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Traffic heat map of Kosciusko County, Indiana: 514 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Detroit Street and US 30

Kosciusko County, Indiana Traffic Counts

How busy are the roads of Kosciusko County, Indiana? We measure 514 road miles, divided into 7,930 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, Detroit Street, carries 23,991 vehicles a day, 7.0 times the average road. 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 Kosciusko County, Indiana

Traffic

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

vehicles per day3,422
Trucks

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

10.0%
Average travel time

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

36.8 min
Congestion ratio

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

9.8%
Drivers’ average age

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

46.0 yrs
Drivers’ average income

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

$77,063

Our data shows 3,422 vehicles per day on the average road in Kosciusko County, Indiana, and 1,694,853 vehicle-miles traveled per day (≈619 million per year) across its 514 miles of monitored roads. Trucks are a smaller part of the mix than across Indiana: 10.0% against 12.1%.

Longer trips than 85% of counties in Indiana

At 3,422 vehicles per day, the average monitored road in Kosciusko carries 40% less traffic than the state average of 5,704, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 1.1% of Indiana's statewide total of vehicle-miles. 56% of counties in Indiana see more traffic than Kosciusko's 3,422 vehicles per day.

The average trip takes 36.8 minutes, 10% higher than the state level. Its average travel time of 36.8 minutes is longer than 85% of counties in Indiana.

At 37% lower than the state level, the 9.8% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Kosciusko County, Indiana

Trafficvehicles per day10,478
Trucks18.2%
Average travel time54.2 min
Congestion ratio27.3%
Drivers’ average age45.7 yrs
Drivers’ average income$76,010

At 27% of vehicle-miles, highways carry a smaller share of the traffic in Kosciusko County, Indiana than local roads. The average highway carries 10,478 vehicles per day, 218% more than the average non-highway road in the same area, which carries 3,296 vehicles per day.

That comes from just 9% of the monitored road miles: 44 miles in 140 segments, carrying 450,916 vehicle-miles traveled per day (≈165 million per year).

A typical mix of freight and passenger traffic

Highway truck concentration here runs 7% lower than the state average, at 18.2%. The highway traffic mix is typical for Indiana: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 59% of counties in Indiana. By raw truck volume, Kosciusko carries fewer highway trucks than 60% of counties in Indiana.

non-highway traffic icon

Non-highway Traffic in Kosciusko County, Indiana

Trafficvehicles per day3,296
Trucks7.0%
Average travel time36.5 min
Congestion ratio9.5%
Drivers’ average age46.1 yrs
Drivers’ average income$77,252

Most travel in Kosciusko County, Indiana happens on local roads, 73% of all vehicle-miles. On the average non-highway road, that comes to 3,296 vehicles per day.

Local roads also make up about 91% of the monitored road miles: 470 miles in 7,790 segments, together carrying 1,243,937 vehicle-miles traveled per day (≈454 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.0%).

Younger drivers than 82% of counties in Indiana

Compared to highways, non-highway routes see 61% fewer trucks by share.

The non-highway congestion ratio of 9.5% is 37% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have higher average income than 67% of counties in Indiana. 82% of counties in Indiana have an older driver population than Kosciusko.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Kosciusko County vs. Indiana Traffic Comparison

Of the four measures, average daily traffic per road differs most: Kosciusko County runs 40% below the Indiana average. Its truck share is also 17% below.

MetricKosciusko CountyIndiana averageDifference
Traffic3,4225,704-40.0%
Truck % (Total Traffic)10.0%12.1%-17.2%
Truck % (Highway)18.2%19.6%-7.1%
Avg. Travel Time36.8 min33.5 min+9.7%

How Kosciusko County compares

Kosciusko County moves more traffic than any nearby county

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

Kosciusko 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
Kosciusko County3,42210.0%1,694,85336.8 min9.8%
Whitley County, Indiana2,67111.4%1,031,84733.2 min9.0%
Marshall County, Indiana3,50014.6%1,407,08534.1 min10.7%
Fulton County, Indiana2,84412.6%492,19732.2 min8.5%
Noble County, Indiana2,6098.3%997,29337.6 min11.2%
Indiana average5,70412.1%N/A33.5 min15.6%

Kosciusko County ranked within Indiana

Kosciusko County sits in the top quarter of the Indiana field on average travel time, at #15 of 92.

