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Traffic heat map of Delaware County, Pennsylvania: 624 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Delaware Expressway

Delaware County, Pennsylvania Traffic Counts

Traffic analytics for Delaware County, Pennsylvania, calculated from real-world mobile and sensor networks on 24,894 road segments (624 road miles, about 132 ft each). Its highways carry the lowest truck share of any county in Pennsylvania, 7.6%. 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
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Total Traffic Volume & Performance in Delaware County, Pennsylvania

Traffic

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

vehicles per day9,482
Trucks

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

6.2%
Average travel time

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

35.7 min
Congestion ratio

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

25.2%
Drivers’ average age

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

47.0 yrs
Drivers’ average income

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

$109,651

The average monitored road in Delaware County, Pennsylvania carries 9,482 vehicles per day. Across its 624 miles of monitored roads, that adds up to 6,862,360 vehicle-miles traveled per day (≈2.5 billion per year). Traffic here is mostly passenger cars: only 6.2% trucks, against 10.6% across Pennsylvania.

Busier roads than 97% of counties in Pennsylvania

At 9,482 vehicles per day, the average monitored road in Delaware carries 69% more traffic than the state average of 5,617, suggesting more demand on each road - prime passing trade for storefronts, with more competition for road space. Network-wide, Delaware accounts for about 3.1% of Pennsylvania's statewide total of vehicle-miles. Delaware carries more traffic than 97% of counties in Pennsylvania.

At 35.7 minutes, the average travel time matches the state level closely. Its average travel time of 35.7 minutes is longer than 79% of counties in Pennsylvania.

Congestion runs 52% higher than the state level, at a ratio of 25.2%, which means more pronounced congestion - expect markedly slower peak-hour deliveries and unreliable arrival times.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Delaware County, Pennsylvania

Trafficvehicles per day19,452
Trucks7.6%
Average travel time40.3 min
Congestion ratio37.1%
Drivers’ average age47.6 yrs
Drivers’ average income$120,324

Highways carry about half of all travel in Delaware County, Pennsylvania, 50% of vehicle-miles. The average highway carries 19,452 vehicles per day, 129% more than the average non-highway road in the same area, which carries 8,492 vehicles per day.

With 22% of the road miles (138 miles in 2,248 segments), highways punch above their length, carrying 3,419,991 vehicle-miles traveled per day (≈1.2 billion per year).

86% of counties in Pennsylvania move less traffic on their highways.

The lowest highway truck share of any county in Pennsylvania

The concentration of trucks on highways (7.6%) is 52% lower than the state average for similar road classifications. Highways here carry mainly commuter and local trips, with little through freight.

At 7.6%, Delaware's highway truck concentration is the lowest in Pennsylvania. Delaware's highway truck count is higher than 51% of counties in Pennsylvania, at roughly 1,471 trucks per day.

non-highway traffic icon

Non-highway Traffic in Delaware County, Pennsylvania

Trafficvehicles per day8,492
Trucks4.9%
Average travel time35.3 min
Congestion ratio24.0%
Drivers’ average age46.4 yrs
Drivers’ average income$104,675

Local roads carry about half of all travel in Delaware County, Pennsylvania, 50% of vehicle-miles. A typical local road sees 8,492 vehicles per day.

Local roads make up 78% of the monitored road miles (486 miles in 22,646 segments) but carry less than their share of travel: 3,442,370 vehicle-miles traveled per day (≈1.3 billion per year). The truck share on non-highway roads is 4.9%.

Drivers from higher-income areas than 95% of counties in Pennsylvania

Compared to highways, non-highway routes see 36% fewer trucks by share.

The non-highway congestion ratio of 24.0% is 53% higher than the state level, suggesting slower local mobility than the state average.

95% of counties in Pennsylvania see lower average driver income among trip origins than Delaware. Delaware's median driver age is lower than 94% of counties in Pennsylvania.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Delaware County vs. Pennsylvania Traffic Comparison

Delaware County's biggest difference from the Pennsylvania average is its average daily traffic per road, 69% above it. Its highway truck share, by contrast, is 52% below.

MetricDelaware CountyPennsylvania averageDifference
Traffic9,4825,617+68.8%
Truck % (Total Traffic)6.2%10.6%-41.6%
Truck % (Highway)7.6%15.8%-52.0%
Avg. Travel Time35.7 min34.6 min+3.2%

How Delaware County compares

Delaware County against nearby counties

Compared with its 4 closest neighbours, Delaware County is 34.3% more congested; it has the second busiest roads of the five.

