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Traffic heat map of San Jacinto County, Texas: 272 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 59 and TX 105

San Jacinto County, Texas Traffic Counts

Its busiest road, US 59, carries 30,707 vehicles a day, 9.8 times the average road. This page breaks down traffic in San Jacinto County, Texas across 272 miles of monitored roads split into 2,804 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 San Jacinto County, Texas

Traffic

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

vehicles per day3,148
Trucks

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

11.5%
Average travel time

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

34.8 min
Congestion ratio

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

8.9%
Drivers’ average age

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

46.3 yrs
Drivers’ average income

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

$64,483

The average monitored road in San Jacinto County, Texas carries 3,148 vehicles per day. Across its 272 miles of monitored roads, that adds up to 1,034,617 vehicle-miles traveled per day (≈378 million per year). At 11.5%, the truck share runs above the 9.8% across Texas: about 1 in 9 vehicles.

Traffic 54% below the Texas average

San Jacinto's average daily traffic volume is 54% lower than the state average - 3,148 vehicles per day against 6,895 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 0.1% of Texas's statewide total. San Jacinto carries more traffic than 52% of counties in Texas.

Journey times run 6% higher than the state level, at 34.8 minutes on average. On travel time, San Jacinto runs longer than 51% of counties in Texas.

Congestion runs 46% lower than the state level, at a ratio of 8.9%, 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 San Jacinto County, Texas

Trafficvehicles per day9,910
Trucks14.7%
Average travel time52.4 min
Congestion ratio19.7%
Drivers’ average age46.0 yrs
Drivers’ average income$66,653

Highways carry more than half of all travel in San Jacinto County, Texas (57% of vehicle-miles). The average highway carries 9,910 vehicles per day, 295% more than the average non-highway road in the same area, which carries 2,509 vehicles per day.

Yet highways are only 17% of the road network, 46 miles in 242 segments, so each mile of them is 3.4 times as busy as the average road mile.

That is more highway travel volume than 50% of counties in Texas.

More highway trucks than 67% of counties in Texas

Highway truck concentration here runs 7% higher than the state average, at 14.7%. The highway traffic mix is typical for Texas: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 54% of counties in Texas. San Jacinto's highway truck count is higher than 67% of counties in Texas, at roughly 1,452 trucks per day.

non-highway traffic icon

Non-highway Traffic in San Jacinto County, Texas

Trafficvehicles per day2,509
Trucks7.2%
Average travel time33.1 min
Congestion ratio7.9%
Drivers’ average age47.1 yrs
Drivers’ average income$62,627

A significant share of driving in San Jacinto County, Texas, 43% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 2,509 vehicles per day.

Spread over 226 miles and 2,562 segments, 83% of the road network, local roads carry a lighter load per mile: 443,209 vehicle-miles traveled per day (≈162 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.2%).

Local congestion 51% below the Texas average

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

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

San Jacinto's average driver income is lower than 69% of counties in Texas. The driver population here skews older than 58% of counties in Texas.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

San Jacinto County vs. Texas Traffic Comparison

The average daily traffic per road sets San Jacinto County apart: 54% below the Texas average. Its truck share, by contrast, is 17% above.

MetricSan Jacinto CountyTexas averageDifference
Traffic3,1486,895-54.3%
Truck % (Total Traffic)11.5%9.8%+17.4%
Truck % (Highway)14.7%13.8%+6.5%
Avg. Travel Time34.8 min32.6 min+6.5%

How San Jacinto County compares

San Jacinto County moves the least traffic of its nearby counties

Against the 4 nearest areas, San Jacinto County moves 18.5% of the total daily travel and carries 49.7% less traffic on a typical road; it has the quietest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

San Jacinto 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
San Jacinto County3,14811.5%1,034,61734.8 min8.9%
Polk County, Texas4,98812.6%1,966,89833.2 min12.2%
Walker County, Texas5,34113.5%2,813,82433.1 min12.1%
Montgomery County, Texas9,5986.0%15,010,31431.7 min19.2%
Liberty County, Texas5,10410.2%2,639,27735.6 min12.3%
Texas average6,8959.8%N/A32.6 min16.4%

San Jacinto County ranked within Texas

On all 7 measures below, San Jacinto County lands in the middle of the Texas field rather than at either end.

San Jacinto County ranked among 254 county-level areas in Texas (1 = highest); measures without data in every county rank a smaller field, down to 227.
MeasureSan Jacinto CountyTexas rank
Traffic volume (AADT)3,148#122 of 254
Highway vehicle-miles per day591,409#114 of 227
Truck share on highways14.7%#123 of 227
Highway trucks per day1,452#76 of 227
Average travel time34.8 min#125 of 254
Average driver income$64,483#175 of 254
Average driver age46.3 yrs#108 of 254

Busiest roads in San Jacinto County, Texas

The three busiest roads in San Jacinto County average 18,522 vehicles a day, 5.9 times the county average of 3,148 across all its monitored roads.

US 59 leads with 30,707 vehicles a day, 4,625 of them trucks (15.1%). No other road comes close: US-59, in second place, carries 15,252. It also carries the most trucks.

US 59 carries longer journeys than most roads here, with a median trip of 55.5 minutes against 34.8 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 59Trunk road · 30,707vehicles4,625trucks · 15.1%
Road class
Trunk road
Congestion ratio
33.9%
Median trip time
55.5 min
Drivers’ median age
45.4 yrs
Drivers’ average income
$67,876

Delays build on US 59: its congestion ratio of 34% over free-flow time is well above the county's 9%.

2US-59Trunk road · 15,252vehicles2,055trucks · 13.5%
Road class
Trunk road
Congestion ratio
34.5%
Median trip time
38.7 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$70,546

Travel on US-59's busiest stretch runs 34% over free-flow time, against 9% across the county, so expect slower peak hours.

3TX 105Primary road · 9,607vehicles886trucks · 9.2%
Road class
Primary road
Median trip time
48.6 min
Drivers’ median age
42.9 yrs
Drivers’ average income
$66,331

TX 105 carries through traffic: the median trip using it lasts 48.6 minutes, against 34.8 for the county.

4US 190Trunk road · 7,982vehicles706trucks · 8.8%
Road class
Trunk road
Congestion ratio
18.1%
Median trip time
39.3 min
Drivers’ median age
50.9 yrs
Drivers’ average income
$57,948

US 190 peaks at 7,982 vehicles a day, 2.5 times the county average; trucks are 8.8% of it, below the county-wide 11.5%.

5Byrd AvenuePrimary road · 7,513vehicles452trucks · 6.0%
Road class
Primary road
Congestion ratio
17.1%
Median trip time
33.5 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$55,888

Byrd Avenue carries 2.4 times the county average at its busiest, 452 of them trucks (6.0%, below the county-wide 11.5%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 59Trunk road · #1 by traffic30,707vehicles4,625trucks · 15.1%
2US-59Trunk road · #2 by traffic15,252vehicles2,055trucks · 13.5%
3TX 105Primary road · #3 by traffic9,607vehicles886trucks · 9.2%
4US 190Trunk road · #4 by traffic7,982vehicles706trucks · 8.8%
5Main StreetPrimary road · 6,635vehicles512trucks · 7.7%
Road class
Primary road
Congestion ratio
18.8%
Median trip time
24.1 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$69,093

Trips on Main Street are short, a median 24.1 minutes against 34.8 county-wide, so it mostly serves local errands and commutes.

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

San JacintoDepartment 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 San Jacinto County

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

Need segment-level traffic data?

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