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Traffic heat map of Iron County, Wisconsin: 124 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 51 and Cary Road

Iron County, Wisconsin Traffic Counts

TrafficZoom tracks traffic on 124 road miles in Iron County, Wisconsin, divided into 1,116 segments averaging 588 ft. The average road here carries 2,150 vehicles a day, 43% less than the Wisconsin average of 3,802. 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 Iron County, Wisconsin

Traffic

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

vehicles per day2,150
Trucks

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

13.9%
Average travel time

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

29.9 min
Congestion ratio

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

8.8%
Drivers’ average age

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

57.9 yrs
Drivers’ average income

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

$58,074

A typical monitored road in Iron County, Wisconsin sees 2,150 vehicles per day, while its 124 miles of monitored roads together handle 211,186 vehicle-miles traveled per day (≈77.1 million per year). Trucks are 13.9% of traffic, more than the 10.2% across Wisconsin.

Shorter trips than 83% of counties in Wisconsin

Iron sees 43% lower average daily traffic volume than the state average (2,150 vehicles per day against 3,802), suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 0.2% of Wisconsin's statewide total of vehicle-miles. Iron carries less traffic than 58% of counties in Wisconsin.

At 29.9 minutes, the average travel time is 7% lower than the state level. On travel time, Iron runs shorter than 83% of counties in Wisconsin.

At 30% lower than the state level, the 8.8% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Iron County, Wisconsin

Trafficvehicles per day3,485
Trucks15.2%
Average travel time41.8 min
Congestion ratio9.9%
Drivers’ average age58.6 yrs
Drivers’ average income$58,328

Highways carry most of the traffic in Iron County, Wisconsin: 77% of all vehicle-miles. The average highway carries 3,485 vehicles per day, 203% more than the average non-highway road in the same area, which carries 1,150 vehicles per day.

With 41% of the road miles (52 miles in 478 segments), highways punch above their length, carrying 163,295 vehicle-miles traveled per day (≈59.6 million per year).

Fewer highway trucks than 95% of counties in Wisconsin

The concentration of trucks on highways (15.2%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Wisconsin: neither freight- nor commuter-dominated.

Iron's highway truck share (15.2%) is higher than 67% of counties in Wisconsin. Iron's highway truck count is lower than 95% of counties in Wisconsin, at roughly 528 trucks per day.

non-highway traffic icon

Non-highway Traffic in Iron County, Wisconsin

Trafficvehicles per day1,150
Trucks9.6%
Average travel time21.0 min
Congestion ratio8.0%
Drivers’ average age55.9 yrs
Drivers’ average income$57,606

Local roads carry a smaller share of travel in Iron County, Wisconsin, 23% of vehicle-miles; most driving happens on highways. A typical local road sees 1,150 vehicles per day.

Local roads make up 59% of the monitored road miles (73 miles in 638 segments) but carry less than their share of travel: 47,891 vehicle-miles traveled per day (≈17.5 million per year). The truck share on non-highway roads is 9.6%.

Drivers from lower-income areas than 99% of counties in Wisconsin

Non-highway roads carry a truck concentration that's 37% lower than the highway network.

At 34% lower than the state level, the non-highway congestion ratio of 8.0% signals easier movement on local roads.

Iron's average driver income is lower than 99% of counties in Wisconsin. 97% of counties in Wisconsin have a younger driver population than Iron.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 77% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 10% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +29% versus the annual average.
Lowest month:
April is the quietest month, with volumes -23% versus the annual average.

Data Finding: Hourly & Seasonal Patterns

In Iron County, Wisconsin, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +29% in high season.

Iron County vs. Wisconsin Traffic Comparison

The average daily traffic per road sets Iron County apart: 43% below the Wisconsin average. Its truck share, by contrast, is 37% above.

MetricIron CountyWisconsin averageDifference
Traffic2,1503,802-43.5%
Truck % (Total Traffic)13.9%10.2%+36.6%
Truck % (Highway)15.2%14.7%+3.1%
Avg. Travel Time29.9 min32.2 min-7.0%

How Iron County compares

Iron County has a higher truck share than any nearby county

Iron County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the second busiest roads of the five. Traffic volume here matches the areas around it, but more of that traffic is trucks - a difference in what routes through, not in how much.

