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Traffic heat map of Jefferson County, Pennsylvania: 373 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 80 and Mahoning Street

Jefferson County, Pennsylvania Traffic Counts

Traffic analytics for Jefferson County, Pennsylvania, calculated from real-world mobile and sensor networks on 3,807 road segments (373 road miles, about 518 ft each). Its highways carry one of the top 3 truck shares of any county in Pennsylvania. 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 icon

Total Traffic Volume & Performance in Jefferson County, Pennsylvania

Traffic

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

vehicles per day2,946
Trucks

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

22.4%
Average travel time

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

32.9 min
Congestion ratio

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

9.9%
Drivers’ average age

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

51.9 yrs
Drivers’ average income

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

$60,856

The average monitored road in Jefferson County, Pennsylvania carries 2,946 vehicles per day. Across its 373 miles of monitored roads, that adds up to 1,162,775 vehicle-miles traveled per day (≈424 million per year). Freight weighs heavily here: trucks are 22.4% of traffic, against 10.6% across Pennsylvania.

Traffic 48% below the Pennsylvania average

Jefferson's average daily traffic volume is 48% lower than the state average - 2,946 vehicles per day against 5,617 - suggesting less traffic load per road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, Jefferson accounts for about 0.5% of Pennsylvania's statewide total of vehicle-miles. By volume, Jefferson's 2,946 vehicles per day trails 71% of counties in Pennsylvania.

At 32.9 minutes, the average travel time is 5% lower than the state level. 70% of counties in Pennsylvania have a longer average travel time than Jefferson's 32.9 minutes.

Congestion runs 40% lower than the state level, at a ratio of 9.9%, which means smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Jefferson County, Pennsylvania

Trafficvehicles per day6,950
Trucks31.8%
Average travel time42.2 min
Congestion ratio18.1%
Drivers’ average age51.8 yrs
Drivers’ average income$61,470

A little more than half of the driving in Jefferson County, Pennsylvania happens on highways: 60% of all vehicle-miles. The average highway carries 6,950 vehicles per day, 200% more than the average non-highway road in the same area, which carries 2,314 vehicles per day.

With 21% of the road miles (80 miles in 519 segments), highways punch above their length, carrying 700,482 vehicle-miles traveled per day (≈256 million per year).

A major freight corridor

Highway truck concentration here runs 102% higher than the state average, at 31.8%. That marks Jefferson as a major freight corridor, where highway access is what logistics operators compete on.

By truck concentration, highways here outrank 98% of counties in Pennsylvania. Jefferson's highway truck count is higher than 86% of counties in Pennsylvania, at roughly 2,212 trucks per day.

non-highway traffic icon

Non-highway Traffic in Jefferson County, Pennsylvania

Trafficvehicles per day2,314
Trucks8.2%
Average travel time31.4 min
Congestion ratio8.6%
Drivers’ average age52.0 yrs
Drivers’ average income$60,174

A significant share of driving in Jefferson County, Pennsylvania, 40% of vehicle-miles, happens on local roads. A typical local road sees 2,314 vehicles per day.

Spread over 294 miles and 3,288 segments, 79% of the road network, local roads carry a lighter load per mile: 462,293 vehicle-miles traveled per day (≈169 million per year). The truck share on non-highway roads is 8.2%.

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

Compared to highways, non-highway routes see 74% fewer trucks by share.

At 45% lower than the state level, the non-highway congestion ratio of 8.6% signals easier movement on local roads.

91% of counties in Pennsylvania see higher average driver income among trip origins than Jefferson. Jefferson's median driver age is higher than 71% of counties in Pennsylvania.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 64% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 24% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +17% versus the annual average.
Lowest month:
January is the quietest month, with volumes -36% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Jefferson County, Pennsylvania, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +17% in high season.

Jefferson County vs. Pennsylvania Traffic Comparison

The truck share sets Jefferson County apart: 111% above the Pennsylvania average. Its highway truck share is also 102% above.

