
Total Traffic Volume & Performance in Polk County, Texas
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day4,988 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 12.6% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 33.2 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. | 12.2% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.0 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $62,682 |
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Our data shows 4,988 vehicles per day on the average road in Polk County, Texas, and 1,966,898 vehicle-miles traveled per day (≈718 million per year) across its 427 miles of monitored roads. Trucks are 12.6% of traffic, more than the 9.8% across Texas.
Busier roads than 78% of counties in Texas
Polk sees 28% lower average daily traffic volume than the state average (4,988 vehicles per day against 6,895), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of Texas's statewide total of vehicle-miles. By volume, Polk's 4,988 vehicles per day outpaces 78% of counties in Texas.
The average trip takes 33.2 minutes, on par with the state level. On travel time, Polk runs shorter than 64% of counties in Texas.
Congestion runs 26% lower than the state level, at a ratio of 12.2%, which means smoother traffic flow - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Polk County, Texas
| Traffic | vehicles per day12,964 |
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| Trucks | 14.2% |
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| Average travel time | 42.8 min |
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| Congestion ratio | 23.7% |
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| Drivers’ average age | 47.6 yrs |
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| Drivers’ average income | $63,145 |
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Highways carry most of the traffic in Polk County, Texas: 74% of all vehicle-miles. The average highway carries 12,964 vehicles per day, 507% more than the average non-highway road in the same area, which carries 2,135 vehicles per day.
Highways make up 29% of the monitored road miles (122 miles, 920 segments), so they carry more than their share: 1,449,535 vehicle-miles traveled per day (≈529 million per year).
That is more highway travel volume than 77% of counties in Texas.
A typical mix of freight and passenger traffic
The concentration of trucks on highways (14.2%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Texas: neither freight- nor commuter-dominated.
Polk's highway truck share (14.2%) is lower than 57% of counties in Texas. Polk's highway truck count is higher than 62% of counties in Texas, at roughly 1,847 trucks per day.

Non-highway Traffic in Polk County, Texas
| Traffic | vehicles per day2,135 |
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| Trucks | 7.8% |
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| Average travel time | 29.8 min |
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| Congestion ratio | 8.1% |
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| Drivers’ average age | 50.5 yrs |
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| Drivers’ average income | $61,936 |
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At 26% of vehicle-miles, local roads carry a smaller share of the traffic in Polk County, Texas than highways. The average non-highway road carries 2,135 vehicles per day.
Spread over 305 miles and 2,572 segments, 71% of the road network, local roads carry a lighter load per mile: 517,363 vehicle-miles traveled per day (≈189 million per year). Trucks make up 7.8% of non-highway traffic, about 1 in 13 vehicles.
Drivers from lower-income areas than 75% of counties in Texas
Non-highway roads carry a truck concentration that's 45% lower than the highway network.
Non-highway congestion (8.1%) runs 50% lower than the state average, pointing to smoother local traffic flow.
Polk's average driver income is lower than 75% of counties in Texas. Polk's median driver age is higher than 71% of counties in Texas.