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Nantucket County, Massachusetts Traffic Counts

This page delivers traffic analytics for Nantucket County, Massachusetts. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Nantucket County, Massachusetts among 39 road miles divided in 1,163 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 176 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

Traffic

The average number of vehicles that travel each day over any road in the road network.

5,335

Trucks

Trucks

The percentage of the total traffic volume composed of heavy vehicles.

6.0%

Average travel time

Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

29.3 min

Congestion ratio

Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

18.2%

Drivers’ average age

Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

46.3 yrs

Drivers’ average income

Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$141,056

Our data indicates an estimated average traffic volume of 5,335 vehicles per day in Nantucket County, Massachusetts that results in 186,083 vehicle-miles traveled per day (≈67.9 million per year). The traffic stream is comprised of an average of 1 truck for every 17 vehicles. Typical time spent behind the wheel per trip is 29.3 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Massachusetts state averages: Nantucket's average daily traffic volume is 35% lower than the state average - 5,335 vehicles per day against 8,166 - suggesting less traffic load per road, a critical factor for logistics and site planning. In total volume terms, its road network carries 186,083 vehicle-miles traveled per day (≈67.9 million per year), about 0.1% of Massachusetts's statewide total. The average trip takes 29.3 minutes, 15% lower than the state level. The congestion ratio of 18.2% is 24% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning. Nantucket carries more traffic than 31% of counties in Massachusetts. 8% of counties in Massachusetts have a shorter average travel time than Nantucket's 29.3 minutes.

Highway vs. Non-Highway Traffic Analysis

Analytical insight

N/A
non-highway traffic icon

Non-highway traffic

Traffic

Traffic

The average number of vehicles that travel each day over any road in the road network.

5,335

Trucks

Trucks

The percentage of the total traffic volume composed of heavy vehicles.

6.0%

Average travel time

Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

29.3 min

Congestion ratio

Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

18.2%

Drivers’ average age

Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

46.3 yrs

Drivers’ average income

Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$141,056

The non-highway road network in Nantucket County, Massachusetts supports a substantial volume of traffic. The average non-highway road carries 5,335 vehicles per day. That average covers 39 non-highway road miles divided in 1,163 segments (average segment length 176 ft), together carrying 186,083 vehicle-miles traveled per day (≈67.9 million per year). Trucks constitute 6.0% of non-highway traffic.

Analytical insight

Non-highway congestion (18.2%) runs 21% lower than the state average, pointing to smoother local traffic flow. Nantucket's overall average travel time exceeds 8% of counties in Massachusetts. Nantucket also has the highest average driver income in Massachusetts among trip origins - $141,056. Nantucket's median driver age is higher than 23% of counties in Massachusetts.

Time-of-Day & Seasonal Patterns

Analytical insight

In Nantucket County, Massachusetts, the peak hour concentrates about 8% of the day's traffic.

Traffic Flow Profile Comparison

Metric

Nantucket

Massachusetts
Average

Difference

Traffic

5,335

8,166

-34.7%

Truck % (Total Traffic)

6.0%

6.9%

-14.1%

Truck % (Highway)

8.4%

Avg. Travel Time

29.3 min

34.4 min

-14.6%

How Nantucket County compares

Nantucket County against nearby areas

Set against the average of the 4 areas nearest to it, Nantucket County moves 3.9% of the total daily travel; it has the third busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Nantucket County and the 4 nearest county-level areas by centroid distance, with the Massachusetts average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Nantucket County5,3356.0%186,08329.3 min18.2%
Dukes County, Massachusetts4,8994.6%343,75428.7 min15.7%
Barnstable County, Massachusetts6,1365.2%5,934,94032.1 min18.6%
Plymouth County, Massachusetts7,8046.0%11,686,20332.7 min21.8%
Newport County, Rhode Island4,8266.4%1,178,04031.2 min14.9%
Massachusetts average8,1666.9%N/A34.4 min24.0%

Nantucket County ranked within Massachusetts

No other county-level area in Massachusetts records a higher average driver income than Nantucket County.

Where Nantucket County sits among Massachusetts's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
MeasureNantucket CountyMassachusetts rank
Traffic volume (AADT)5,335#10 of 14
Average travel time29.3 min#13 of 14
Average driver income$141,056#1 of 14
Average driver age46.3 yrs#11 of 14

Nantucket County ranks #1 of 14 on average driver income but #13 of 14 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

MassachusettsDepartment of Transportation

Historical traffic pattern databases

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
TrafficZoom methodology
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Data current as of:
Q3 2026

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Counties near Nantucket County

The same traffic breakdown for the areas closest to Nantucket County, Massachusetts.

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