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Traffic heat map of Union County, Ohio: 450 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 33 and Delaware Avenue

Union County, Ohio Traffic Counts

How busy are the roads of Union County, Ohio? We measure 450 road miles, divided into 7,926 segments, with multi-sourced, cross-verified mobile and sensor data. Its drivers come from neighborhoods among the top 3 counties in Ohio for household income. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Union County, Ohio

Traffic

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

vehicles per day3,376
Trucks

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

10.6%
Average travel time

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

30.3 min
Congestion ratio

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

10.4%
Drivers’ average age

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

45.1 yrs
Drivers’ average income

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

$107,419

Our data shows 3,376 vehicles per day on the average road in Union County, Ohio, and 1,998,335 vehicle-miles traveled per day (≈729 million per year) across its 450 miles of monitored roads. Trucks are 10.6% of traffic, close to the 9.9% across Ohio.

Shorter trips than 90% of counties in Ohio

Union sees 42% lower average daily traffic volume than the state average (3,376 vehicles per day against 5,773), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.8% of Ohio's statewide total. By volume, Union's 3,376 vehicles per day outpaces 56% of counties in Ohio.

Journey times run 8% lower than the state level, at 30.3 minutes on average. Its average travel time of 30.3 minutes is shorter than 90% of counties in Ohio.

At 37% lower than the state level, the 10.4% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Union County, Ohio

Trafficvehicles per day9,353
Trucks13.5%
Average travel time38.2 min
Congestion ratio20.8%
Drivers’ average age44.9 yrs
Drivers’ average income$107,204

Highways carry more than half of all travel in Union County, Ohio (56% of vehicle-miles). The average highway carries 9,353 vehicles per day, 223% more than the average non-highway road in the same area, which carries 2,898 vehicles per day.

Yet highways are only 18% of the road network, 79 miles in 587 segments, so each mile of them is 3.2 times as busy as the average road mile.

That is more highway travel volume than 57% of counties in Ohio.

Lower highway truck share than 65% of counties in Ohio

Highway truck concentration here runs 9% lower than the state average, at 13.5%. The highway traffic mix is typical for Ohio: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 65% of counties in Ohio. Union's highway truck count is lower than 51% of counties in Ohio, at roughly 1,265 trucks per day.

non-highway traffic icon

Non-highway Traffic in Union County, Ohio

Trafficvehicles per day2,898
Trucks6.9%
Average travel time29.7 min
Congestion ratio9.5%
Drivers’ average age45.3 yrs
Drivers’ average income$107,619

A significant share of driving in Union County, Ohio, 44% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 2,898 vehicles per day.

Spread over 371 miles and 7,339 segments, 82% of the road network, local roads carry a lighter load per mile: 887,237 vehicle-miles traveled per day (≈324 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.9%).

Drivers from higher-income areas than 98% of counties in Ohio

Non-highway roads carry a truck concentration that's 49% lower than the highway network.

At 40% lower than the state level, the non-highway congestion ratio of 9.5% signals easier movement on local roads.

Union's average driver income is higher than 98% of counties in Ohio. The driver population here skews younger than 95% of counties in Ohio.

Time-of-Day & Seasonal Patterns

peak hours icon
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 83% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 18% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +9% versus the annual average.
Lowest month:
January is the quietest month, with volumes -17% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Union County, Ohio, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +9% in high season.

Union County vs. Ohio Traffic Comparison

Of the four measures, average daily traffic per road differs most: Union County runs 42% below the Ohio average.

MetricUnion CountyOhio averageDifference
Traffic3,3765,773-41.5%
Truck % (Total Traffic)10.6%9.9%+6.6%
Truck % (Highway)13.5%14.9%-9.1%
Avg. Travel Time30.3 min32.9 min-7.8%

How Union County compares

Union County against nearby counties

Nothing in this table sets Union County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five.

Union 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
Union County3,37610.6%1,998,33530.3 min10.4%
Marion County, Ohio4,61510.9%1,288,10243.6 min14.3%
Logan County, Ohio2,14510.5%1,272,60035.0 min9.3%
Delaware County, Ohio6,2698.3%5,148,49829.3 min16.9%
Champaign County, Ohio2,3657.7%789,29433.4 min10.1%
Ohio average5,7739.9%N/A32.9 min16.5%

Union County ranked within Ohio

Union County sits in Ohio's top three on average driver income.

