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Traffic heat map of Iron County, Missouri: 111 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and MO 221

Iron County, Missouri Traffic Counts

How busy are the roads of Iron County, Missouri? We measure 111 road miles, divided into 861 segments, with multi-sourced, cross-verified mobile and sensor data. The average road here carries 1,653 vehicles a day, 71% less than the Missouri average of 5,631. 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 Iron County, Missouri

Traffic

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

vehicles per day1,653
Trucks

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

10.7%
Average travel time

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

29.9 min
Drivers’ average age

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

51.5 yrs
Drivers’ average income

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

$53,469

Our data shows 1,653 vehicles per day on the average road in Iron County, Missouri, and 138,081 vehicle-miles traveled per day (≈50.4 million per year) across its 111 miles of monitored roads. Trucks are 10.7% of traffic, close to the 9.8% across Missouri.

Traffic 71% below the Missouri average

At 1,653 vehicles per day, the average monitored road in Iron carries 71% less traffic than the state average of 5,631, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is less than 0.1% of Missouri's statewide total. Iron carries less traffic than 64% of counties in Missouri.

At 29.9 minutes, the average travel time matches the state level closely. On travel time, Iron runs shorter than 82% of counties in Missouri.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Iron County vs. Missouri Traffic Comparison

Of the four measures, average daily traffic per road differs most: Iron County runs 71% below the Missouri average.

MetricIron CountyMissouri averageDifference
Traffic1,6535,631-70.6%
Truck % (Total Traffic)10.7%9.8%+9.3%
Avg. Travel Time29.9 min31.3 min-4.5%

How Iron County compares

Iron County against nearby counties

Set against the average of the 4 areas nearest to it, Iron County moves 20.7% of the total daily travel and carries 39.6% less traffic on a typical road; it has the third busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Iron County and the 4 nearest county-level areas by centroid distance, with the Missouri average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Iron County1,65310.7%138,08129.9 minN/A
Madison County, Missouri2,56010.9%366,01731.0 minN/A
Reynolds County, Missouri81611.2%96,67931.2 minN/A
St. Francois County, Missouri6,0537.7%1,926,47830.1 min8.3%
Wayne County, Missouri1,51111.3%280,95228.3 min10.4%
Missouri average5,6319.8%N/A31.3 min19.4%

Iron County ranked within Missouri

Iron County sits in the bottom quarter of the Missouri field on average driver income, at #95 of 115.

Iron County ranked among 115 county-level areas in Missouri (1 = highest).
MeasureIron CountyMissouri rank
Traffic volume (AADT)1,653#74 of 115
Average travel time29.9 min#94 of 115
Average driver income$53,469#95 of 115
Average driver age51.5 yrs#21 of 115

The two ends of this table sit far apart: #21 of 115 on average driver age, against #95 of 115 on average driver income.

Busiest roads in Iron County, Missouri

On their busiest stretches, the three busiest roads in Iron County carry 3,286 vehicles a day on average, 2.0 times the typical road in the county (1,653).

Main Street leads with 4,930 vehicles a day, 378 of them trucks (7.7%). No other road comes close: MO 221, in second place, carries 2,501. It tops the truck ranking too, with the most trucks.

Trucks make up 22.7% of traffic on MO 32, against 10.7% across all roads in the county.

Trips using MO 32 are long: a median of 46.0 minutes against 29.9 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetSecondary road · 4,930vehicles378trucks · 7.7%
Road class
Secondary road
Median trip time
29.5 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$53,889

On its busiest stretch, Main Street carries 3.0 times the county average; trucks are 7.7% of it, below the county-wide 10.7%.

2MO 221Secondary road · 2,501vehicles186trucks · 7.4%
Road class
Secondary road
Median trip time
31.0 min
Drivers’ median age
50.6 yrs
Drivers’ average income
$53,595

MO 221 is busy by local standards, at 51% more than the county average on its busiest stretch; trucks are 7.4% of it, below the county-wide 10.7%.

3MO 21Primary road · 2,427vehicles231trucks · 9.5%
Road class
Primary road
Median trip time
29.7 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$53,267

MO 21 peaks at 2,427 vehicles a day, 47% more than the county average; trucks are 9.5% of it, below the county-wide 10.7%.

4Russell StreetTertiary road · 2,069vehicles105trucks · 5.1%
Road class
Tertiary road
Median trip time
28.8 min
Drivers’ median age
53.3 yrs
Drivers’ average income
$47,488

Russell Street carries 25% more than the county average at its busiest, 105 of them trucks (5.1%, below the county-wide 10.7%).

5MO 72Primary road · 1,729vehicles165trucks · 9.6%
Road class
Primary road
Median trip time
30.6 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$63,828

Even at its busiest, MO 72 carries about the same as the county average; trucks are 9.6% of it, below the county-wide 10.7%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetSecondary road · #1 by traffic4,930vehicles378trucks · 7.7%
2MO 21Primary road · #3 by traffic2,427vehicles231trucks · 9.5%
3MO 221Secondary road · #2 by traffic2,501vehicles186trucks · 7.4%
4MO 72Primary road · #5 by traffic1,729vehicles165trucks · 9.6%
5MO 32Primary road · 648vehicles147trucks · 22.7%
Road class
Primary road
Median trip time
46.0 min
Drivers’ median age
51.6 yrs
Drivers’ average income
$47,186

MO 32 is a quieter road: its busiest stretch carries 61% less than the county average; trucks are 22.7% of it, above the county-wide 10.7%.

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

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, Missouri.

Need segment-level traffic data?

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