This page delivers traffic analytics for Williamson County, Texas. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Williamson County, Texas among 1,411 road miles divided in 26,567 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 280 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
8,688
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
7.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.3 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
18.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
41.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$116,623
Our data indicates an estimated average traffic volume of 8,688 vehicles per day in Williamson County, Texas that results in 14,018,154 vehicle-miles traveled per day (≈5.1 billion per year). The traffic stream is comprised of an average of 1 truck for every 13 vehicles. Typical time spent behind the wheel per trip is 31.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Texas state averages: Williamson sees 26% higher average daily traffic volume than the state average (8,688 vehicles per day against 6,895), suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, Williamson accounts for about 1.9% of Texas's statewide total, at 14,018,154 vehicle-miles traveled per day (≈5.1 billion per year). Journey times run 4% lower than the state level, at 31.3 minutes on average. At 11% higher than the state level, the 18.2% congestion ratio signals more pronounced congestion - crucial for traffic control improvement and logistics planning. Williamson carries more traffic than 96% of counties in Texas. 16% of counties in Texas have a shorter average travel time than Williamson's 31.3 minutes.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
22,512
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
11.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
38.1 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
35.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
41.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$108,265
A significant volume of traffic in Williamson County, Texas utilizes the highway network. The average highway carries 22,512 vehicles per day, 187% more than the average non-highway road in the same area, which carries 7,837 vehicles per day. That average covers 253 highway road miles divided in 1,540 segments (average segment length 867 ft), together carrying 6,603,966 vehicle-miles traveled per day (≈2.4 billion per year). 96% of counties in Texas move less traffic on their highways. Trucks constitute 11.2% of highway traffic.
Analytical insight
The concentration of trucks on highways (11.2%) is 18% lower than the state average for similar road classifications. This indicates Williamson serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. 19% of counties in Texas see a lower highway truck share than Williamson's 11.2%. Williamson's highway truck count is higher than 85% of counties in Texas, at roughly 2,524 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
7,837
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.6%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
17.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
41.9 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$120,563
The non-highway road network in Williamson County, Texas supports a substantial volume of traffic. The average non-highway road carries 7,837 vehicles per day, 65% less than the average highway in the same area, which carries 22,512 vehicles per day. That average covers 1,158 non-highway road miles divided in 25,027 segments (average segment length 244 ft), together carrying 7,414,189 vehicle-miles traveled per day (≈2.7 billion per year). Trucks constitute 4.6% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 59% lower than the highway network. The non-highway congestion ratio of 17.2% is 7% higher than the state level, suggesting slower local mobility than the state average. Overall, average travel time here is longer than 16% of counties in Texas. Trip origins here have higher average income than 98% of counties in Texas. Williamson's median driver age is higher than 17% of counties in Texas.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 4:00 PM–7:00 PM, with volumes reaching approximately 73% higher than the daily average.
Weekend traffic:
Weekend volumes run about 4% below weekday levels.
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +4% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average.
Analytical insight
In Williamson County, Texas, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +4% in high season.
Traffic Flow Profile Comparison
Metric
Williamson
Texas
Average
Difference
Traffic
8,688
6,895
+26.0%
Truck % (Total Traffic)
7.7%
9.8%
-21.2%
Truck % (Highway)
11.2%
13.8%
-18.5%
Avg. Travel Time
31.3 min
32.6 min
-4.1%
Frequently Asked Questions
The average daily traffic volume is calculated at 8,688 vehicles per day, providing a baseline for daily operations and site assessment.
Williamson's highway truck share of 11.2% is higher than 19% of counties in Texas.
Approximately 23% of highway traffic and 11% of non-highway traffic consists of vehicles whose trip originates outside Williamson County, Texas. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Traffic volumes are typically 4% higher during May–July. Volumes drop to their lowest levels in January, averaging 7,782 vehicles per day - a 10% decrease from the annual average.
Drivers on Williamson roads have a median age of 42 years, and the median household income of the neighborhoods trips originate from averages $116,623 - useful context for retail siting and customer profiling.
The average travel time for drivers is 31.3 minutes, offering a standard metric for commute and delivery route planning.
Trucks account for approximately 7.7% of the total traffic mix across all road types, with a significantly higher concentration of 11.2% on highways.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 4:00 PM and 7:00 PM in the evening - about 73% above the daily average.
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)
