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 DeKalb County, Indiana: 305 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 69 and 7th Street

DeKalb County, Indiana Traffic Counts

Traffic analytics for DeKalb County, Indiana, calculated from real-world mobile and sensor networks on 4,684 road segments (305 road miles, about 344 ft each). Trips here are the shortest of any county in Indiana, a median 28.6 minutes. 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 DeKalb County, Indiana

Traffic

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

vehicles per day3,796
Trucks

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

11.8%
Average travel time

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

28.6 min
Congestion ratio

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

11.2%
Drivers’ average age

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

47.4 yrs
Drivers’ average income

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

$76,147

Our data shows 3,796 vehicles per day on the average road in DeKalb County, Indiana, and 1,442,071 vehicle-miles traveled per day (≈526 million per year) across its 305 miles of monitored roads. Trucks are 11.8% of traffic, close to the 12.1% across Indiana.

The shortest trips of any county in Indiana

At 3,796 vehicles per day, the average monitored road in DeKalb carries 33% less traffic than the state average of 5,704, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, DeKalb accounts for about 0.9% of Indiana's statewide total of vehicle-miles. By volume, DeKalb's 3,796 vehicles per day outpaces 54% of counties in Indiana.

The average trip takes 28.6 minutes, 15% lower than the state level. At 28.6 minutes, DeKalb also has the lowest average travel time in Indiana.

Congestion runs 28% lower than the state level, at a ratio of 11.2%, which means 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 DeKalb County, Indiana

Trafficvehicles per day13,863
Trucks17.1%
Average travel time44.4 min
Congestion ratio27.3%
Drivers’ average age47.3 yrs
Drivers’ average income$78,168

Travel in DeKalb County, Indiana splits roughly evenly, with about half of it (46% of vehicle-miles) on highways. The average highway carries 13,863 vehicles per day, 275% more than the average non-highway road in the same area, which carries 3,692 vehicles per day.

Yet highways are only 13% of the road network, 41 miles in 48 segments, so each mile of them is 3.4 times as busy as the average road mile.

54% of counties in Indiana move less traffic on their highways.

A typical mix of freight and passenger traffic

The concentration of trucks on highways (17.1%) is 13% lower than the state average for similar road classifications. The highway traffic mix is typical for Indiana: neither freight- nor commuter-dominated.

64% of counties in Indiana see a higher highway truck share than DeKalb's 17.1%. By raw truck volume, DeKalb carries more highway trucks than 59% of counties in Indiana.

non-highway traffic icon

Non-highway Traffic in DeKalb County, Indiana

Trafficvehicles per day3,692
Trucks7.4%
Average travel time28.5 min
Congestion ratio11.0%
Drivers’ average age47.4 yrs
Drivers’ average income$74,962

Travel in DeKalb County, Indiana splits roughly evenly, with about half of it (54% of vehicle-miles) on local roads. A typical local road sees 3,692 vehicles per day.

Spread over 264 miles and 4,636 segments, 87% of the road network, local roads carry a lighter load per mile: 782,469 vehicle-miles traveled per day (≈286 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.4%).

Local roads carry 57% fewer trucks by share than highways

Non-highway roads carry a truck concentration that's 57% lower than the highway network.

At 27% lower than the state level, the non-highway congestion ratio of 11.0% signals easier movement on local roads.

Trip origins here have higher average income than 60% of counties in Indiana. 62% of counties in Indiana have an older driver population than DeKalb.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In DeKalb County, Indiana, the peak hour concentrates about 8% of the day's traffic.

DeKalb County vs. Indiana Traffic Comparison

DeKalb County's biggest difference from the Indiana average is its average daily traffic per road, 33% below it.

MetricDeKalb CountyIndiana averageDifference
Traffic3,7965,704-33.4%
Truck % (Total Traffic)11.8%12.1%-2.3%
Truck % (Highway)17.1%19.6%-12.7%
Avg. Travel Time28.6 min33.5 min-14.6%

How DeKalb County compares

DeKalb County has the shortest trips among its nearby counties

Compared with its 4 closest neighbours, DeKalb County moves 49.4% of the total daily travel; 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.

