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Traffic heat map of Dukes County, Massachusetts: 76 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Edgartown Road and Beach Road

Dukes County, Massachusetts Traffic Counts

TrafficZoom tracks traffic on 76 road miles in Dukes County, Massachusetts, divided into 1,857 segments averaging 216 ft. Trips here are the shortest of any county in Massachusetts, a median 28.7 minutes. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Dukes County, Massachusetts

Traffic

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

vehicles per day4,899
Trucks

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

4.6%
Average travel time

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

28.7 min
Congestion ratio

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

15.7%
Drivers’ average age

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

55.0 yrs
Drivers’ average income

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

$119,233

The average monitored road in Dukes County, Massachusetts carries 4,899 vehicles per day. Across its 76 miles of monitored roads, that adds up to 343,754 vehicle-miles traveled per day (≈125 million per year). About 1 in 22 vehicles is a truck, fewer than the 1 in 14 across Massachusetts.

The shortest trips of any county in Massachusetts

Dukes's average daily traffic volume is 40% lower than the state average - 4,899 vehicles per day against 8,166 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 0.3% of Massachusetts's statewide total of vehicle-miles. 85% of counties in Massachusetts see more traffic than Dukes's 4,899 vehicles per day.

Journey times run 17% lower than the state level, at 28.7 minutes on average. At 28.7 minutes, Dukes also has the lowest average travel time in Massachusetts.

Congestion runs 35% lower than the state level, at a ratio of 15.7%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 12:00 PM–3:00 PM, with volumes reaching approximately 105% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 17% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +55% versus the annual average.
Lowest month:
January is the quietest month, with volumes -37% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Dukes County, Massachusetts, the peak hour concentrates about 9% of the day's traffic, and there is a strong seasonal swing of +55% in high season.

Dukes County vs. Massachusetts Traffic Comparison

Of the four measures, average daily traffic per road differs most: Dukes County runs 40% below the Massachusetts average. Its truck share is also 33% below.

MetricDukes CountyMassachusetts averageDifference
Traffic4,8998,166-40.0%
Truck % (Total Traffic)4.6%6.9%-33.2%
Avg. Travel Time28.7 min34.4 min-16.5%

How Dukes County compares

Dukes County has the lowest truck share of its nearby counties

Set against the average of the 4 areas nearest to it, Dukes County moves 5.6% of the total daily travel; it has the fourth busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Dukes 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
Dukes County4,8994.6%343,75428.7 min15.7%
Nantucket County, Massachusetts5,3356.0%186,08329.3 min18.2%
Newport County, Rhode Island4,8266.4%1,178,04031.2 min14.9%
Plymouth County, Massachusetts7,8046.0%11,686,20332.7 min21.8%
Bristol County, Massachusetts7,4946.5%11,722,47334.5 min21.0%
Massachusetts average8,1666.9%N/A34.4 min24.0%

Dukes County ranked within Massachusetts

On average driver age, Dukes County is among the three highest county-level areas in Massachusetts.

Dukes County ranked among 14 county-level areas in Massachusetts (1 = highest).
MeasureDukes CountyMassachusetts rank
Traffic volume (AADT)4,899#12 of 14
Average travel time28.7 min#14 of 14
Average driver income$119,233#6 of 14
Average driver age55.0 yrs#2 of 14

Dukes County ranks #2 of 14 on average driver age but #14 of 14 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Dukes County, Massachusetts

On their busiest stretches, the three busiest roads in Dukes County carry 13,108 vehicles a day on average, 2.7 times the typical road in the county (4,899).

Edgartown Road leads with 15,742 vehicles a day, 601 of them trucks (3.8%). It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Edgartown RoadSecondary road · 15,742vehicles601trucks · 3.8%
Road class
Secondary road
Congestion ratio
42.5%
Median trip time
27.3 min
Drivers’ median age
55.4 yrs
Drivers’ average income
$103,304

Travel on Edgartown Road's busiest stretch runs 43% over free-flow time, against 16% across the county, so expect slower peak hours.

2Beach RoadSecondary road · 12,204vehicles494trucks · 4.0%
Road class
Secondary road
Congestion ratio
38.9%
Median trip time
28.1 min
Drivers’ median age
55.4 yrs
Drivers’ average income
$109,468

Beach Road is one of the more congested roads here: trips take 39% longer than at free-flow speed, against 16% county-wide.

3Upper Main StreetSecondary road · 11,379vehicles512trucks · 4.5%
Road class
Secondary road
Congestion ratio
31.3%
Median trip time
27.7 min
Drivers’ median age
55.2 yrs
Drivers’ average income
$109,298

The busiest stretch of Upper Main Street carries 2.3 times the county average; trucks are 4.5% of it, in line with the county-wide 4.6%.

4Edgartown - Vineyard Haven RoadSecondary road · 10,191vehicles422trucks · 4.2%
Road class
Secondary road
Congestion ratio
27.8%
Median trip time
29.0 min
Drivers’ median age
55.0 yrs
Drivers’ average income
$114,656

On its busiest stretch, Edgartown - Vineyard Haven Road carries 2.1 times the county average; trucks are 4.2% of it, below the county-wide 4.6%.

5Edgartown-Vineyard Haven RoadSecondary road · 8,507vehicles377trucks · 4.4%
Road class
Secondary road
Congestion ratio
23.8%
Median trip time
26.1 min
Drivers’ median age
55.0 yrs
Drivers’ average income
$109,268

At 74% more than the county average, Edgartown-Vineyard Haven Road draws drivers from neighborhoods averaging $109,268 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Edgartown RoadSecondary road · #1 by traffic15,742vehicles601trucks · 3.8%
2Upper Main StreetSecondary road · #3 by traffic11,379vehicles512trucks · 4.5%
3Beach RoadSecondary road · #2 by traffic12,204vehicles494trucks · 4.0%
4Edgartown - Vineyard Haven RoadSecondary road · #4 by traffic10,191vehicles422trucks · 4.2%
5Edgartown-Vineyard Haven RoadSecondary road · #5 by traffic8,507vehicles377trucks · 4.4%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

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

DukesDepartment of Transportation

Demographic Baseline for O-D Modeling

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

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Counties near Dukes County

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

Need segment-level traffic data?

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