
Total Traffic Volume & Performance in Strafford County, New Hampshire
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,752 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.6 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. | 21.2% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $95,589 |
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The average monitored road in Strafford County, New Hampshire carries 6,752 vehicles per day. Across its 386 miles of monitored roads, that adds up to 2,815,772 vehicle-miles traveled per day (≈1.0 billion per year). About 1 in 16 vehicles is a truck, in line with New Hampshire (7.0%).
The longest trips of any county in New Hampshire
At 6,752 vehicles per day, the average monitored road in Strafford carries 19% more traffic than the state average of 5,669, suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, Strafford accounts for about 8.6% of New Hampshire's statewide total of vehicle-miles. Strafford carries more traffic than 89% of counties in New Hampshire.
The average trip takes 35.6 minutes, 9% higher than the state level. Strafford additionally records the highest average travel time of any county in New Hampshire - 35.6 minutes.
Congestion runs 21% higher than the state level, at a ratio of 21.2%, which means more pronounced congestion - relevant for traffic control and delivery planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Strafford County, New Hampshire
| Traffic | vehicles per day14,918 |
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| Trucks | 7.3% |
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| Average travel time | 38.2 min |
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| Congestion ratio | 37.4% |
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| Drivers’ average age | 47.4 yrs |
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| Drivers’ average income | $97,197 |
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Highways carry about half of all travel in Strafford County, New Hampshire, 52% of vehicle-miles. The average highway carries 14,918 vehicles per day, 164% more than the average non-highway road in the same area, which carries 5,654 vehicles per day.
With 24% of the road miles (94 miles in 1,210 segments), highways punch above their length, carrying 1,461,573 vehicle-miles traveled per day (≈533 million per year).
That is more highway travel volume than 67% of counties in New Hampshire.
Lower highway truck share than 89% of counties in New Hampshire
Highway truck concentration here runs 16% lower than the state average, at 7.3%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 89% of counties in New Hampshire. 67% of counties in New Hampshire see fewer highway trucks per day than Strafford's roughly 1,088.

Non-highway Traffic in Strafford County, New Hampshire
| Traffic | vehicles per day5,654 |
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| Trucks | 5.1% |
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| Average travel time | 35.2 min |
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| Congestion ratio | 19.0% |
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| Drivers’ average age | 45.4 yrs |
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| Drivers’ average income | $94,328 |
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Local roads carry about half of all travel in Strafford County, New Hampshire, 48% of vehicle-miles. The average non-highway road carries 5,654 vehicles per day.
Local roads make up 76% of the monitored road miles (292 miles in 9,003 segments) but carry less than their share of travel: 1,354,200 vehicle-miles traveled per day (≈494 million per year). Trucks make up 5.1% of non-highway traffic, about 1 in 20 vehicles.
The youngest drivers of any county in New Hampshire
Non-highway roads carry a truck concentration that's 30% lower than the highway network.
Non-highway congestion (19.0%) runs 18% higher than the state average, pointing to slower local traffic flow.
Trip origins here have higher average income than 67% of counties in New Hampshire. At 46 years, Strafford's median driver age is the lowest in New Hampshire.