Iron County and the 4 nearest county-level areas by centroid distance, with the Wisconsin average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Iron County2,15013.9%211,18629.9 min8.8%
Ashland County, Wisconsin2,04211.5%265,36434.9 min6.0%
Gogebic County, Michigan2,1029.9%250,22430.2 min6.6%
Price County, Wisconsin1,89010.7%283,41333.7 min8.4%
Vilas County, Wisconsin2,5518.8%627,87830.2 min8.1%
Wisconsin average3,80210.2%N/A32.2 min12.6%

Iron County ranked within Wisconsin

On average driver age, Iron County is among the three highest county-level areas in Wisconsin.

Iron County ranked among 72 county-level areas in Wisconsin (1 = highest); measures without data in every county rank a smaller field, down to 58.
MeasureIron CountyWisconsin rank
Traffic volume (AADT)2,150#42 of 72
Highway vehicle-miles per day163,295#51 of 58
Truck share on highways15.2%#20 of 58
Highway trucks per day528#55 of 58
Average travel time29.9 min#60 of 72
Average driver income$58,074#71 of 72
Average driver age57.9 yrs#3 of 72

Iron County ranks #3 of 72 on average driver age but #71 of 72 on average driver income. The driver population here skews older and lower-income than most of Wisconsin.

Busiest roads in Iron County, Wisconsin

The three busiest roads in Iron County average 4,660 vehicles a day, 2.2 times the county average of 2,150 across all its monitored roads.

US 51 leads with 5,210 vehicles a day, 486 of them trucks (9.3%). 2nd Avenue carries the most trucks, 650 a day (16.6% of its traffic), although it ranks #5 for all traffic.

Major Richard I. Bong Memorial Highway carries longer journeys than most roads here, with a median trip of 42.1 minutes against 29.9 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 51Trunk road · 5,210vehicles486trucks · 9.3%
Road class
Trunk road
Congestion ratio
10.4%
Median trip time
30.7 min
Drivers’ median age
56.5 yrs
Drivers’ average income
$56,966

On its busiest stretch, US 51 carries 2.4 times the county average; trucks are 9.3% of it, below the county-wide 13.9%.

2Cary RoadPrimary road · 4,602vehicles404trucks · 8.8%
Road class
Primary road
Congestion ratio
13.4%
Median trip time
19.0 min
Drivers’ median age
55.8 yrs
Drivers’ average income
$57,831

Trips on Cary Road are short, a median 19.0 minutes against 29.9 county-wide, so it mostly serves local errands and commutes.

3Major Richard I. Bong Memorial HighwayTrunk road · 4,168vehicles583trucks · 14.0%
Road class
Trunk road
Congestion ratio
9.6%
Median trip time
42.1 min
Drivers’ median age
53.9 yrs
Drivers’ average income
$58,361

At 94% more than the county average, Major Richard I. Bong Memorial Highway draws drivers from neighborhoods averaging $58,361 in household income.

4Granite RoadPrimary road · 4,093vehicles435trucks · 10.6%
Road class
Primary road
Congestion ratio
12.0%
Median trip time
21.8 min
Drivers’ median age
55.6 yrs
Drivers’ average income
$53,867

Granite Road is a local road at heart: the median trip using it lasts 21.8 minutes, against 29.9 for the county.

52nd AvenueTrunk road · 3,921vehicles650trucks · 16.6%
Road class
Trunk road
Congestion ratio
12.5%
Median trip time
35.3 min
Drivers’ median age
58.9 yrs
Drivers’ average income
$47,433

2nd Avenue is busy by local standards, at 82% more than the county average on its busiest stretch; trucks are 16.6% of it, above the county-wide 13.9%.

Ranked by trucks per day

Cars and light vehiclesTrucks
12nd AvenueTrunk road · #5 by traffic3,921vehicles650trucks · 16.6%
2Major Richard I. Bong Memorial HighwayTrunk road · #3 by traffic4,168vehicles583trucks · 14.0%
3US 51Trunk road · #1 by traffic5,210vehicles486trucks · 9.3%
4Granite RoadPrimary road · #4 by traffic4,093vehicles435trucks · 10.6%
5Cary RoadPrimary road · #2 by traffic4,602vehicles404trucks · 8.8%
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

IronDepartment 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 Iron County

The same traffic breakdown for the areas closest to Iron County, Wisconsin.

Need segment-level traffic data?

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