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Sullivan County, Indiana Traffic Counts

This page delivers traffic analytics for Sullivan County, Indiana. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Sullivan County, Indiana among 146 road miles divided in 1,524 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 507 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.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

3,013

Trucks

10.4%

Average travel time

34.6 min

Congestion ratio

9.5%

Drivers’ average age

47.1 yrs

Drivers’ average income

$60,160

Our data indicates an estimated average traffic volume of 3,013 vehicles per day in Sullivan County, Indiana that results in 497,299 vehicle-miles traveled per day (≈182 million 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 34.6 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Indiana state averages: Sullivan sees 47% lower average daily traffic volume than the state average (3,013 vehicles per day against 5,704), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network that adds up to 497,299 vehicle-miles traveled per day (≈182 million per year), roughly 0.3% of Indiana's statewide total. The average trip takes 34.6 minutes, 3% higher than the state level. Congestion runs 39% lower than the state level, at a ratio of 9.5% - smoother traffic flow - crucial for traffic control improvement and logistics planning. Sullivan carries more traffic than 31% of counties in Indiana. Its average travel time of 34.6 minutes is longer than 60% of counties in Indiana.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

6,702

Trucks

12.2%

Average travel time

41.2 min

Congestion ratio

16.6%

Drivers’ average age

45.9 yrs

Drivers’ average income

$60,122

A significant volume of traffic in Sullivan County, Indiana utilizes the highway network. The average highway carries 6,702 vehicles per day, 161% more than the average non-highway road in the same area, which carries 2,568 vehicles per day. That average covers 52 highway road miles divided in 164 segments (average segment length 1,671 ft), together carrying 314,340 vehicle-miles traveled per day (≈115 million per year). Trucks constitute 12.2% of highway traffic.

Analytical insight

The concentration of trucks on highways (12.2%) is 37% lower than the state average for similar road classifications. This indicates Sullivan serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. Sullivan's highway truck share (12.2%) is higher than 12% of counties in Indiana. By raw truck volume, Sullivan carries more highway trucks than 15% of counties in Indiana.
non-highway traffic icon

Non-highway traffic

Traffic

2,568

Trucks

7.2%

Average travel time

33.8 min

Congestion ratio

8.7%

Drivers’ average age

49.1 yrs

Drivers’ average income

$60,213

The non-highway road network in Sullivan County, Indiana supports a substantial volume of traffic. The average non-highway road carries 2,568 vehicles per day, 62% less than the average highway in the same area, which carries 6,702 vehicles per day. That average covers 94 non-highway road miles divided in 1,360 segments (average segment length 367 ft), together carrying 182,959 vehicle-miles traveled per day (≈66.8 million per year). Trucks constitute 7.2% of non-highway traffic.

Analytical insight

Non-highway roads carry a truck concentration that's 42% lower than the highway network. At 43% lower than the state level, the non-highway congestion ratio of 8.7% signals easier movement on local roads. Sullivan's overall average travel time exceeds 60% of counties in Indiana. Trip origins here have higher average income than 2% of counties in Indiana. The driver population here skews older than 31% of counties in Indiana.

Time-of-Day & Seasonal Patterns

Analytical insight

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

Traffic Flow Profile Comparison

Metric

Sullivan

Indiana
Average

Difference

Traffic

3,013

5,704

-47.2%

Truck % (Total Traffic)

10.4%

12.1%

-14.3%

Truck % (Highway)

12.2%

19.6%

-37.5%

Avg. Travel Time

34.6 min

33.5 min

+3.1%

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

IndianaDepartment of Transportation

Historical traffic pattern databases

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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