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Traffic heat map of Monroe County, Iowa: 102 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and Clinton Street

Monroe County, Iowa Traffic Counts

TrafficZoom tracks traffic on 102 road miles in Monroe County, Iowa, divided into 603 segments averaging 895 ft. Its busiest road, Main Street, carries 9,233 vehicles a day, 3.2 times the average road. 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 Monroe County, Iowa

Traffic

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

vehicles per day2,872
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.

34.8 min
Congestion ratio

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

9.8%
Drivers’ average age

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

51.2 yrs
Drivers’ average income

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

$70,028

Our data shows 2,872 vehicles per day on the average road in Monroe County, Iowa, and 221,998 vehicle-miles traveled per day (≈81.0 million per year) across its 102 miles of monitored roads. About 1 in 9 vehicles is a truck, in line with Iowa (11.0%).

Busier roads than 87% of counties in Iowa

Monroe's average daily traffic volume is 6% lower than the state average - 2,872 vehicles per day against 3,042. Across the whole network, that travel is about 0.3% of Iowa's statewide total. Monroe carries more traffic than 87% of counties in Iowa.

At 34.8 minutes, the average travel time is 5% higher than the state level. 67% of counties in Iowa have a shorter average travel time than Monroe's 34.8 minutes.

Congestion is somewhat lower than the state level, at a ratio of 9.8% (14% lower) - crucial for traffic control improvement and logistics planning.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and PM peak 4:00 PM–5:00 PM, with volumes reaching approximately 92% 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:
May–July is the high season, with volumes +9% versus the annual average.
Lowest month:
February is the quietest month, with volumes -18% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

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

Monroe County vs. Iowa Traffic Comparison

Monroe County stays close to the Iowa average; the largest gap is its average daily traffic per road, 6% below.

MetricMonroe CountyIowa averageDifference
Traffic2,8723,042-5.6%
Truck % (Total Traffic)10.6%11.0%-3.9%
Avg. Travel Time34.8 min33.0 min+5.4%

How Monroe County compares

Monroe County is more congested than any nearby county

Against the 4 nearest areas, Monroe County is 35.8% more congested and moves 48.5% of the total daily travel; it has the busiest roads of the five. The mirror image of a big network: fewer road-miles carrying heavier traffic, so the travel here is concentrated rather than spread out.

Monroe County and the 4 nearest county-level areas by centroid distance, with the Iowa average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Monroe County2,87210.6%221,99834.8 min9.8%
Appanoose County, Iowa1,6869.1%205,57528.3 min8.3%
Marion County, Iowa2,52610.2%717,22530.3 min7.4%
Lucas County, Iowa1,75911.1%207,55337.7 min5.9%
Wapello County, Iowa2,37010.4%699,12534.5 min7.3%
Iowa average3,04211.0%N/A33.0 min11.4%

Monroe County ranked within Iowa

Monroe County sits in the top quarter of the Iowa field on average daily traffic volume, at #14 of 99.

Monroe County ranked among 99 county-level areas in Iowa (1 = highest).
MeasureMonroe CountyIowa rank
Traffic volume (AADT)2,872#14 of 99
Average travel time34.8 min#33 of 99
Average driver income$70,028#70 of 99
Average driver age51.2 yrs#34 of 99

Busiest roads in Monroe County, Iowa

On their busiest stretches, the three busiest roads in Monroe County carry 7,550 vehicles a day on average, 2.6 times the typical road in the county (2,872).

Main Street leads with 9,233 vehicles a day, 676 of them trucks (7.3%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetPrimary road · 9,233vehicles676trucks · 7.3%
Road class
Primary road
Congestion ratio
21.9%
Median trip time
31.8 min
Drivers’ median age
50.7 yrs
Drivers’ average income
$69,683

Main Street is one of the more congested roads here: trips take 22% longer than at free-flow speed, against 10% county-wide.

2Clinton StreetPrimary road · 8,538vehicles628trucks · 7.4%
Road class
Primary road
Congestion ratio
20.5%
Median trip time
33.1 min
Drivers’ median age
51.1 yrs
Drivers’ average income
$69,099

Delays build on Clinton Street: its congestion ratio of 20% over free-flow time is well above the county's 10%.

3IA 5Primary road · 4,879vehicles460trucks · 9.4%
Road class
Primary road
Congestion ratio
12.0%
Median trip time
39.8 min
Drivers’ median age
51.8 yrs
Drivers’ average income
$66,103

At 70% more than the county average, IA 5 draws drivers from neighborhoods averaging $66,103 in household income.

4Monroe-Wapello RoadSecondary road · 3,592vehicles339trucks · 9.4%
Road class
Secondary road
Median trip time
29.7 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$79,266

Monroe-Wapello Road is busy by local standards, at 25% more than the county average on its busiest stretch; trucks are 9.4% of it, below the county-wide 10.6%.

5IA 137Primary road · 3,347vehicles337trucks · 10.1%
Road class
Primary road
Congestion ratio
7.5%
Median trip time
33.8 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$74,256

IA 137 peaks at 3,347 vehicles a day, 17% more than the county average; trucks are 10.1% of it, in line with the county-wide 10.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetPrimary road · #1 by traffic9,233vehicles676trucks · 7.3%
2Clinton StreetPrimary road · #2 by traffic8,538vehicles628trucks · 7.4%
3IA 5Primary road · #3 by traffic4,879vehicles460trucks · 9.4%
4Monroe-Wapello RoadSecondary road · #4 by traffic3,592vehicles339trucks · 9.4%
5IA 137Primary road · #5 by traffic3,347vehicles337trucks · 10.1%
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

MonroeDepartment 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 Monroe County

The same traffic breakdown for the areas closest to Monroe County, Iowa.

Need segment-level traffic data?

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