DeKalb 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
DeKalb County3,79611.8%1,442,07128.6 min11.2%
Steuben County, Indiana3,60020.7%1,616,61134.9 min12.0%
Allen County, Indiana6,3999.0%8,201,23332.2 min19.0%
Noble County, Indiana2,6098.3%997,29337.6 min11.2%
Defiance County, Ohio2,59511.9%858,62032.3 min10.7%
Indiana average5,70412.1%N/A33.5 min15.6%

DeKalb County ranked within Indiana

DeKalb County records the lowest average travel time in Indiana.

DeKalb County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasureDeKalb CountyIndiana rank
Traffic volume (AADT)3,796#43 of 92
Highway vehicle-miles per day659,602#37 of 79
Truck share on highways17.1%#51 of 79
Highway trucks per day2,371#33 of 79
Average travel time28.6 min#92 of 92
Average driver income$76,147#37 of 92
Average driver age47.4 yrs#57 of 92

DeKalb County ranks #37 of 92 on average driver income but #92 of 92 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in DeKalb County, Indiana

The three busiest roads in DeKalb County average 20,043 vehicles a day, 5.3 times the county average of 3,796 across all its monitored roads.

I 69 leads with 32,043 vehicles a day, 5,480 of them trucks (17.1%). That is 75% more than the next road, 7th Street (18,307). It also carries the most trucks.

I 69 carries longer journeys than most roads here, with a median trip of 44.4 minutes against 28.6 county-wide.

7th Street is busy with cars rather than freight: only 5.3% of its traffic is trucks, against 11.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 69Motorway · 32,043vehicles5,480trucks · 17.1%
Road class
Motorway
Congestion ratio
27.3%
Median trip time
44.4 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$78,168

I 69 carries 8.4 times the county average on its busiest stretch, where the median trip lasts 44.4 minutes.

27th StreetPrimary road · 18,307vehicles966trucks · 5.3%
Road class
Primary road
Congestion ratio
49.7%
Median trip time
27.5 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$69,239

Travel on 7th Street's busiest stretch runs 50% over free-flow time, against 11% across the county, so expect slower peak hours.

3SR 8Primary road · 9,778vehicles709trucks · 7.2%
Road class
Primary road
Congestion ratio
30.2%
Median trip time
28.1 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$67,653

SR 8 is one of the more congested roads here: trips take 30% longer than at free-flow speed, against 11% county-wide.

4US 6Primary road · 8,796vehicles825trucks · 9.4%
Road class
Primary road
Congestion ratio
20.7%
Median trip time
37.0 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$75,241

US 6 peaks at 8,796 vehicles a day, 2.3 times the county average; trucks are 9.4% of it, below the county-wide 11.8%.

5Grandstaff DriveTertiary road · 8,521vehicles292trucks · 3.4%
Road class
Tertiary road
Congestion ratio
19.8%
Median trip time
23.7 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$68,207

Grandstaff Drive carries 2.2 times the county average at its busiest, 292 of them trucks (3.4%, below the county-wide 11.8%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 69Motorway · #1 by traffic32,043vehicles5,480trucks · 17.1%
27th StreetPrimary road · #2 by traffic18,307vehicles966trucks · 5.3%
3Main StreetPrimary road · 7,775vehicles928trucks · 11.9%
Road class
Primary road
Congestion ratio
22.2%
Median trip time
30.4 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$70,047

Main Street carries 2.0 times the county average on its busiest stretch, where the median trip lasts 30.4 minutes.

4Randolph StreetSecondary road · 8,283vehicles848trucks · 10.2%
Road class
Secondary road
Congestion ratio
19.0%
Median trip time
27.9 min
Drivers’ median age
46.8 yrs
Drivers’ average income
$63,743

At 2.2 times the county average, Randolph Street draws drivers from neighborhoods averaging $63,743 in household income.

5US 6Primary road · #4 by traffic8,796vehicles825trucks · 9.4%
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

DeKalbDepartment 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 DeKalb County

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

Need segment-level traffic data?

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