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Mercer County, Pennsylvania Traffic Counts

This page delivers traffic analytics for Mercer County, Pennsylvania. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Mercer County, Pennsylvania among 687 road miles divided in 11,369 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 319 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

3,674

Trucks

14.3%

Average travel time

42.5 min

Congestion ratio

12.3%

Drivers’ average age

52.5 yrs

Drivers’ average income

$65,765

Our data indicates an estimated average traffic volume of 3,674 vehicles per day in Mercer County, Pennsylvania that results in 2,697,606 vehicle-miles traveled per day (≈985 million per year). The traffic stream is comprised of an average of 1 truck for every 7 vehicles. Typical time spent behind the wheel per trip is 42.5 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Pennsylvania state averages: Mercer sees 35% lower average daily traffic volume than the state average (3,674 vehicles per day against 5,617), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network that adds up to 2,697,606 vehicle-miles traveled per day (≈985 million per year), roughly 1.2% of Pennsylvania's statewide total. Journey times run 23% higher than the state level, at 42.5 minutes on average. At 26% lower than the state level, the 12.3% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. Mercer carries more traffic than 53% of counties in Pennsylvania. On travel time, Mercer runs longer than 97% of counties in Pennsylvania.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

10,584

Trucks

20.2%

Average travel time

51.4 min

Congestion ratio

21.9%

Drivers’ average age

52.9 yrs

Drivers’ average income

$66,096

A significant volume of traffic in Mercer County, Pennsylvania utilizes the highway network. The average highway carries 10,584 vehicles per day, 233% more than the average non-highway road in the same area, which carries 3,175 vehicles per day. That average covers 152 highway road miles divided in 767 segments (average segment length 1,044 ft), together carrying 1,547,115 vehicle-miles traveled per day (≈565 million per year). 62% of counties in Pennsylvania move less traffic on their highways. Trucks constitute 20.2% of highway traffic.

Analytical insight

At 20.2%, highway truck share is 28% higher than the state average, marking Mercer as a significant freight corridor - underscoring the importance of highway access for logistics operators. 62% of counties in Pennsylvania see a lower highway truck share than Mercer's 20.2%. By raw truck volume, Mercer carries more highway trucks than 59% of counties in Pennsylvania.
non-highway traffic icon

Non-highway traffic

Traffic

3,175

Trucks

6.4%

Average travel time

41.9 min

Congestion ratio

11.6%

Drivers’ average age

52.2 yrs

Drivers’ average income

$65,508

The non-highway road network in Mercer County, Pennsylvania supports a substantial volume of traffic. The average non-highway road carries 3,175 vehicles per day, 70% less than the average highway in the same area, which carries 10,584 vehicles per day. That average covers 535 non-highway road miles divided in 10,602 segments (average segment length 267 ft), together carrying 1,150,491 vehicle-miles traveled per day (≈420 million per year). Trucks constitute 6.4% of non-highway traffic.

Analytical insight

Non-highway roads carry a truck concentration that's 68% lower than the highway network. Non-highway congestion (11.6%) runs 26% lower than the state average, pointing to smoother local traffic flow. Overall, average travel time here is longer than 97% of counties in Pennsylvania. Trip origins here have higher average income than 30% of counties in Pennsylvania. 82% of counties in Pennsylvania have a younger driver population than Mercer.

Time-of-Day & Seasonal Patterns

Analytical insight

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

Traffic Flow Profile Comparison

Metric

Mercer

Pennsylvania
Average

Difference

Traffic

3,674

5,617

-34.6%

Truck % (Total Traffic)

14.3%

10.6%

+34.6%

Truck % (Highway)

20.2%

15.8%

+28.1%

Avg. Travel Time

42.5 min

34.6 min

+22.8%

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

PennsylvaniaDepartment of Transportation

Historical traffic pattern databases

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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