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Traffic heat map of Charles County, Maryland: 445 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Three Notch Road

Charles County, Maryland Traffic Counts

TrafficZoom tracks traffic on 445 road miles in Charles County, Maryland, divided into 11,151 segments averaging 211 ft. Its busiest road, Three Notch Road, carries 38,692 vehicles a day, 5.6 times the average road. 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 Charles County, Maryland

Traffic

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

vehicles per day6,854
Trucks

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

5.6%
Average travel time

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

32.4 min
Congestion ratio

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

17.9%
Drivers’ average age

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

46.6 yrs
Drivers’ average income

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

$124,526

A typical monitored road in Charles County, Maryland sees 6,854 vehicles per day, while its 445 miles of monitored roads together handle 3,168,989 vehicle-miles traveled per day (≈1.2 billion per year). Trucks are a smaller part of the mix than across Maryland: 5.6% against 7.5%.

Busier roads than 70% of counties in Maryland

Charles's average daily traffic volume is 11% lower than the state average - 6,854 vehicles per day against 7,693 - a critical factor for logistics and site planning. Network-wide, Charles accounts for about 2.3% of Maryland's statewide total of vehicle-miles. 70% of counties in Maryland see less traffic than Charles's 6,854 vehicles per day.

Journey times here (32.4 minutes on average) closely track the state level. Its average travel time of 32.4 minutes is shorter than 57% of counties in Maryland.

Congestion is somewhat lower than the state level, at a ratio of 17.9% (13% lower) - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Charles County, Maryland

Trafficvehicles per day21,704
Trucks6.2%
Average travel time34.8 min
Congestion ratio42.4%
Drivers’ average age46.6 yrs
Drivers’ average income$124,580

Travel in Charles County, Maryland splits roughly evenly, with about half of it (49% of vehicle-miles) on highways. The average highway carries 21,704 vehicles per day, 366% more than the average non-highway road in the same area, which carries 4,660 vehicles per day.

With 21% of the road miles (93 miles in 1,435 segments), highways punch above their length, carrying 1,562,768 vehicle-miles traveled per day (≈570 million per year).

That is more highway travel volume than 52% of counties in Maryland.

Lower highway truck share than 96% of counties in Maryland

Highway truck concentration here runs 36% lower than the state average, at 6.2%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

96% of counties in Maryland see a higher highway truck share than Charles's 6.2%. By raw truck volume, Charles carries fewer highway trucks than 87% of counties in Maryland.

non-highway traffic icon

Non-highway Traffic in Charles County, Maryland

Trafficvehicles per day4,660
Trucks5.0%
Average travel time32.1 min
Congestion ratio14.3%
Drivers’ average age46.5 yrs
Drivers’ average income$124,474

Travel in Charles County, Maryland splits roughly evenly, with about half of it (51% of vehicle-miles) on local roads. On the average non-highway road, that comes to 4,660 vehicles per day.

Spread over 352 miles and 9,716 segments, 79% of the road network, local roads carry a lighter load per mile: 1,606,221 vehicle-miles traveled per day (≈586 million per year). About 1 in 20 vehicles on non-highway roads is a truck (5.0%).

Drivers from higher-income areas than 78% of counties in Maryland

Compared to highways, non-highway routes see 20% fewer trucks by share.

Non-highway congestion (14.3%) runs 25% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have higher average income than 78% of counties in Maryland. The driver population here skews younger than 57% of counties in Maryland.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 71% 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:
May–July is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Charles County, Maryland, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Charles County vs. Maryland Traffic Comparison

Charles County's biggest difference from the Maryland average is its highway truck share, 36% below it. Its truck share is also 25% below.

MetricCharles CountyMaryland averageDifference
Traffic6,8547,693-10.9%
Truck % (Total Traffic)5.6%7.5%-25.1%
Truck % (Highway)6.2%9.8%-36.1%
Avg. Travel Time32.4 min34.0 min-4.6%

How Charles County compares

Charles County against nearby counties and cities

Nothing in this table sets Charles County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five. The same kind of road, simply more of it: traffic per road matches the areas around it while the network itself is larger.

