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Traffic heat map of Clinton County, Iowa: 454 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 61 and US 30

Clinton County, Iowa Traffic Counts

Our Clinton County, Iowa traffic data covers 3,589 road segments over 454 road miles, with an average segment of just 667 ft. Its busiest road, US 61, carries 22,044 vehicles a day, 8.0 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Clinton County, Iowa

Traffic

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

vehicles per day2,761
Trucks

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

8.4%
Average travel time

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

32.8 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.

50.9 yrs
Drivers’ average income

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

$74,703

Our data shows 2,761 vehicles per day on the average road in Clinton County, Iowa, and 1,047,400 vehicle-miles traveled per day (≈382 million per year) across its 454 miles of monitored roads. About 1 in 12 vehicles is a truck, fewer than the 1 in 9 across Iowa.

Busier roads than 85% of counties in Iowa

At 2,761 vehicles per day, the average road in Clinton carries somewhat less traffic than the state average of 3,042 (9% less). In total volume terms, its road network carries about 1.3% of Iowa's statewide total of vehicle-miles. 85% of counties in Iowa see less traffic than Clinton's 2,761 vehicles per day.

Journey times here (32.8 minutes on average) closely track the state level. On travel time, Clinton runs shorter than 60% of counties in Iowa.

Congestion runs 18% lower than the state level, at a ratio of 9.3%, which means smoother traffic flow - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Clinton County, Iowa

Trafficvehicles per day6,375
Trucks10.6%
Average travel time39.4 min
Congestion ratio13.5%
Drivers’ average age50.5 yrs
Drivers’ average income$76,836

Travel in Clinton County, Iowa splits roughly evenly, with about half of it (53% of vehicle-miles) on highways. The average highway carries 6,375 vehicles per day, 171% more than the average non-highway road in the same area, which carries 2,351 vehicles per day.

With 22% of the road miles (100 miles in 366 segments), highways punch above their length, carrying 552,444 vehicle-miles traveled per day (≈202 million per year).

By highway travel volume, Clinton outranks 77% of counties in Iowa.

Lower highway truck share than 94% of counties in Iowa

The concentration of trucks on highways (10.6%) is 34% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 94% of counties in Iowa. Clinton's highway truck count is lower than 64% of counties in Iowa, at roughly 676 trucks per day.

non-highway traffic icon

Non-highway Traffic in Clinton County, Iowa

Trafficvehicles per day2,351
Trucks5.9%
Average travel time32.1 min
Congestion ratio8.9%
Drivers’ average age51.3 yrs
Drivers’ average income$73,443

Travel in Clinton County, Iowa splits roughly evenly, with about half of it (47% of vehicle-miles) on local roads. On the average non-highway road, that comes to 2,351 vehicles per day.

Local roads make up 78% of the monitored road miles (354 miles in 3,223 segments) but carry less than their share of travel: 494,955 vehicle-miles traveled per day (≈181 million per year). About 1 in 17 vehicles on non-highway roads is a truck (5.9%).

Local roads carry 45% fewer trucks by share than highways

The concentration of trucks on non-highway roads is 45% lower than on highways.

Non-highway congestion (8.9%) runs 20% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have higher average income than 59% of counties in Iowa. 61% of counties in Iowa have a younger driver population than Clinton.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 71% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 15% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
September–November is the high season, with volumes +10% versus the annual average.
Lowest month:
February is the quietest month, with volumes -21% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Clinton County, Iowa, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +10% in high season.

Clinton County vs. Iowa Traffic Comparison

Clinton County's biggest difference from the Iowa average is its highway truck share, 34% below it. Its truck share is also 24% below.

MetricClinton CountyIowa averageDifference
Traffic2,7613,042-9.2%
Truck % (Total Traffic)8.4%11.0%-24.0%
Truck % (Highway)10.6%16.1%-34.2%
Avg. Travel Time32.8 min33.0 min-0.5%

How Clinton County compares

Clinton County has the lowest truck share of its nearby counties

Nothing in this table sets Clinton County sharply apart from the 4 areas nearest to it, though 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.

