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Traffic heat map of Mifflin County, Pennsylvania: 284 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 22 and US 322

Mifflin County, Pennsylvania Traffic Counts

How busy are the roads of Mifflin County, Pennsylvania? We measure 284 road miles, divided into 3,638 segments, with multi-sourced, cross-verified mobile and sensor data. Trips here are among the 5 longest of any county in Pennsylvania. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Mifflin County, Pennsylvania

Traffic

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

vehicles per day3,539
Trucks

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

13.1%
Average travel time

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

39.7 min
Congestion ratio

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

13.2%
Drivers’ average age

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

49.8 yrs
Drivers’ average income

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

$60,708

A typical monitored road in Mifflin County, Pennsylvania sees 3,539 vehicles per day, while its 284 miles of monitored roads together handle 1,001,028 vehicle-miles traveled per day (≈365 million per year). Trucks are 13.1% of traffic, more than the 10.6% across Pennsylvania.

Longer trips than 94% of counties in Pennsylvania

Mifflin's average daily traffic volume is 37% lower than the state average - 3,539 vehicles per day against 5,617 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.5% of Pennsylvania's statewide total. By volume, Mifflin's 3,539 vehicles per day outpaces 50% of counties in Pennsylvania.

At 39.7 minutes, the average travel time is 15% higher than the state level. Its average travel time of 39.7 minutes is longer than 94% of counties in Pennsylvania.

Congestion runs 20% lower than the state level, at a ratio of 13.2%, which means smoother traffic flow - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Mifflin County, Pennsylvania

Trafficvehicles per day6,885
Trucks18.1%
Average travel time52.0 min
Congestion ratio16.9%
Drivers’ average age47.0 yrs
Drivers’ average income$67,065

A little more than half of the driving in Mifflin County, Pennsylvania happens on highways: 58% of all vehicle-miles. The average highway carries 6,885 vehicles per day, 132% more than the average non-highway road in the same area, which carries 2,969 vehicles per day.

With 25% of the road miles (71 miles in 530 segments), highways punch above their length, carrying 578,661 vehicle-miles traveled per day (≈211 million per year).

Fewer highway trucks than 71% of counties in Pennsylvania

At 18.1%, highway truck share is 15% higher than the state average. The highway traffic mix is typical for Pennsylvania: neither freight- nor commuter-dominated.

Mifflin's highway truck share (18.1%) is higher than 56% of counties in Pennsylvania. Mifflin's highway truck count is lower than 71% of counties in Pennsylvania, at roughly 1,245 trucks per day.

non-highway traffic icon

Non-highway Traffic in Mifflin County, Pennsylvania

Trafficvehicles per day2,969
Trucks6.3%
Average travel time37.6 min
Congestion ratio12.6%
Drivers’ average age51.6 yrs
Drivers’ average income$56,811

Local roads carry a significant share of travel in Mifflin County, Pennsylvania: 42% of all vehicle-miles. On the average non-highway road, that comes to 2,969 vehicles per day.

Local roads make up 75% of the monitored road miles (213 miles in 3,108 segments) but carry less than their share of travel: 422,367 vehicle-miles traveled per day (≈154 million per year). About 1 in 16 vehicles on non-highway roads is a truck (6.3%).

Drivers from lower-income areas than 92% of counties in Pennsylvania

Compared to highways, non-highway routes see 65% fewer trucks by share.

The non-highway congestion ratio of 12.6% is 20% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 92% of counties in Pennsylvania. The driver population here skews younger than 53% of counties in Pennsylvania.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Mifflin County vs. Pennsylvania Traffic Comparison

Mifflin County's biggest difference from the Pennsylvania average is its average daily traffic per road, 37% below it. Its truck share, by contrast, is 23% above.

MetricMifflin CountyPennsylvania averageDifference
Traffic3,5395,617-37.0%
Truck % (Total Traffic)13.1%10.6%+23.2%
Truck % (Highway)18.1%15.8%+14.9%
Avg. Travel Time39.7 min34.6 min+14.8%

How Mifflin County compares

Trips in Mifflin County run longer than in any nearby county

Against the 4 nearest areas, Mifflin County sees 23.9% longer typical trips; it has the second busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Mifflin 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
Mifflin County3,53913.1%1,001,02839.7 min13.2%
Juniata County, Pennsylvania2,15416.1%668,82430.8 min8.6%
Huntingdon County, Pennsylvania2,63910.4%808,18930.9 min9.6%
Perry County, Pennsylvania2,79413.9%1,169,96733.3 min10.5%
Centre County, Pennsylvania4,97315.6%3,234,30933.2 min16.9%
Pennsylvania average5,61710.6%N/A34.6 min16.5%

Mifflin County ranked within Pennsylvania

Mifflin County sits in the top quarter of the Pennsylvania field on average travel time, at #5 of 67.