Union County ranked among 88 county-level areas in Ohio (1 = highest); measures without data in every county rank a smaller field, down to 83.
MeasureUnion CountyOhio rank
Traffic volume (AADT)3,376#39 of 88
Highway vehicle-miles per day1,111,098#36 of 83
Truck share on highways13.5%#54 of 83
Highway trucks per day1,265#43 of 83
Average travel time30.3 min#79 of 88
Average driver income$107,419#3 of 88
Average driver age45.1 yrs#83 of 88

Union County ranks #3 of 88 on average driver income but #83 of 88 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Union County, Ohio

On their busiest stretches, the three busiest roads in Union County carry 26,686 vehicles a day on average, 7.9 times the typical road in the county (3,376).

US 33 is the busiest road, at 38,011 vehicles a day, 5,283 of them trucks (13.9%). It tops the truck ranking too, with the most trucks.

Freight stands out on Honda Parkway and US Route 33: trucks are 18.4% and 18.1% of the traffic there, against 10.6% county-wide.

Trips using US Route 33 are long: a median of 43.6 minutes against 30.3 county-wide, the mark of a through route.

Traffic and freight follow different roads here: only 2 of the five busiest roads also make the top 5 for trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 33Motorway · 38,011vehicles5,283trucks · 13.9%
Road class
Motorway
Congestion ratio
32.2%
Median trip time
41.2 min
Drivers’ median age
44.3 yrs
Drivers’ average income
$108,704

Drivers on US 33 are on long journeys, a median 41.2 minutes against 30.3 county-wide: a through route more than a local street.

2US Route 33Motorway · 25,343vehicles4,578trucks · 18.1%
Road class
Motorway
Congestion ratio
34.6%
Median trip time
43.6 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$98,319

US Route 33 is a trunk route for the county, carrying 7.5 times the county average on its busiest stretch; trucks are 18.1% of it, above the county-wide 10.6%.

3Delaware AvenueSecondary road · 16,704vehicles708trucks · 4.2%
Road class
Secondary road
Congestion ratio
41.6%
Median trip time
29.1 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$96,928

Delaware Avenue is one of the more congested roads here: trips take 42% longer than at free-flow speed, against 10% county-wide.

45th StreetSecondary road · 15,363vehicles630trucks · 4.1%
Road class
Secondary road
Congestion ratio
45.2%
Median trip time
26.4 min
Drivers’ median age
45.3 yrs
Drivers’ average income
$93,602

Delays build on 5th Street: its congestion ratio of 45% over free-flow time is well above the county's 10%.

5Main StreetPrimary road · 15,071vehicles733trucks · 4.9%
Road class
Primary road
Congestion ratio
21.5%
Median trip time
30.0 min
Drivers’ median age
45.4 yrs
Drivers’ average income
$82,322

The busiest stretch of Main Street carries 4.5 times the county average; trucks are 4.9% of it, below the county-wide 10.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 33Motorway · #1 by traffic38,011vehicles5,283trucks · 13.9%
2US Route 33Motorway · #2 by traffic25,343vehicles4,578trucks · 18.1%
3Honda ParkwayTertiary road · 6,986vehicles1,282trucks · 18.4%
Road class
Tertiary road
Congestion ratio
16.1%
Median trip time
37.0 min
Drivers’ median age
46.0 yrs
Drivers’ average income
$95,161

On its busiest stretch, Honda Parkway carries 2.1 times the county average; trucks are 18.4% of it, above the county-wide 10.6%.

4US 42Trunk road · 10,315vehicles1,096trucks · 10.6%
Road class
Trunk road
Congestion ratio
23.3%
Median trip time
36.0 min
Drivers’ median age
44.9 yrs
Drivers’ average income
$129,288

US 42 peaks at 10,315 vehicles a day, 3.1 times the county average; trucks are 10.6% of it, in line with the county-wide 10.6%.

5Stokes RoadSecondary road · 7,061vehicles1,026trucks · 14.5%
Road class
Secondary road
Congestion ratio
15.9%
Median trip time
33.5 min
Drivers’ median age
46.6 yrs
Drivers’ average income
$100,650

Stokes Road carries 2.1 times the county average at its busiest, 1,026 of them trucks (14.5%, above the county-wide 10.6%).

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

UnionDepartment 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 Union County

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

Need segment-level traffic data?

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