving in Hill County, Texas, 31% of vehicle-miles, happens on local roads. A typical local road sees 2,075 vehicles per day.

Local roads make up 81% of the monitored road miles (451 miles in 5,070 segments) but carry less than their share of travel: 856,764 vehicle-miles traveled per day (≈313 million per year). The truck share on non-highway roads is 8.1%.

Local congestion 51% below the Texas average

Non-highway roads carry a truck concentration that's 64% lower than the highway network.

Non-highway congestion (7.9%) runs 51% lower than the state average, pointing to smoother local traffic flow.

64% of counties in Texas see higher average driver income among trip origins than Hill. The driver population here skews younger than 75% of counties in Texas.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Hill County vs. Texas Traffic Comparison

The truck share sets Hill County apart: 83% above the Texas average. Its highway truck share is also 62% above.

MetricHill CountyTexas averageDifference
Traffic2,6646,895-61.4%
Truck % (Total Traffic)17.9%9.8%+83.2%
Truck % (Highway)22.2%13.8%+61.7%
Avg. Travel Time34.7 min32.6 min+6.4%

How Hill County compares

Hill County has a higher truck share than any nearby county

Against the 4 nearest areas, Hill County carries 45.4% less traffic on a typical road and is 34.9% less congested; 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.

Hill 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
Hill County2,66417.9%2,792,34434.7 min8.6%
Ellis County, Texas4,69113.9%6,678,18629.4 min12.3%
McLennan County, Texas6,84712.2%7,453,41933.4 min19.6%
Bosque County, Texas1,9419.4%578,11635.2 min6.2%
Johnson County, Texas6,0269.6%4,525,82034.3 min14.6%
Texas average6,8959.8%N/A32.6 min16.4%

Hill County ranked within Texas

Hill County sits in the top quarter of the Texas field on highway truck volume, at #10 of 227.

Hill County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureHill CountyTexas rank
Traffic volume (AADT)2,664#145 of 254
Highway vehicle-miles per day1,935,580#35 of 227
Truck share on highways22.2%#50 of 227
Highway trucks per day3,597#10 of 227
Average travel time34.7 min#126 of 254
Average driver income$66,133#162 of 254
Average driver age42.7 yrs#191 of 254

Hill County ranks #10 of 227 on highway truck volume but #191 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 Hill County, Texas

The three busiest roads in Hill County average 45,088 vehicles a day, 16.9 times the county average of 2,664 across all its monitored roads.

Purple Heart Trail is the busiest road, at 67,423 vehicles a day, 14,808 of them trucks (22.0%). No other road comes close: I 35W, in second place, carries 34,016. It tops the truck ranking too, with the most trucks.

Purple Heart Trail carries longer journeys than most roads here, with a median trip of 69.4 minutes against 34.7 county-wide.

Drivers on Brazos Avenue are noticeably older, with a median age of 51.5 against 42.7 across the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · 67,423vehicles14,808trucks · 22.0%
Road class
Motorway
Congestion ratio
49.4%
Median trip time
69.4 min
Drivers’ median age
40.6 yrs
Drivers’ average income
$72,313

Purple Heart Trail is one of the more congested roads here: trips take 49% longer than at free-flow speed, against 9% county-wide.

2I 35WMotorway · 34,016vehicles7,501trucks · 22.1%
Road class
Motorway
Congestion ratio
32.2%
Median trip time
62.9 min
Drivers’ median age
41.7 yrs
Drivers’ average income
$75,248

Drivers on I 35W are on long journeys, a median 62.9 minutes against 34.7 county-wide: a through route more than a local street.

3I 35EMotorway · 33,825vehicles8,789trucks · 26.0%
Road class
Motorway
Congestion ratio
38.3%
Median trip time
68.0 min
Drivers’ median age
42.1 yrs
Drivers’ average income
$73,076

Delays build on I 35E: its congestion ratio of 38% over free-flow time is well above the county's 9%.

4Brazos AvenueSecondary road · 11,759vehicles547trucks · 4.7%
Road class
Secondary road
Congestion ratio
26.2%
Median trip time
28.5 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$53,532

The busiest stretch of Brazos Avenue carries 4.4 times the county average; trucks are 4.7% of it, below the county-wide 17.9%.

5Corsicana HighwayPrimary road · 11,736vehicles562trucks · 4.8%
Road class
Primary road
Congestion ratio
24.6%
Median trip time
33.7 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$61,287

On its busiest stretch, Corsicana Highway carries 4.4 times the county average; trucks are 4.8% of it, below the county-wide 17.9%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Purple Heart TrailMotorway · #1 by traffic67,423vehicles14,808trucks · 22.0%
2I 35EMotorway · #3 by traffic33,825vehicles8,789trucks · 26.0%
3I 35WMotorway · #2 by traffic34,016vehicles7,501trucks · 22.1%
4Elm StreetPrimary road · 10,888vehicles984trucks · 9.0%
Road class
Primary road
Congestion ratio
25.6%
Median trip time
34.2 min
Drivers’ median age
50.0 yrs
Drivers’ average income
$62,108

Elm Street peaks at 10,888 vehicles a day, 4.1 times the county average; trucks are 9.0% of it, below the county-wide 17.9%.

5TX 31Trunk road · 5,203vehicles726trucks · 13.9%
Road class
Trunk road
Congestion ratio
7.3%
Median trip time
47.5 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$56,945

TX 31 carries 2.0 times the county average at its busiest, 726 of them trucks (13.9%, below the county-wide 17.9%).

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

HillDepartment 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 Hill County

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

Need segment-level traffic data?

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