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Traffic heat map of Centre County, Pennsylvania: 708 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 99 and I 80

Centre County, Pennsylvania Traffic Counts

Our Centre County, Pennsylvania traffic data covers 8,991 road segments over 708 road miles, with an average segment of just 416 ft. Its drivers are the youngest of any county in Pennsylvania, a median 37 years. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Centre County, Pennsylvania

Traffic

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

vehicles per day4,973
Trucks

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

15.6%
Average travel time

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

33.2 min
Congestion ratio

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

16.9%
Drivers’ average age

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

36.8 yrs
Drivers’ average income

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

$77,416

A typical monitored road in Centre County, Pennsylvania sees 4,973 vehicles per day, while its 708 miles of monitored roads together handle 3,234,309 vehicle-miles traveled per day (≈1.2 billion per year). Trucks are 15.6% of traffic, more than the 10.6% across Pennsylvania.

Busier roads than 74% of counties in Pennsylvania

Centre's average daily traffic volume is 11% lower than the state average - 4,973 vehicles per day against 5,617 - a critical factor for logistics and site planning. Network-wide, Centre accounts for about 1.5% of Pennsylvania's statewide total of vehicle-miles. Centre carries more traffic than 74% of counties in Pennsylvania.

At 33.2 minutes, the average travel time matches the state level closely. 58% of counties in Pennsylvania have a longer average travel time than Centre's 33.2 minutes.

The congestion ratio of 16.9% is in line with the state level.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Centre County, Pennsylvania

Trafficvehicles per day10,297
Trucks23.6%
Average travel time47.4 min
Congestion ratio26.5%
Drivers’ average age41.5 yrs
Drivers’ average income$76,628

Highways carry about half of all travel in Centre County, Pennsylvania, 53% of vehicle-miles. The average highway carries 10,297 vehicles per day, 127% more than the average non-highway road in the same area, which carries 4,545 vehicles per day.

With 25% of the road miles (174 miles in 668 segments), highways punch above their length, carrying 1,720,127 vehicle-miles traveled per day (≈628 million per year).

By highway travel volume, Centre outranks 68% of counties in Pennsylvania.

Higher highway truck share than 78% of counties in Pennsylvania

At 23.6%, highway truck share is 50% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.

By truck concentration, highways here outrank 78% of counties in Pennsylvania. 68% of counties in Pennsylvania see fewer highway trucks per day than Centre's roughly 2,426.

non-highway traffic icon

Non-highway Traffic in Centre County, Pennsylvania

Trafficvehicles per day4,545
Trucks6.5%
Average travel time32.1 min
Congestion ratio16.2%
Drivers’ average age35.3 yrs
Drivers’ average income$77,859

Local roads carry about half of all travel in Centre County, Pennsylvania, 47% of vehicle-miles. On the average non-highway road, that comes to 4,545 vehicles per day.

Local roads make up 75% of the monitored road miles (534 miles in 8,323 segments) but carry less than their share of travel: 1,514,182 vehicle-miles traveled per day (≈553 million per year). Trucks make up 6.5% of non-highway traffic, about 1 in 15 vehicles.

The youngest drivers of any county in Pennsylvania

The concentration of trucks on non-highway roads is 72% lower than on highways.

At 16.2%, the non-highway congestion ratio matches the state level closely.

Centre's average driver income is higher than 65% of counties in Pennsylvania. Centre has the lowest median driver age in Pennsylvania - 37 years.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Centre County vs. Pennsylvania Traffic Comparison

The highway truck share sets Centre County apart: 50% above the Pennsylvania average. Its truck share is also 46% above.

MetricCentre CountyPennsylvania averageDifference
Traffic4,9735,617-11.5%
Truck % (Total Traffic)15.6%10.6%+46.2%
Truck % (Highway)23.6%15.8%+49.6%
Avg. Travel Time33.2 min34.6 min-4.0%

How Centre County compares

Centre County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Centre County carries 75.3% more traffic on a typical road and is 53.4% more congested; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Centre 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
Centre County4,97315.6%3,234,30933.2 min16.9%
Clinton County, Pennsylvania2,95322.3%1,126,24739.1 min12.4%
Mifflin County, Pennsylvania3,53913.1%1,001,02839.7 min13.2%
Clearfield County, Pennsylvania2,69622.1%2,050,41932.1 min9.9%
Juniata County, Pennsylvania2,15416.1%668,82430.8 min8.6%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Centre County ranked within Pennsylvania

No county-level area in Pennsylvania records a lower average driver age than Centre County.