Delaware County and the 4 nearest county-level areas by centroid distance, with the Pennsylvania average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Delaware County9,4826.2%6,862,36035.7 min25.2%
Philadelphia County, Pennsylvania11,5966.7%11,484,88037.5 min29.2%
Chester County, Pennsylvania5,4527.9%9,883,32433.2 min15.7%
Gloucester County, New Jersey6,76410.5%5,932,90032.0 min19.2%
Salem County, New Jersey3,36214.3%1,847,13331.9 min10.9%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Delaware County ranked within Pennsylvania

On average daily traffic volume, Delaware County is among the three highest county-level areas in Pennsylvania.

Delaware County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureDelaware CountyPennsylvania rank
Traffic volume (AADT)9,482#3 of 67
Highway vehicle-miles per day3,419,991#10 of 64
Truck share on highways7.6%#64 of 64
Highway trucks per day1,471#32 of 64
Average travel time35.7 min#15 of 67
Average driver income$109,651#4 of 67
Average driver age47.0 yrs#63 of 67

Delaware County ranks #3 of 67 on average daily traffic volume but #64 of 64 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 Delaware County, Pennsylvania

The three busiest roads in Delaware County average 68,991 vehicles a day, 7.3 times the county average of 9,482 across all its monitored roads.

Delaware Expressway is the busiest road, at 92,524 vehicles a day, 10,338 of them trucks (11.2%). It also carries the most trucks.

Freight stands out on Commodore Barry Bridge: trucks are 13.7% of the traffic there, against 6.2% county-wide.

Wilmington W Chester Pike draws drivers from wealthier areas: their neighborhoods average $158,941 in household income, 45% above the county's $109,651.

The truck ranking looks different from the traffic one, sharing just 2 of its 5 roads.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Delaware ExpresswayMotorway · 92,524vehicles10,338trucks · 11.2%
Road class
Motorway
Congestion ratio
58.6%
Median trip time
45.9 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$95,868

Delaware Expressway is one of the more congested roads here: trips take 59% longer than at free-flow speed, against 25% county-wide.

2Mid County ExpresswayMotorway · 75,779vehicles4,968trucks · 6.6%
Road class
Motorway
Congestion ratio
72.9%
Median trip time
48.5 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$124,451

Delays build on Mid County Expressway: its congestion ratio of 73% over free-flow time is well above the county's 25%.

3Wilmington W Chester PikeTrunk road · 38,670vehicles1,831trucks · 4.7%
Road class
Trunk road
Congestion ratio
58.3%
Median trip time
33.0 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$158,941

The busiest stretch of Wilmington W Chester Pike carries 4.1 times the county average; trucks are 4.7% of it, below the county-wide 6.2%.

4Media BypassMotorway · 35,405vehicles1,425trucks · 4.0%
Road class
Motorway
Congestion ratio
47.7%
Median trip time
35.4 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$121,885

On its busiest stretch, Media Bypass carries 3.7 times the county average; trucks are 4.0% of it, below the county-wide 6.2%.

5Wilmington PikeTrunk road · 34,271vehicles1,615trucks · 4.7%
Road class
Trunk road
Congestion ratio
49.2%
Median trip time
36.6 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$152,226

Wilmington Pike peaks at 34,271 vehicles a day, 3.6 times the county average; trucks are 4.7% of it, below the county-wide 6.2%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Delaware ExpresswayMotorway · #1 by traffic92,524vehicles10,338trucks · 11.2%
2Mid County ExpresswayMotorway · #2 by traffic75,779vehicles4,968trucks · 6.6%
3Commodore Barry BridgeMotorway · 26,293vehicles3,598trucks · 13.7%
Road class
Motorway
Congestion ratio
28.2%
Median trip time
38.5 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$120,607

Commodore Barry Bridge carries 2.8 times the county average at its busiest, 3,598 of them trucks (13.7%, above the county-wide 6.2%).

4Conchester HighwayMotorway · 28,068vehicles2,717trucks · 9.7%
Road class
Motorway
Congestion ratio
40.4%
Median trip time
40.3 min
Drivers’ median age
46.6 yrs
Drivers’ average income
$102,614

Conchester Highway carries 3.0 times the county average on its busiest stretch, where the median trip lasts 40.3 minutes.

5US 322Motorway · 24,783vehicles2,447trucks · 9.9%
Road class
Motorway
Congestion ratio
54.5%
Median trip time
39.8 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$108,813

At 2.6 times the county average, US 322 draws drivers from neighborhoods averaging $108,813 in household income.

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

DelawareDepartment 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 Delaware County

The same traffic breakdown for the areas closest to Delaware County, Pennsylvania.

Need segment-level traffic data?

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