MetricJefferson CountyPennsylvania averageDifference
Traffic2,9465,617-47.6%
Truck % (Total Traffic)22.4%10.6%+110.7%
Truck % (Highway)31.8%15.8%+102.0%
Avg. Travel Time32.9 min34.6 min-5.1%

How Jefferson County compares

Jefferson County against nearby counties

Compared with its 4 closest neighbours, Jefferson County runs 6.0 percentage points more truck traffic; it has the second busiest roads of the five. Traffic volume here matches the areas around it, but more of that traffic is trucks - a difference in what routes through, not in how much.

Jefferson 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
Jefferson County2,94622.4%1,162,77532.9 min9.9%
Elk County, Pennsylvania3,3729.3%460,58531.5 min10.9%
Clarion County, Pennsylvania2,89523.6%1,144,56031.9 min8.8%
Forest County, Pennsylvania1,23010.9%102,52140.9 min5.5%
Clearfield County, Pennsylvania2,69622.1%2,050,41932.1 min9.9%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Jefferson County ranked within Pennsylvania

Jefferson County sits in Pennsylvania's top three on truck share on highways.

Jefferson County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureJefferson CountyPennsylvania rank
Traffic volume (AADT)2,946#48 of 67
Highway vehicle-miles per day700,482#40 of 64
Truck share on highways31.8%#2 of 64
Highway trucks per day2,212#10 of 64
Average travel time32.9 min#47 of 67
Average driver income$60,856#61 of 67
Average driver age51.9 yrs#20 of 67

The two ends of this table sit far apart: #2 of 64 on truck share on highways, against #61 of 67 on average driver income.

Busiest roads in Jefferson County, Pennsylvania

On their busiest stretches, the three busiest roads in Jefferson County carry 15,745 vehicles a day on average, 5.3 times the typical road in the county (2,946).

I 80 is the busiest road, at 21,961 vehicles a day, 10,896 of them trucks (49.6%). It tops the truck ranking too, with the most trucks.

Trucks make up 49.6% of traffic on I 80, against 22.4% across all roads in the county.

Trips using I 80 are long: a median of 49.2 minutes against 32.9 county-wide, the mark of a through route.

Few trucks use Mahoning Street: 10.5% of its traffic, under half the county's 22.4%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 80Motorway · 21,961vehicles10,896trucks · 49.6%
Road class
Motorway
Congestion ratio
23.3%
Median trip time
49.2 min
Drivers’ median age
50.9 yrs
Drivers’ average income
$61,760

At 7.5 times the county average, I 80 draws drivers from neighborhoods averaging $61,760 in household income.

2Mahoning StreetTrunk road · 14,713vehicles1,540trucks · 10.5%
Road class
Trunk road
Congestion ratio
44.0%
Median trip time
30.6 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$53,401

Travel on Mahoning Street's busiest stretch runs 44% over free-flow time, against 10% across the county, so expect slower peak hours.

3Hampton AvenueTrunk road · 10,562vehicles1,125trucks · 10.7%
Road class
Trunk road
Median trip time
34.0 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$53,216

Hampton Avenue carries 3.6 times the county average on its busiest stretch, where the median trip lasts 34.0 minutes.

4Ridge AvenueTrunk road · 8,587vehicles1,125trucks · 13.1%
Road class
Trunk road
Median trip time
34.4 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$54,172

At 2.9 times the county average, Ridge Avenue draws drivers from neighborhoods averaging $54,172 in household income.

5Indiana StreetTrunk road · 8,517vehicles825trucks · 9.7%
Road class
Trunk road
Congestion ratio
23.9%
Median trip time
35.8 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$54,428

Indiana Street is one of the more congested roads here: trips take 24% longer than at free-flow speed, against 10% county-wide.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 80Motorway · #1 by traffic21,961vehicles10,896trucks · 49.6%
2Mahoning StreetTrunk road · #2 by traffic14,713vehicles1,540trucks · 10.5%
3Ridge AvenueTrunk road · #4 by traffic8,587vehicles1,125trucks · 13.1%
4Hampton AvenueTrunk road · #3 by traffic10,562vehicles1,125trucks · 10.7%
5Indiana StreetTrunk road · #5 by traffic8,517vehicles825trucks · 9.7%
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

JeffersonDepartment 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 Jefferson County

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

Need segment-level traffic data?

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