
Total Traffic Volume & Performance in Gillespie County, Texas
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,972 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 10.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.5 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 9.3% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 57.1 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $74,328 |
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The average monitored road in Gillespie County, Texas carries 3,972 vehicles per day. Across its 300 miles of monitored roads, that adds up to 869,985 vehicle-miles traveled per day (≈318 million per year). Trucks are 10.6% of traffic, close to the 9.8% across Texas.
Shorter trips than 72% of counties in Texas
At 3,972 vehicles per day, the average monitored road in Gillespie carries 42% less traffic than the state average of 6,895, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Gillespie accounts for about 0.1% of Texas's statewide total of vehicle-miles. By volume, Gillespie's 3,972 vehicles per day outpaces 69% of counties in Texas.
Journey times here (32.5 minutes on average) closely track the state level. 72% of counties in Texas have a longer average travel time than Gillespie's 32.5 minutes.
At 43% lower than the state level, the 9.3% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Gillespie County, Texas
| Traffic | vehicles per day6,759 |
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| Trucks | 13.5% |
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| Average travel time | 35.3 min |
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| Congestion ratio | 9.3% |
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| Drivers’ average age | 56.9 yrs |
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| Drivers’ average income | $75,567 |
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A little more than half of the driving in Gillespie County, Texas happens on highways: 58% of all vehicle-miles. The average highway carries 6,759 vehicles per day, 154% more than the average non-highway road in the same area, which carries 2,666 vehicles per day.
With 30% of the road miles (89 miles in 875 segments), highways punch above their length, carrying 505,575 vehicle-miles traveled per day (≈185 million per year).
Fewer highway trucks than 65% of counties in Texas
Highway truck concentration here (13.5%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for Texas: neither freight- nor commuter-dominated.
By truck concentration, highways here trail 62% of counties in Texas. Gillespie's highway truck count is lower than 65% of counties in Texas, at roughly 912 trucks per day.

Non-highway Traffic in Gillespie County, Texas
| Traffic | vehicles per day2,666 |
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| Trucks | 6.6% |
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| Average travel time | 31.2 min |
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| Congestion ratio | 9.3% |
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| Drivers’ average age | 57.2 yrs |
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| Drivers’ average income | $73,179 |
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Local roads carry a significant share of travel in Gillespie County, Texas: 42% of all vehicle-miles. On the average non-highway road, that comes to 2,666 vehicles per day.
Spread over 211 miles and 1,867 segments, 70% of the road network, local roads carry a lighter load per mile: 364,410 vehicle-miles traveled per day (≈133 million per year). Trucks make up 6.6% of non-highway traffic, about 1 in 15 vehicles.
Older drivers than 98% of counties in Texas
The concentration of trucks on non-highway roads is 51% lower than on highways.
Non-highway congestion (9.3%) runs 42% lower than the state average, pointing to smoother local traffic flow.
Gillespie's average driver income is higher than 66% of counties in Texas. 98% of counties in Texas have a younger driver population than Gillespie.