This page delivers traffic analytics for Johnson County, Indiana. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Johnson County, Indiana among 447 road miles divided in 9,761 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 242 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
6,938
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
10.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.1 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
19.9%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$93,338
Our data indicates an estimated average traffic volume of 6,938 vehicles per day in Johnson County, Indiana that results in 3,584,056 vehicle-miles traveled per day (≈1.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 31.1 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Indiana state averages: At 6,938 vehicles per day, the average monitored road in Johnson carries 22% more traffic than the state average of 5,704 vehicles per day - a critical factor for logistics and site planning. In total volume terms, its road network carries 3,584,056 vehicle-miles traveled per day (≈1.3 billion per year), about 2.2% of Indiana's statewide total. The average trip takes 31.1 minutes, 7% lower than the state level. At 28% higher than the state level, the 19.9% congestion ratio signals more pronounced congestion - crucial for traffic control improvement and logistics planning. 95% of counties in Indiana see less traffic than Johnson's 6,938 vehicles per day. On travel time, Johnson runs longer than 13% of counties in Indiana.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
23,404
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
19.6%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
46.1 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
35.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$87,891
A significant volume of traffic in Johnson County, Indiana utilizes the highway network. The average highway carries 23,404 vehicles per day, 245% more than the average non-highway road in the same area, which carries 6,783 vehicles per day. That average covers 58 highway road miles divided in 91 segments (average segment length 3,343 ft), together carrying 1,338,230 vehicle-miles traveled per day (≈488 million per year). That is more highway travel volume than 86% of counties in Indiana. Trucks constitute 19.6% of highway traffic.
Analytical insight
The concentration of trucks on highways (19.6%) is in line with the state average for similar road classifications. By truck concentration, highways here outrank 49% of counties in Indiana. Johnson's highway truck count is higher than 83% of counties in Indiana, at roughly 4,599 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
6,783
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.3%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.0 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
19.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$94,679
The non-highway road network in Johnson County, Indiana supports a substantial volume of traffic. The average non-highway road carries 6,783 vehicles per day, 71% less than the average highway in the same area, which carries 23,404 vehicles per day. That average covers 389 non-highway road miles divided in 9,670 segments (average segment length 212 ft), together carrying 2,245,826 vehicle-miles traveled per day (≈820 million per year). Trucks constitute 4.3% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 78% lower than on highways. The non-highway congestion ratio of 19.7% is 30% higher than the state level, suggesting slower local mobility than the state average. Johnson's overall average travel time exceeds 13% of counties in Indiana. Trip origins here have higher average income than 96% of counties in Indiana. Johnson's median driver age is higher than 4% of counties in Indiana.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 84% higher than the daily average.
Weekend traffic:
Weekend volumes run about 19% below weekday levels.
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -15% versus the annual average.
Analytical insight
In Johnson County, Indiana, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is mild at +6% in high season.
Traffic Flow Profile Comparison
Metric
Johnson
Indiana
Average
Difference
Traffic
6,938
5,704
+21.6%
Truck % (Total Traffic)
10.0%
12.1%
-17.3%
Truck % (Highway)
19.6%
19.6%
+0.4%
Avg. Travel Time
31.1 min
33.5 min
-7.2%
How Johnson County compares
Johnson County against nearby areas
Against the 4 nearest areas, Johnson County is 41.1% more congested and carries 43.7% more traffic on a typical road; it has the second 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.
Johnson County and the 4 nearest county-level areas by centroid distance, with the Indiana average for scale.
Average driver age places Johnson County #88 of 92 in Indiana - the bottom quarter of the state.
Where Johnson County sits among Indiana's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
Measure
Johnson County
Indiana rank
Traffic volume (AADT)
6,938
#6 of 92
Highway vehicle-miles per day
1,338,230
#12 of 79
Truck share on highways
19.6%
#41 of 79
Highway trucks per day
4,599
#14 of 79
Average travel time
31.1 min
#80 of 92
Average driver income
$93,338
#5 of 92
Average driver age
44.4 yrs
#88 of 92
The two ends of this table sit far apart: #5 of 92 on average driver income, against #88 of 92 on average driver age.
Frequently Asked Questions
The average daily traffic volume is calculated at 6,938 vehicles per day, providing a baseline for daily operations and site assessment.
Johnson's average travel time of 31.1 minutes is longer than 13% of counties in Indiana.
Approximately 55% of highway traffic and 16% of non-highway traffic consists of vehicles whose trip originates outside Johnson County, Indiana. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Traffic volumes are typically 6% higher during June–August. Volumes drop to their lowest levels in January, averaging 5,893 vehicles per day - a 15% decrease from the annual average.
Drivers on Johnson roads have a median age of 44 years, and the median household income of the neighborhoods trips originate from averages $93,338 - useful context for retail siting and customer profiling.
The average travel time for drivers is 31.1 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 7:00 AM and 8:00 AM in the morning and between 4:00 PM and 6:00 PM in the evening - about 84% above the daily average.
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)
