Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.

Get insights →
Traffic heat map of Dorchester County, Maryland: 217 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Sunburst Highway

Dorchester County, Maryland Traffic Counts

Traffic analytics for Dorchester County, Maryland, calculated from real-world mobile and sensor networks on 2,932 road segments (217 road miles, about 390 ft each). Trips here are among the 5 longest of any county in Maryland. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
Find my place
total traffic icon

Total Traffic Volume & Performance in Dorchester County, Maryland

Traffic

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

vehicles per day3,538
Trucks

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

8.8%
Average travel time

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

34.9 min
Congestion ratio

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

10.7%
Drivers’ average age

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

50.2 yrs
Drivers’ average income

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

$69,180

A typical monitored road in Dorchester County, Maryland sees 3,538 vehicles per day, while its 217 miles of monitored roads together handle 855,239 vehicle-miles traveled per day (≈312 million per year). At 8.8%, the truck share runs above the 7.5% across Maryland: about 1 in 11 vehicles.

Quieter roads than 87% of counties in Maryland

Dorchester sees 54% lower average daily traffic volume than the state average (3,538 vehicles per day against 7,693), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Dorchester accounts for about 0.6% of Maryland's statewide total of vehicle-miles. 87% of counties in Maryland see more traffic than Dorchester's 3,538 vehicles per day.

At 34.9 minutes, the average travel time matches the state level closely. Its average travel time of 34.9 minutes is longer than 83% of counties in Maryland.

The congestion ratio of 10.7% is 48% lower, pointing to smoother traffic flow than the state level - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Dorchester County, Maryland

Trafficvehicles per day14,101
Trucks10.0%
Average travel time51.0 min
Congestion ratio33.9%
Drivers’ average age50.0 yrs
Drivers’ average income$71,833

A little more than half of the driving in Dorchester County, Maryland happens on highways: 55% of all vehicle-miles. The average highway carries 14,101 vehicles per day, 395% more than the average non-highway road in the same area, which carries 2,847 vehicles per day.

That comes from just 17% of the monitored road miles: 37 miles in 180 segments, carrying 472,059 vehicle-miles traveled per day (≈172 million per year).

Fewer highway trucks than 65% of counties in Maryland

At 10.0%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for Maryland: neither freight- nor commuter-dominated.

52% of counties in Maryland see a higher highway truck share than Dorchester's 10.0%. 65% of counties in Maryland see more highway trucks per day than Dorchester's roughly 1,413.

non-highway traffic icon

Non-highway Traffic in Dorchester County, Maryland

Trafficvehicles per day2,847
Trucks7.2%
Average travel time33.8 min
Congestion ratio9.2%
Drivers’ average age50.5 yrs
Drivers’ average income$66,915

A significant share of driving in Dorchester County, Maryland, 45% of vehicle-miles, happens on local roads. A typical local road sees 2,847 vehicles per day.

Local roads make up 83% of the monitored road miles (179 miles in 2,752 segments) but carry less than their share of travel: 383,180 vehicle-miles traveled per day (≈140 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.2%).

Drivers from lower-income areas than 91% of counties in Maryland

The concentration of trucks on non-highway roads is 28% lower than on highways.

The non-highway congestion ratio of 9.2% is 52% lower than the state level, suggesting more efficient local mobility than the state average.

91% of counties in Maryland see higher average driver income among trip origins than Dorchester. 74% of counties in Maryland have a younger driver population than Dorchester.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Dorchester County, Maryland, the peak hour concentrates about 7% of the day's traffic.

Dorchester County vs. Maryland Traffic Comparison

Dorchester County's biggest difference from the Maryland average is its average daily traffic per road, 54% below it. Its truck share, by contrast, is 17% above.

