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Traffic heat map of Hardin County, Ohio: 281 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Franklin Street and Main Street

Hardin County, Ohio Traffic Counts

TrafficZoom tracks traffic on 281 road miles in Hardin County, Ohio, divided into 3,663 segments averaging 405 ft. Trips here are among the 3 longest of any county in Ohio. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Hardin County, Ohio

Traffic

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

vehicles per day2,413
Trucks

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

8.7%
Average travel time

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

39.8 min
Congestion ratio

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

9.3%
Drivers’ average age

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

47.3 yrs
Drivers’ average income

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

$65,245

Our data shows 2,413 vehicles per day on the average road in Hardin County, Ohio, and 513,440 vehicle-miles traveled per day (≈187 million per year) across its 281 miles of monitored roads. About 1 in 12 vehicles is a truck, in line with Ohio (9.9%).

Longer trips than 98% of counties in Ohio

Hardin's average daily traffic volume is 58% lower than the state average - 2,413 vehicles per day against 5,773 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.2% of Ohio's statewide total of vehicle-miles. 74% of counties in Ohio see more traffic than Hardin's 2,413 vehicles per day.

At 39.8 minutes, the average travel time is 21% higher than the state level. On travel time, Hardin runs longer than 98% of counties in Ohio.

The congestion ratio of 9.3% is 44% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Hardin County vs. Ohio Traffic Comparison

The average daily traffic per road sets Hardin County apart: 58% below the Ohio average. Its average travel time, by contrast, is 21% above.

MetricHardin CountyOhio averageDifference
Traffic2,4135,773-58.2%
Truck % (Total Traffic)8.7%9.9%-12.5%
Avg. Travel Time39.8 min32.9 min+21.2%

How Hardin County compares

Hardin County moves the least traffic of its nearby counties

Against the 4 nearest areas, Hardin County moves 37.0% of the total daily travel; it has the fourth busiest roads of the five. Quiet roads and long journeys - a rural pattern, where the distance between destinations rather than the traffic on the way is what takes the time.

Hardin County and the 4 nearest county-level areas by centroid distance, with the Ohio average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Hardin County2,4138.7%513,44039.8 min9.3%
Logan County, Ohio2,14510.5%1,272,60035.0 min9.3%
Wyandot County, Ohio2,43919.6%997,62333.7 min8.0%
Marion County, Ohio4,61510.9%1,288,10243.6 min14.3%
Union County, Ohio3,37610.6%1,998,33530.3 min10.4%
Ohio average5,7739.9%N/A32.9 min16.5%

Hardin County ranked within Ohio

On average travel time, Hardin County is among the three highest county-level areas in Ohio.

Hardin County ranked among 88 county-level areas in Ohio (1 = highest).
MeasureHardin CountyOhio rank
Traffic volume (AADT)2,413#65 of 88
Average travel time39.8 min#3 of 88
Average driver income$65,245#63 of 88
Average driver age47.3 yrs#68 of 88

The two ends of this table sit far apart: #3 of 88 on average travel time, against #68 of 88 on average driver age.

Busiest roads in Hardin County, Ohio

The three busiest roads in Hardin County average 9,013 vehicles a day, 3.7 times the county average of 2,413 across all its monitored roads.

Franklin Street leads with 11,273 vehicles a day, 719 of them trucks (6.4%). Main Street carries the most trucks, 790 a day (9.7% of its traffic), although it ranks #2 for all traffic.

SR 67 carries longer journeys than most roads here, with a median trip of 61.6 minutes against 39.8 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Franklin StreetPrimary road · 11,273vehicles719trucks · 6.4%
Road class
Primary road
Congestion ratio
26.1%
Median trip time
37.4 min
Drivers’ median age
46.8 yrs
Drivers’ average income
$52,944

Travel on Franklin Street's busiest stretch runs 26% over free-flow time, against 9% across the county, so expect slower peak hours.

2Main StreetPrimary road · 8,110vehicles790trucks · 9.7%
Road class
Primary road
Congestion ratio
19.2%
Median trip time
43.8 min
Drivers’ median age
46.6 yrs
Drivers’ average income
$61,878

Main Street is one of the more congested roads here: trips take 19% longer than at free-flow speed, against 9% county-wide.

3SR 117Primary road · 7,655vehicles772trucks · 10.1%
Road class
Primary road
Congestion ratio
18.2%
Median trip time
48.5 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$73,719

SR 117 carries 3.2 times the county average on its busiest stretch, where the median trip lasts 48.5 minutes.

4Columbus StreetSecondary road · 7,316vehicles257trucks · 3.5%
Road class
Secondary road
Congestion ratio
17.3%
Median trip time
31.1 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$59,524

At 3.0 times the county average, Columbus Street draws drivers from neighborhoods averaging $59,524 in household income.

5US 68Primary road · 7,149vehicles729trucks · 10.2%
Road class
Primary road
Congestion ratio
16.7%
Median trip time
46.5 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$68,399

The busiest stretch of US 68 carries 3.0 times the county average; trucks are 10.2% of it, above the county-wide 8.7%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetPrimary road · #2 by traffic8,110vehicles790trucks · 9.7%
2SR 117Primary road · #3 by traffic7,655vehicles772trucks · 10.1%
3US 68Primary road · #5 by traffic7,149vehicles729trucks · 10.2%
4Franklin StreetPrimary road · #1 by traffic11,273vehicles719trucks · 6.4%
5SR 67Primary road · 5,600vehicles610trucks · 10.9%
Road class
Primary road
Congestion ratio
13.3%
Median trip time
61.6 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$77,915

On its busiest stretch, SR 67 carries 2.3 times the county average; trucks are 10.9% of it, above the county-wide 8.7%.

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

HardinDepartment 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 Hardin County

The same traffic breakdown for the areas closest to Hardin County, Ohio.

Need segment-level traffic data?

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