Need segment-level traffic data?

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

Get insights →
Traffic heat map of St. Joseph County, Indiana: 804 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Saint Joseph Valley Parkway

St. Joseph County, Indiana Traffic Counts

Traffic analytics for St. Joseph County, Indiana, calculated from real-world mobile and sensor networks on 22,415 road segments (804 road miles, about 189 ft each). It ranks among the top 5 counties in Indiana for average daily traffic. 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
Find my place
total traffic icon

Total Traffic Volume & Performance in St. Joseph County, Indiana

Traffic

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

vehicles per day6,991
Trucks

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

12.8%
Average travel time

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

34.9 min
Congestion ratio

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

16.1%
Drivers’ average age

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

44.4 yrs
Drivers’ average income

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

$78,502

A typical monitored road in St. Joseph County, Indiana sees 6,991 vehicles per day, while its 804 miles of monitored roads together handle 5,428,162 vehicle-miles traveled per day (≈2.0 billion per year). About 1 in 8 vehicles is a truck, in line with Indiana (12.1%).

Busier roads than 96% of counties in Indiana

St. Joseph sees 23% higher average daily traffic volume than the state average (6,991 vehicles per day against 5,704), suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, St. Joseph accounts for about 3.4% of Indiana's statewide total of vehicle-miles. 96% of counties in Indiana see less traffic than St. Joseph's 6,991 vehicles per day.

The average trip takes 34.9 minutes, on par with the state level. 70% of counties in Indiana have a shorter average travel time than St. Joseph's 34.9 minutes.

At 16.1%, the congestion ratio matches the state level closely.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in St. Joseph County, Indiana

Trafficvehicles per day11,502
Trucks26.0%
Average travel time45.7 min
Congestion ratio26.6%
Drivers’ average age47.5 yrs
Drivers’ average income$80,634

A significant share of driving in St. Joseph County, Indiana, 37% of vehicle-miles, happens on highways. The average highway carries 11,502 vehicles per day, 67% more than the average non-highway road in the same area, which carries 6,884 vehicles per day.

With 20% of the road miles (158 miles in 521 segments), highways punch above their length, carrying 2,027,208 vehicle-miles traveled per day (≈740 million per year).

By highway travel volume, St. Joseph outranks 94% of counties in Indiana.

Higher highway truck share than 77% of counties in Indiana

Highway truck concentration here runs 33% higher than the state average, at 26.0%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

77% of counties in Indiana see a lower highway truck share than St. Joseph's 26.0%. 71% of counties in Indiana see fewer highway trucks per day than St. Joseph's roughly 2,992.

non-highway traffic icon

Non-highway Traffic in St. Joseph County, Indiana

Trafficvehicles per day6,884
Trucks4.9%
Average travel time34.7 min
Congestion ratio15.9%
Drivers’ average age44.1 yrs
Drivers’ average income$77,809

A little more than half of the driving in St. Joseph County, Indiana happens on local roads: 63% of all vehicle-miles. On the average non-highway road, that comes to 6,884 vehicles per day.

Spread over 646 miles and 21,894 segments, 80% of the road network, local roads carry a lighter load per mile: 3,400,954 vehicle-miles traveled per day (≈1.2 billion per year). The truck share on non-highway roads is 4.9%.

Younger drivers than 95% of counties in Indiana

Compared to highways, non-highway routes see 81% fewer trucks by share.

At 15.9%, the non-highway congestion ratio matches the state level closely.

St. Joseph's average driver income is higher than 74% of counties in Indiana. 95% of counties in Indiana have an older driver population than St. Joseph.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

St. Joseph County vs. Indiana Traffic Comparison

St. Joseph County's biggest difference from the Indiana average is its highway truck share, 33% above it. Its average daily traffic per road is also 23% above.

MetricSt. Joseph CountyIndiana averageDifference
Traffic6,9915,704+22.6%
Truck % (Total Traffic)12.8%12.1%+5.6%
Truck % (Highway)26.0%19.6%+32.8%
Avg. Travel Time34.9 min33.5 min+4.2%

How St. Joseph County compares

St. Joseph County has the busiest roads among its nearby counties

Set against the average of the 4 areas nearest to it, St. Joseph County carries 58.2% more traffic on a typical road and is 33.9% 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.

