
Total Traffic Volume & Performance in Coos County, New Hampshire
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,146 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.3 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. | 9.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 54.8 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $61,993 |
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A typical monitored road in Coos County, New Hampshire sees 3,146 vehicles per day, while its 341 miles of monitored roads together handle 842,467 vehicle-miles traveled per day (≈308 million per year). At 8.2%, the truck share runs above the 7.0% across New Hampshire: about 1 in 12 vehicles.
The quietest roads of any county in New Hampshire
Coos sees 45% lower average daily traffic volume than the state average (3,146 vehicles per day against 5,669), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Network-wide, Coos accounts for about 2.6% of New Hampshire's statewide total of vehicle-miles. At 3,146 vehicles per day, Coos posts the lowest average traffic volume in New Hampshire.
Journey times run 8% higher than the state level, at 35.3 minutes on average. Its average travel time of 35.3 minutes is longer than 89% of counties in New Hampshire.
Congestion runs 44% lower than the state level, at a ratio of 9.8%, which means smoother traffic flow - fewer delays make delivery windows more reliable.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Coos County, New Hampshire
| Traffic | vehicles per day4,790 |
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| Trucks | 9.2% |
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| Average travel time | 36.0 min |
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| Congestion ratio | 12.0% |
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| Drivers’ average age | 54.5 yrs |
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| Drivers’ average income | $67,458 |
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Highways carry a smaller share of travel in Coos County, New Hampshire, 23% of vehicle-miles; most driving happens on local roads. The average highway carries 4,790 vehicles per day, 76% more than the average non-highway road in the same area, which carries 2,722 vehicles per day.
With 15% of the road miles (50 miles in 1,120 segments), highways punch above their length, carrying 194,056 vehicle-miles traveled per day (≈70.8 million per year).
The fewest highway trucks of any county in New Hampshire
At 9.2%, highway truck share is 6% higher than the state average. The highway traffic mix is typical for New Hampshire: neither freight- nor commuter-dominated.
67% of counties in New Hampshire see a lower highway truck share than Coos's 9.2%. By raw volume, Coos carries the lowest number of highway trucks in New Hampshire - roughly 359 trucks per day.

Non-highway Traffic in Coos County, New Hampshire
| Traffic | vehicles per day2,722 |
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| Trucks | 7.9% |
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| Average travel time | 35.1 min |
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| Congestion ratio | 9.3% |
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| Drivers’ average age | 55.1 yrs |
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| Drivers’ average income | $60,885 |
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Most travel in Coos County, New Hampshire happens on local roads, 77% of all vehicle-miles. On the average non-highway road, that comes to 2,722 vehicles per day.
Their share of road miles is similar, 85% (291 miles in 4,349 segments), carrying 648,411 vehicle-miles traveled per day (≈237 million per year). The truck share on non-highway roads is 7.9%.
The lowest driver income of any county in New Hampshire
Non-highway roads carry a truck concentration that's 14% lower than the highway network.
Non-highway congestion (9.3%) runs 42% lower than the state average, pointing to smoother local traffic flow.
Coos also has the lowest average driver income in New Hampshire among trip origins - $61,993. 89% of counties in New Hampshire have a younger driver population than Coos.