
Total Traffic Volume & Performance in Barnstable County, Massachusetts
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,136 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 5.2% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.1 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. | 18.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 56.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $97,843 |
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Our data shows 6,136 vehicles per day on the average road in Barnstable County, Massachusetts, and 5,934,940 vehicle-miles traveled per day (≈2.2 billion per year) across its 812 miles of monitored roads. Trucks are a smaller part of the mix than across Massachusetts: 5.2% against 6.9%.
Shorter trips than 85% of counties in Massachusetts
Barnstable's average daily traffic volume is 25% lower than the state average - 6,136 vehicles per day against 8,166 - suggesting less traffic load per road - a factor worth weighing in site selection and logistics planning. Across the whole network, that travel is about 4.4% of Massachusetts's statewide total. By volume, Barnstable's 6,136 vehicles per day trails 62% of counties in Massachusetts.
At 32.1 minutes, the average travel time is 7% lower than the state level. On travel time, Barnstable runs shorter than 85% of counties in Massachusetts.
The congestion ratio of 18.6% is 22% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Barnstable County, Massachusetts
| Traffic | vehicles per day18,933 |
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| Trucks | 5.5% |
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| Average travel time | 40.7 min |
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| Congestion ratio | 43.5% |
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| Drivers’ average age | 57.1 yrs |
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| Drivers’ average income | $98,896 |
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Highways carry a significant share of travel in Barnstable County, Massachusetts: 43% of all vehicle-miles. The average highway carries 18,933 vehicles per day, 248% more than the average non-highway road in the same area, which carries 5,435 vehicles per day.
With 17% of the road miles (138 miles in 1,362 segments), highways punch above their length, carrying 2,548,149 vehicle-miles traveled per day (≈930 million per year).
The lowest highway truck share of any county in Massachusetts
Highway truck concentration here runs 34% lower than the state average, at 5.5%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
At 5.5%, Barnstable's highway truck concentration is the lowest in Massachusetts. By raw volume, Barnstable carries the lowest number of highway trucks in Massachusetts - roughly 1,021 trucks per day.

Non-highway Traffic in Barnstable County, Massachusetts
| Traffic | vehicles per day5,435 |
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| Trucks | 5.0% |
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| Average travel time | 31.6 min |
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| Congestion ratio | 17.3% |
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| Drivers’ average age | 56.8 yrs |
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| Drivers’ average income | $97,372 |
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Local roads carry more than half of all travel in Barnstable County, Massachusetts (57% of vehicle-miles). The average non-highway road carries 5,435 vehicles per day.
Local roads make up 83% of the monitored road miles (675 miles in 24,882 segments) but carry less than their share of travel: 3,386,791 vehicle-miles traveled per day (≈1.2 billion per year). Trucks make up 5.0% of non-highway traffic, about 1 in 20 vehicles.
The oldest drivers of any county in Massachusetts
Non-highway roads carry a truck concentration that's 10% lower than the highway network.
At 25% lower than the state level, the non-highway congestion ratio of 17.3% signals easier movement on local roads.
69% of counties in Massachusetts see higher average driver income among trip origins than Barnstable. At 57 years, Barnstable's median driver age is the highest in Massachusetts.