Kosciusko County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasureKosciusko CountyIndiana rank
Traffic volume (AADT)3,422#52 of 92
Highway vehicle-miles per day450,916#46 of 79
Truck share on highways18.2%#47 of 79
Highway trucks per day1,906#48 of 79
Average travel time36.8 min#15 of 92
Average driver income$77,063#31 of 92
Average driver age46.0 yrs#76 of 92

The two ends of this table sit far apart: #15 of 92 on average travel time, against #76 of 92 on average driver age.

Busiest roads in Kosciusko County, Indiana

On their busiest stretches, the three busiest roads in Kosciusko County carry 19,174 vehicles a day on average, 5.6 times the typical road in the county (3,422).

Detroit Street leads with 23,991 vehicles a day, 940 of them trucks (3.9%). US 30 carries the most trucks, 3,593 a day (21.4% of its traffic), although it ranks #2 for all traffic.

Trips using US 30 are long: a median of 62.7 minutes against 36.8 county-wide, the mark of a through route.

Trucks make up 21.4% of traffic on US 30 and 16.2% on Lake City Highway, against 10.0% across all roads in the county.

Detroit Street is busy with cars rather than freight: only 3.9% of its traffic is trucks, against 10.0% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Detroit StreetPrimary road · 23,991vehicles940trucks · 3.9%
Road class
Primary road
Congestion ratio
31.4%
Median trip time
44.5 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$69,955

Travel on Detroit Street's busiest stretch runs 31% over free-flow time, against 10% across the county, so expect slower peak hours.

2US 30Trunk road · 16,795vehicles3,593trucks · 21.4%
Road class
Trunk road
Congestion ratio
17.7%
Median trip time
62.7 min
Drivers’ median age
45.4 yrs
Drivers’ average income
$75,660

US 30 peaks at 16,795 vehicles a day, 4.9 times the county average; trucks are 21.4% of it, above the county-wide 10.0%.

3Lake City HighwayTrunk road · 16,736vehicles2,714trucks · 16.2%
Road class
Trunk road
Congestion ratio
29.3%
Median trip time
52.9 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$76,560

Lake City Highway carries through traffic: the median trip using it lasts 52.9 minutes, against 36.8 for the county.

4Buffalo StreetPrimary road · 14,650vehicles730trucks · 5.0%
Road class
Primary road
Congestion ratio
33.5%
Median trip time
34.4 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$77,120

Buffalo Street is one of the more congested roads here: trips take 34% longer than at free-flow speed, against 10% county-wide.

5SR 15Primary road · 14,511vehicles1,291trucks · 8.9%
Road class
Primary road
Congestion ratio
27.6%
Median trip time
34.8 min
Drivers’ median age
46.0 yrs
Drivers’ average income
$75,916

SR 15 carries 4.2 times the county average at its busiest, 1,291 of them trucks (8.9%, below the county-wide 10.0%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 30Trunk road · #2 by traffic16,795vehicles3,593trucks · 21.4%
2Lake City HighwayTrunk road · #3 by traffic16,736vehicles2,714trucks · 16.2%
3Higbee StreetPrimary road · 11,244vehicles1,516trucks · 13.5%
Road class
Primary road
Median trip time
39.8 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$78,512

Higbee Street carries 3.3 times the county average on its busiest stretch, where the median trip lasts 39.8 minutes.

4Main StreetPrimary road · 11,727vehicles1,451trucks · 12.4%
Road class
Primary road
Median trip time
40.9 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$78,636

At 3.4 times the county average, Main Street draws drivers from neighborhoods averaging $78,636 in household income.

5SR 15Primary road · #5 by traffic14,511vehicles1,291trucks · 8.9%
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

KosciuskoDepartment 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 Kosciusko County

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

Need segment-level traffic data?

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