This page delivers traffic analytics for Marion County, Indiana. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Marion County, Indiana among 1,541 road miles divided in 55,980 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 145 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.
10,267
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.4 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.
23.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
42.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$85,947
Our data indicates an estimated average traffic volume of 10,267 vehicles per day in Marion County, Indiana that results in 22,849,587 vehicle-miles traveled per day (≈8.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 12 vehicles. Typical time spent behind the wheel per trip is 33.4 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Indiana state averages: At 10,267 vehicles per day, the average monitored road in Marion carries 80% more traffic than the state average of 5,704 vehicles per day - a critical factor for logistics and site planning. Network-wide, Marion accounts for about 14% of Indiana's statewide total, at 22,849,587 vehicle-miles traveled per day (≈8.3 billion per year). The average trip takes 33.4 minutes, on par with the state level. At 51% higher than the state level, the 23.5% congestion ratio signals more pronounced congestion - crucial for traffic control improvement and logistics planning. Marion stands out as having the highest traffic volume in Indiana - 10,267 vehicles per day. 36% of counties in Indiana have a shorter average travel time than Marion's 33.4 minutes.
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.
40,005
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
40.6 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.
60.9%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
43.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$90,752
A significant volume of traffic in Marion County, Indiana utilizes the highway network. The average highway carries 40,005 vehicles per day, 320% more than the average non-highway road in the same area, which carries 9,536 vehicles per day. That average covers 264 highway road miles divided in 1,344 segments (average segment length 1,038 ft), together carrying 11,447,872 vehicle-miles traveled per day (≈4.2 billion per year). That is the most highway travel volume of any county in Indiana. Trucks constitute 12.2% of highway traffic.
Analytical insight
The concentration of trucks on highways (12.2%) is 38% lower than the state average for similar road classifications. This indicates Marion serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. Marion's highway truck share (12.2%) is higher than 10% of counties in Indiana. By raw truck volume, Marion carries more highway trucks than 91% of counties in Indiana.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
9,536
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.3 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.
22.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
42.0 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$82,048
The non-highway road network in Marion County, Indiana supports a substantial volume of traffic. The average non-highway road carries 9,536 vehicles per day, 76% less than the average highway in the same area, which carries 40,005 vehicles per day. That average covers 1,277 non-highway road miles divided in 54,636 segments (average segment length 123 ft), together carrying 11,401,715 vehicle-miles traveled per day (≈4.2 billion per year). Trucks constitute 4.1% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 66% lower than the highway network. Non-highway congestion (22.6%) runs 49% higher than the state average, pointing to slower local traffic flow. Marion's overall average travel time exceeds 36% of counties in Indiana. Marion's average driver income exceeds 92% of counties in Indiana. The driver population here skews older than 2% of counties in Indiana.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 66% higher than the daily average.
Weekend traffic:
Weekend volumes run about 21% below weekday levels.
Seasonal Fluctuation
Busy season:
April–June is the high season, with volumes +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average.
Analytical insight
In Marion County, Indiana, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +3% in high season.
Traffic Flow Profile Comparison
Metric
Marion
Indiana
Average
Difference
Traffic
10,267
5,704
+80.0%
Truck % (Total Traffic)
8.2%
12.1%
-32.6%
Truck % (Highway)
12.2%
19.6%
-37.7%
Avg. Travel Time
33.4 min
33.5 min
-0.3%
Frequently Asked Questions
The average daily traffic volume is calculated at 10,267 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - Marion has the highest average traffic volume of any county in Indiana, at 10,267 vehicles per day.
Approximately 45% of highway traffic and 14% of non-highway traffic consists of vehicles whose trip originates outside Marion 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 3% higher during April–June. Volumes drop to their lowest levels in January, averaging 9,235 vehicles per day - a 10% decrease from the annual average.
Trucks account for approximately 8.2% of the total traffic mix across all road types, with a significantly higher concentration of 12.2% on highways.
Drivers on Marion roads have a median age of 43 years, and the median household income of the neighborhoods trips originate from averages $85,947 - useful context for retail siting and customer profiling.
Weekday peaks occur between 7:00 AM and 9:00 AM in the morning and between 4:00 PM and 6:00 PM in the evening - about 66% 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)