St. Joseph 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
St. Joseph County6,99112.8%5,428,16234.9 min16.1%
Marshall County, Indiana3,50014.6%1,407,08534.1 min10.7%
Elkhart County, Indiana5,75614.3%5,039,78933.0 min14.7%
LaPorte County, Indiana5,14120.2%3,639,59534.0 min12.4%
Cass County, Michigan3,2836.6%1,073,02132.9 min10.4%
Indiana average5,70412.1%N/A33.5 min15.6%

St. Joseph County ranked within Indiana

St. Joseph County sits in the top quarter of the Indiana field on average daily traffic volume, at #5 of 92.

St. Joseph County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasureSt. Joseph CountyIndiana rank
Traffic volume (AADT)6,991#5 of 92
Highway vehicle-miles per day2,027,208#6 of 79
Truck share on highways26.0%#19 of 79
Highway trucks per day2,992#24 of 79
Average travel time34.9 min#27 of 92
Average driver income$78,502#25 of 92
Average driver age44.4 yrs#87 of 92

The two ends of this table sit far apart: #5 of 92 on average daily traffic volume, against #87 of 92 on average driver age.

Busiest roads in St. Joseph County, Indiana

Traffic concentrates on a few corridors: the three busiest roads average 27,735 vehicles a day, against 6,991 on the average road in St. Joseph County.

Saint Joseph Valley Parkway is the busiest road, at 31,243 vehicles a day, 6,554 of them trucks (21.0%). Indiana Toll Road carries the most trucks, 10,986 a day (41.7% of its traffic), although it ranks #2 for all traffic.

Trucks make up 41.7% of traffic on Indiana Toll Road and 21.8% on US 31, against 12.8% across all roads in the county.

Trips using Indiana Toll Road are long: a median of 72.2 minutes against 34.9 county-wide, the mark of a through route.

Main Street is busy with cars rather than freight: only 3.7% of its traffic is trucks, against 12.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Saint Joseph Valley ParkwayMotorway · 31,243vehicles6,554trucks · 21.0%
Road class
Motorway
Congestion ratio
31.7%
Median trip time
42.1 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$77,033

Trucks make up 21.0% of Saint Joseph Valley Parkway's traffic, against 12.8% across the county, so freight weighs heavily here.

2Indiana Toll RoadMotorway · 26,368vehicles10,986trucks · 41.7%
Road class
Motorway
Congestion ratio
31.1%
Median trip time
72.2 min
Drivers’ median age
46.0 yrs
Drivers’ average income
$85,634

At 3.8 times the county average, Indiana Toll Road draws drivers from neighborhoods averaging $85,634 in household income.

3Main StreetSecondary road · 25,593vehicles947trucks · 3.7%
Road class
Secondary road
Congestion ratio
30.1%
Median trip time
39.1 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$76,698

The busiest stretch of Main Street carries 3.7 times the county average; trucks are 3.7% of it, below the county-wide 12.8%.

4Bend AvenuePrimary road · 23,170vehicles818trucks · 3.5%
Road class
Primary road
Congestion ratio
34.0%
Median trip time
34.2 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$73,120

Travel on Bend Avenue's busiest stretch runs 34% over free-flow time, against 16% across the county, so expect slower peak hours.

5Eddy StreetPrimary road · 22,208vehicles748trucks · 3.4%
Road class
Primary road
Congestion ratio
32.9%
Median trip time
38.5 min
Drivers’ median age
43.9 yrs
Drivers’ average income
$65,537

Eddy Street is one of the more congested roads here: trips take 33% longer than at free-flow speed, against 16% county-wide.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Indiana Toll RoadMotorway · #2 by traffic26,368vehicles10,986trucks · 41.7%
2Saint Joseph Valley ParkwayMotorway · #1 by traffic31,243vehicles6,554trucks · 21.0%
3US 31Motorway · 21,128vehicles4,607trucks · 21.8%
Road class
Motorway
Congestion ratio
21.6%
Median trip time
51.0 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$74,680

Drivers on US 31 are on long journeys, a median 51.0 minutes against 34.9 county-wide: a through route more than a local street.

4Western AvenueTrunk road · 19,376vehicles2,716trucks · 14.0%
Road class
Trunk road
Congestion ratio
24.0%
Median trip time
45.8 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$79,451

On its busiest stretch, Western Avenue carries 2.8 times the county average; trucks are 14.0% of it, above the county-wide 12.8%.

5SR 2Trunk road · 11,410vehicles1,886trucks · 16.5%
Road class
Trunk road
Congestion ratio
16.5%
Median trip time
48.7 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$82,586

SR 2 carries through traffic: the median trip using it lasts 48.7 minutes, against 34.9 for the county.

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

St. JosephDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near St. Joseph County

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

Need segment-level traffic data?

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