Charles 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
Charles County6,8545.6%3,168,98932.4 min17.9%
King George County, Virginia4,9667.6%1,022,09234.4 min14.6%
Calvert County, Maryland5,3265.9%1,941,34828.5 min14.7%
Alexandria City, Virginia7,6016.2%1,376,11531.9 min16.6%
Stafford County, Virginia7,54110.0%5,239,41130.4 min15.6%
Maryland average7,6937.5%N/A34.0 min20.5%

Charles County ranked within Maryland

Truck share on highways places Charles County #23 of 24 in Maryland - the bottom quarter of the state.

Charles County ranked among 24 county-level areas in Maryland (1 = highest).
MeasureCharles CountyMaryland rank
Traffic volume (AADT)6,854#8 of 24
Highway vehicle-miles per day1,562,768#12 of 24
Truck share on highways6.2%#23 of 24
Highway trucks per day1,354#21 of 24
Average travel time32.4 min#14 of 24
Average driver income$124,526#6 of 24
Average driver age46.6 yrs#14 of 24

Charles County ranks #6 of 24 on average driver income but #23 of 24 on truck share on highways - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Charles County, Maryland

Traffic concentrates on a few corridors: the three busiest roads average 37,659 vehicles a day, against 6,854 on the average road in Charles County.

Three Notch Road is the busiest road, at 38,692 vehicles a day, 2,671 of them trucks (6.9%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Three Notch RoadTrunk road · 38,692vehicles2,671trucks · 6.9%
Road class
Trunk road
Median trip time
36.7 min
Drivers’ median age
46.0 yrs
Drivers’ average income
$126,117

At 5.6 times the county average, Three Notch Road draws drivers from neighborhoods averaging $126,117 in household income.

2Mattawoman Beantown RoadTrunk road · 37,369vehicles2,495trucks · 6.7%
Road class
Trunk road
Congestion ratio
44.6%
Median trip time
36.2 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$123,611

Travel on Mattawoman Beantown Road's busiest stretch runs 45% over free-flow time, against 18% across the county, so expect slower peak hours.

3Berry RoadTrunk road · 36,916vehicles1,461trucks · 4.0%
Road class
Trunk road
Congestion ratio
43.5%
Median trip time
28.4 min
Drivers’ median age
46.8 yrs
Drivers’ average income
$136,166

A main artery: Berry Road's busiest stretch carries 5.4 times the county average; trucks are 4.0% of it, below the county-wide 5.6%.

4Leonardtown RoadTrunk road · 35,486vehicles2,611trucks · 7.4%
Road class
Trunk road
Congestion ratio
45.3%
Median trip time
37.0 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$125,602

Leonardtown Road is one of the more congested roads here: trips take 45% longer than at free-flow speed, against 18% county-wide.

5Crain HighwayTrunk road · 31,424vehicles1,871trucks · 6.0%
Road class
Trunk road
Congestion ratio
39.4%
Median trip time
34.7 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$120,685

Crain Highway peaks at 31,424 vehicles a day, 4.6 times the county average; trucks are 6.0% of it, above the county-wide 5.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Three Notch RoadTrunk road · #1 by traffic38,692vehicles2,671trucks · 6.9%
2Leonardtown RoadTrunk road · #4 by traffic35,486vehicles2,611trucks · 7.4%
3Mattawoman Beantown RoadTrunk road · #2 by traffic37,369vehicles2,495trucks · 6.7%
4Crain HighwayTrunk road · #5 by traffic31,424vehicles1,871trucks · 6.0%
5Berry RoadTrunk road · #3 by traffic36,916vehicles1,461trucks · 4.0%
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

CharlesDepartment 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 Charles County

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

Need segment-level traffic data?

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