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Traffic heat map of Porter County, Indiana: 519 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 94 and SR 49

Porter County, Indiana Traffic Counts

It is one of the top 5 counties in Indiana for highway travel volume. This page breaks down traffic in Porter County, Indiana across 519 miles of monitored roads split into 11,731 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Porter County, Indiana

Traffic

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

vehicles per day6,120
Trucks

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

15.2%
Average travel time

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

31.9 min
Congestion ratio

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

15.7%
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.

$88,703

Our data shows 6,120 vehicles per day on the average road in Porter County, Indiana, and 4,367,356 vehicle-miles traveled per day (≈1.6 billion per year) across its 519 miles of monitored roads. At 15.2%, the truck share runs above the 12.1% across Indiana: about 1 in 7 vehicles.

Busier roads than 88% of counties in Indiana

Porter's average daily traffic volume is 7% higher than the state average - 6,120 vehicles per day against 5,704. Network-wide, Porter accounts for about 2.7% of Indiana's statewide total of vehicle-miles. By volume, Porter's 6,120 vehicles per day outpaces 88% of counties in Indiana.

At 31.9 minutes, the average travel time matches the state level closely. Its average travel time of 31.9 minutes is shorter than 84% of counties in Indiana.

Congestion here (15.7%) closely tracks the state level.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Porter County, Indiana

Trafficvehicles per day16,001
Trucks22.8%
Average travel time50.5 min
Congestion ratio28.6%
Drivers’ average age47.3 yrs
Drivers’ average income$89,952

Travel in Porter County, Indiana splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 16,001 vehicles per day, 185% more than the average non-highway road in the same area, which carries 5,612 vehicles per day.

With 24% of the road miles (126 miles in 574 segments), highways punch above their length, carrying 2,376,413 vehicle-miles traveled per day (≈867 million per year).

By highway travel volume, that ranks Porter in the top 5 counties in Indiana.

More highway trucks than 79% of counties in Indiana

Highway truck concentration here runs 16% higher than the state average, at 22.8%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

By truck concentration, highways here outrank 59% of counties in Indiana. By raw truck volume, Porter carries more highway trucks than 79% of counties in Indiana.

non-highway traffic icon

Non-highway Traffic in Porter County, Indiana

Trafficvehicles per day5,612
Trucks6.0%
Average travel time31.0 min
Congestion ratio15.0%
Drivers’ average age46.8 yrs
Drivers’ average income$88,086

Travel in Porter County, Indiana splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. On the average non-highway road, that comes to 5,612 vehicles per day.

Local roads make up 76% of the monitored road miles (393 miles in 11,157 segments) but carry less than their share of travel: 1,990,943 vehicle-miles traveled per day (≈727 million per year). Trucks make up 6.0% of non-highway traffic, about 1 in 17 vehicles.

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

Non-highway roads carry a truck concentration that's 74% lower than the highway network.

At 15.0%, the non-highway congestion ratio matches the state level closely.

95% of counties in Indiana see lower average driver income among trip origins than Porter. 73% of counties in Indiana have an older driver population than Porter.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Porter County vs. Indiana Traffic Comparison

The truck share sets Porter County apart: 25% above the Indiana average. Its highway truck share is also 16% above.

MetricPorter CountyIndiana averageDifference
Traffic6,1205,704+7.3%
Truck % (Total Traffic)15.2%12.1%+25.2%
Truck % (Highway)22.8%19.6%+16.4%
Avg. Travel Time31.9 min33.5 min-4.8%

How Porter County compares

Porter County against nearby counties

Nothing in this table sets Porter County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Porter County and the 4 nearest county-level areas by centroid distance, with the Indiana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Porter County6,12015.2%4,367,35631.9 min15.7%
Lake County, Indiana9,03110.7%10,261,24434.8 min18.8%
LaPorte County, Indiana5,14120.2%3,639,59534.0 min12.4%
Starke County, Indiana3,35614.3%458,95033.8 min7.9%
Jasper County, Indiana4,33726.5%1,696,13433.1 min11.2%
Indiana average5,70412.1%N/A33.5 min15.6%

Porter County ranked within Indiana

Highway travel volume places Porter County #5 of 79 in Indiana - the top quarter of the state.

Porter County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasurePorter CountyIndiana rank
Traffic volume (AADT)6,120#12 of 92
Highway vehicle-miles per day2,376,413#5 of 79
Truck share on highways22.8%#33 of 79
Highway trucks per day3,648#17 of 79
Average travel time31.9 min#77 of 92
Average driver income$88,703#6 of 92
Average driver age47.0 yrs#67 of 92

The two ends of this table sit far apart: #5 of 79 on highway travel volume, against #77 of 92 on average travel time.

Busiest roads in Porter County, Indiana

On their busiest stretches, the three busiest roads in Porter County carry 41,853 vehicles a day on average, 6.8 times the typical road in the county (6,120).

I 94 is the busiest road, at 61,587 vehicles a day, 13,960 of them trucks (22.7%). That is 91% more than the next road, SR 49 (32,309). It also carries the most trucks.

Trips using Indiana Toll Road are long: a median of 70.0 minutes against 31.9 county-wide, the mark of a through route.

Freight stands out on Indiana Toll Road: trucks are 42.9% of the traffic there, against 15.2% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 94Motorway · 61,587vehicles13,960trucks · 22.7%
Road class
Motorway
Congestion ratio
39.8%
Median trip time
63.0 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$82,369

I 94 carries through traffic: the median trip using it lasts 63.0 minutes, against 31.9 for the county.

2SR 49Motorway · 32,309vehicles4,070trucks · 12.6%
Road class
Motorway
Congestion ratio
32.8%
Median trip time
38.6 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$90,821

Travel on SR 49's busiest stretch runs 33% over free-flow time, against 16% across the county, so expect slower peak hours.

3SR 2Motorway · 31,664vehicles2,420trucks · 7.6%
Road class
Motorway
Median trip time
35.7 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$94,909

SR 2 is a trunk route for the county, carrying 5.2 times the county average on its busiest stretch; trucks are 7.6% of it, below the county-wide 15.2%.

4Indiana Toll RoadMotorway · 29,884vehicles12,805trucks · 42.9%
Road class
Motorway
Congestion ratio
32.7%
Median trip time
70.0 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$86,050

Indiana Toll Road peaks at 29,884 vehicles a day, 4.9 times the county average; trucks are 42.9% of it, above the county-wide 15.2%.

5Morthland DriveTrunk road · 26,970vehicles2,016trucks · 7.5%
Road class
Trunk road
Congestion ratio
25.6%
Median trip time
37.5 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$102,059

Morthland Drive carries 4.4 times the county average at its busiest, 2,016 of them trucks (7.5%, below the county-wide 15.2%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 94Motorway · #1 by traffic61,587vehicles13,960trucks · 22.7%
2Indiana Toll RoadMotorway · #4 by traffic29,884vehicles12,805trucks · 42.9%
3SR 49Motorway · #2 by traffic32,309vehicles4,070trucks · 12.6%
4US 30Trunk road · 20,156vehicles3,528trucks · 17.5%
Road class
Trunk road
Congestion ratio
21.8%
Median trip time
46.6 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$83,907

Drivers on US 30 are on long journeys, a median 46.6 minutes against 31.9 county-wide: a through route more than a local street.

5SR 2Motorway · #3 by traffic31,664vehicles2,420trucks · 7.6%
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

PorterDepartment 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 Porter County

The same traffic breakdown for the areas closest to Porter County, Indiana.

Need segment-level traffic data?

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