Clinton 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
Clinton County2,7618.4%1,047,40032.8 min9.3%
Scott County, Iowa5,80410.2%3,742,05132.8 min14.4%
Rock Island County, Illinois4,9329.5%2,778,11632.1 min15.1%
Jackson County, Iowa1,54810.3%478,96834.1 min6.6%
Cedar County, Iowa1,82219.5%1,198,90131.4 min6.2%
Iowa average3,04211.0%N/A33.0 min11.4%

Clinton County ranked within Iowa

Truck share on highways places Clinton County #66 of 70 in Iowa - the bottom quarter of the state.

Clinton County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureClinton CountyIowa rank
Traffic volume (AADT)2,761#16 of 99
Highway vehicle-miles per day552,444#17 of 70
Truck share on highways10.6%#66 of 70
Highway trucks per day676#45 of 70
Average travel time32.8 min#59 of 99
Average driver income$74,703#41 of 99
Average driver age50.9 yrs#39 of 99

Clinton County ranks #16 of 99 on average daily traffic volume but #66 of 70 on truck share on highways - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Clinton County, Iowa

On their busiest stretches, the three busiest roads in Clinton County carry 20,141 vehicles a day on average, 7.3 times the typical road in the county (2,761).

US 61 is the busiest road, at 22,044 vehicles a day, 2,336 of them trucks (10.6%). It also carries the most trucks.

Trips using US 30 are long: a median of 46.4 minutes against 32.8 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 61Motorway · 22,044vehicles2,336trucks · 10.6%
Road class
Motorway
Congestion ratio
30.4%
Median trip time
44.7 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$86,292

Delays build on US 61: its congestion ratio of 30% over free-flow time is well above the county's 9%.

2US 30Motorway · 20,632vehicles2,268trucks · 11.0%
Road class
Motorway
Median trip time
46.4 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$87,122

A main artery: US 30's busiest stretch carries 7.5 times the county average; trucks are 11.0% of it, above the county-wide 8.4%.

3LincolnwayTrunk road · 17,748vehicles1,199trucks · 6.8%
Road class
Trunk road
Congestion ratio
24.4%
Median trip time
34.5 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$68,381

Travel on Lincolnway's busiest stretch runs 24% over free-flow time, against 9% across the county, so expect slower peak hours.

411th StreetSecondary road · 12,640vehicles510trucks · 4.0%
Road class
Secondary road
Congestion ratio
16.2%
Median trip time
29.2 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$92,382

11th Street carries 4.6 times the county average at its busiest, 510 of them trucks (4.0%, below the county-wide 8.4%).

5Washington BoulevardPrimary road · 10,997vehicles639trucks · 5.8%
Road class
Primary road
Congestion ratio
12.3%
Median trip time
27.9 min
Drivers’ median age
52.2 yrs
Drivers’ average income
$73,161

Washington Boulevard carries 4.0 times the county average on its busiest stretch, where the median trip lasts 27.9 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 61Motorway · #1 by traffic22,044vehicles2,336trucks · 10.6%
2US 30Motorway · #2 by traffic20,632vehicles2,268trucks · 11.0%
3LincolnwayTrunk road · #3 by traffic17,748vehicles1,199trucks · 6.8%
4Washington BoulevardPrimary road · #5 by traffic10,997vehicles639trucks · 5.8%
5Camanche AvenueTrunk road · 8,236vehicles587trucks · 7.1%
Road class
Trunk road
Congestion ratio
23.3%
Median trip time
33.3 min
Drivers’ median age
51.3 yrs
Drivers’ average income
$65,098

At 3.0 times the county average, Camanche Avenue draws drivers from neighborhoods averaging $65,098 in household income.

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

ClintonDepartment 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 Clinton County

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

Need segment-level traffic data?

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