Mifflin County ranked among 67 county-level areas in Pennsylvania (1 = highest); measures without data in every county rank a smaller field, down to 64.
MeasureMifflin CountyPennsylvania rank
Traffic volume (AADT)3,539#34 of 67
Highway vehicle-miles per day578,661#46 of 64
Truck share on highways18.1%#29 of 64
Highway trucks per day1,245#46 of 64
Average travel time39.7 min#5 of 67
Average driver income$60,708#62 of 67
Average driver age49.8 yrs#36 of 67

Mifflin County ranks #5 of 67 on average travel time but #62 of 67 on average driver income - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Mifflin County, Pennsylvania

Traffic concentrates on a few corridors: the three busiest roads average 21,164 vehicles a day, against 3,539 on the average road in Mifflin County.

US 22 leads with 22,892 vehicles a day, 3,741 of them trucks (16.3%). US 322 carries the most trucks, 4,356 a day (20.9% of its traffic), although it ranks #2 for all traffic.

General Potter Highway carries longer journeys than most roads here, with a median trip of 66.4 minutes against 39.7 county-wide.

Freight stands out on General Potter Highway and US 322: trucks are 21.9% and 20.9% of the traffic there, against 13.1% county-wide.

General Potter Highway draws drivers from wealthier areas: their neighborhoods average $76,290 in household income, 26% above the county's $60,708.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 22Motorway · 22,892vehicles3,741trucks · 16.3%
Road class
Motorway
Congestion ratio
18.1%
Median trip time
58.6 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$63,652

Drivers on US 22 are on long journeys, a median 58.6 minutes against 39.7 county-wide: a through route more than a local street.

2US 322Motorway · 20,849vehicles4,356trucks · 20.9%
Road class
Motorway
Congestion ratio
22.8%
Median trip time
57.7 min
Drivers’ median age
43.8 yrs
Drivers’ average income
$68,494

US 322 carries 5.9 times the county average on its busiest stretch, where the median trip lasts 57.7 minutes.

3Lewistown NarrowsMotorway · 19,750vehicles4,039trucks · 20.4%
Road class
Motorway
Congestion ratio
24.3%
Median trip time
64.0 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$64,924

Lewistown Narrows carries through traffic: the median trip using it lasts 64.0 minutes, against 39.7 for the county.

4Valley StreetPrimary road · 19,569vehicles894trucks · 4.6%
Road class
Primary road
Congestion ratio
57.2%
Median trip time
41.6 min
Drivers’ median age
51.9 yrs
Drivers’ average income
$48,025

Travel on Valley Street's busiest stretch runs 57% over free-flow time, against 13% across the county, so expect slower peak hours.

5General Potter HighwayMotorway · 16,384vehicles3,582trucks · 21.9%
Road class
Motorway
Congestion ratio
17.5%
Median trip time
66.4 min
Drivers’ median age
42.3 yrs
Drivers’ average income
$76,290

At 4.6 times the county average, General Potter Highway draws drivers from neighborhoods averaging $76,290 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 322Motorway · #2 by traffic20,849vehicles4,356trucks · 20.9%
2Lewistown NarrowsMotorway · #3 by traffic19,750vehicles4,039trucks · 20.4%
3US 22Motorway · #1 by traffic22,892vehicles3,741trucks · 16.3%
4General Potter HighwayMotorway · #5 by traffic16,384vehicles3,582trucks · 21.9%
5Vietnam Veterans Memorial HighwayMotorway · 9,884vehicles901trucks · 9.1%
Road class
Motorway
Congestion ratio
10.8%
Median trip time
32.2 min
Drivers’ median age
52.4 yrs
Drivers’ average income
$66,353

The busiest stretch of Vietnam Veterans Memorial Highway carries 2.8 times the county average; trucks are 9.1% of it, below the county-wide 13.1%.

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

MifflinDepartment 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 Mifflin County

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

Need segment-level traffic data?

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