MetricDorchester CountyMaryland averageDifference
Traffic3,5387,693-54.0%
Truck % (Total Traffic)8.8%7.5%+17.2%
Truck % (Highway)10.0%9.8%+2.7%
Avg. Travel Time34.9 min34.0 min+2.5%

How Dorchester County compares

Dorchester County against nearby counties

Compared with its 4 closest neighbours, Dorchester County is 28.5% less congested; it has the fourth busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Dorchester County and the 4 nearest county-level areas by centroid distance, with the Maryland average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Dorchester County3,5388.8%855,23934.9 min10.7%
Wicomico County, Maryland5,6326.2%2,419,38335.7 min16.3%
Somerset County, Maryland2,0419.3%693,74532.1 min7.7%
Talbot County, Maryland5,8238.9%1,401,04338.2 min19.6%
St. Mary's County, Maryland6,0035.3%2,184,01430.5 min16.3%
Maryland average7,6937.5%N/A34.0 min20.5%

Dorchester County ranked within Maryland

Average driver income places Dorchester County #22 of 24 in Maryland - the bottom quarter of the state.

Dorchester County ranked among 24 county-level areas in Maryland (1 = highest).
MeasureDorchester CountyMaryland rank
Traffic volume (AADT)3,538#21 of 24
Highway vehicle-miles per day472,059#21 of 24
Truck share on highways10.0%#13 of 24
Highway trucks per day1,413#16 of 24
Average travel time34.9 min#5 of 24
Average driver income$69,180#22 of 24
Average driver age50.2 yrs#7 of 24

Dorchester County ranks #5 of 24 on average travel time but #22 of 24 on average driver income - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Dorchester County, Maryland

On their busiest stretches, the three busiest roads in Dorchester County carry 29,808 vehicles a day on average, 8.4 times the typical road in the county (3,538).

Sunburst Highway is the busiest road, at 36,140 vehicles a day, 3,532 of them trucks (9.8%). It tops the truck ranking too, with the most trucks.

Senator Malkus Junior Bridge carries longer journeys than most roads here, with a median trip of 57.5 minutes against 34.9 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Sunburst HighwayTrunk road · 36,140vehicles3,532trucks · 9.8%
Road class
Trunk road
Congestion ratio
38.0%
Median trip time
51.1 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$69,448

Sunburst Highway is one of the more congested roads here: trips take 38% longer than at free-flow speed, against 11% county-wide.

2Senator Malkus Junior BridgeTrunk road · 28,966vehicles2,903trucks · 10.0%
Road class
Trunk road
Median trip time
57.5 min
Drivers’ median age
51.1 yrs
Drivers’ average income
$73,719

A main artery: Senator Malkus Junior Bridge's busiest stretch carries 8.2 times the county average; trucks are 10.0% of it, above the county-wide 8.8%.

3Ocean GatewayTrunk road · 24,319vehicles2,441trucks · 10.0%
Road class
Trunk road
Congestion ratio
31.6%
Median trip time
50.8 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$71,833

Ocean Gateway carries through traffic: the median trip using it lasts 50.8 minutes, against 34.9 for the county.

4Washington StreetSecondary road · 15,529vehicles676trucks · 4.3%
Road class
Secondary road
Congestion ratio
37.1%
Median trip time
36.6 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$56,375

Delays build on Washington Street: its congestion ratio of 37% over free-flow time is well above the county's 11%.

5Mount Holly RoadPrimary road · 8,989vehicles598trucks · 6.7%
Road class
Primary road
Congestion ratio
20.9%
Median trip time
28.9 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$67,082

The busiest stretch of Mount Holly Road carries 2.5 times the county average; trucks are 6.7% of it, below the county-wide 8.8%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Sunburst HighwayTrunk road · #1 by traffic36,140vehicles3,532trucks · 9.8%
2Senator Malkus Junior BridgeTrunk road · #2 by traffic28,966vehicles2,903trucks · 10.0%
3Ocean GatewayTrunk road · #3 by traffic24,319vehicles2,441trucks · 10.0%
4Washington StreetSecondary road · #4 by traffic15,529vehicles676trucks · 4.3%
5Mount Holly RoadPrimary road · #5 by traffic8,989vehicles598trucks · 6.7%
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

DorchesterDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Dorchester County

The same traffic breakdown for the areas closest to Dorchester County, Maryland.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.