Centre County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureCentre CountyPennsylvania rank
Traffic volume (AADT)4,973#18 of 67
Highway vehicle-miles per day1,720,127#21 of 64
Truck share on highways23.6%#15 of 64
Highway trucks per day2,426#21 of 64
Average travel time33.2 min#39 of 67
Average driver income$77,416#24 of 67
Average driver age36.8 yrs#67 of 67

Centre County ranks #15 of 64 on truck share on highways but #67 of 67 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Centre County, Pennsylvania

Traffic concentrates on a few corridors: the three busiest roads average 23,863 vehicles a day, against 4,973 on the average road in Centre County.

I 99 leads with 26,180 vehicles a day, 3,119 of them trucks (11.9%). I 80 carries the most trucks, 8,184 a day (35.0% of its traffic), although it ranks #2 for all traffic.

I 80 carries longer journeys than most roads here, with a median trip of 62.4 minutes against 33.2 county-wide.

Freight stands out on I 80: trucks are 35.0% of the traffic there, against 15.6% county-wide.

Few trucks use Atherton Street: 4.8% of its traffic, under half the county's 15.6%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 99Motorway · 26,180vehicles3,119trucks · 11.9%
Road class
Motorway
Congestion ratio
29.4%
Median trip time
43.9 min
Drivers’ median age
42.4 yrs
Drivers’ average income
$78,858

At 5.3 times the county average, I 99 draws drivers from neighborhoods averaging $78,858 in household income.

2I 80Motorway · 23,395vehicles8,184trucks · 35.0%
Road class
Motorway
Congestion ratio
25.7%
Median trip time
62.4 min
Drivers’ median age
37.9 yrs
Drivers’ average income
$72,779

I 80 carries 4.7 times the county average at its busiest, 8,184 of them trucks (35.0%, above the county-wide 15.6%).

3Atherton StreetPrimary road · 22,014vehicles1,053trucks · 4.8%
Road class
Primary road
Congestion ratio
32.8%
Median trip time
32.7 min
Drivers’ median age
34.5 yrs
Drivers’ average income
$59,115

Delays build on Atherton Street: its congestion ratio of 33% over free-flow time is well above the county's 17%.

4Mount Nittany ExpresswayMotorway · 17,461vehicles2,248trucks · 12.9%
Road class
Motorway
Congestion ratio
20.8%
Median trip time
45.7 min
Drivers’ median age
38.1 yrs
Drivers’ average income
$87,978

Mount Nittany Expressway carries 3.5 times the county average on its busiest stretch, where the median trip lasts 45.7 minutes.

5Boal AvenueTrunk road · 16,362vehicles2,986trucks · 18.2%
Road class
Trunk road
Congestion ratio
42.8%
Median trip time
53.0 min
Drivers’ median age
38.3 yrs
Drivers’ average income
$86,877

Travel on Boal Avenue's busiest stretch runs 43% over free-flow time, against 17% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 80Motorway · #2 by traffic23,395vehicles8,184trucks · 35.0%
2I 99Motorway · #1 by traffic26,180vehicles3,119trucks · 11.9%
3Boal AvenueTrunk road · #5 by traffic16,362vehicles2,986trucks · 18.2%
4General Potter HighwayTrunk road · 13,852vehicles2,801trucks · 20.2%
Road class
Trunk road
Congestion ratio
32.3%
Median trip time
60.5 min
Drivers’ median age
38.2 yrs
Drivers’ average income
$81,699

Drivers on General Potter Highway are on long journeys, a median 60.5 minutes against 33.2 county-wide: a through route more than a local street.

5Mount Nittany ExpresswayMotorway · #4 by traffic17,461vehicles2,248trucks · 12.9%
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

CentreDepartment 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 Centre County

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

Need segment-level traffic data?

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