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Traffic heat map of Cerro Gordo County, Iowa: 448 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 4th Street Southwest

Cerro Gordo County, Iowa Traffic Counts

How busy are the roads of Cerro Gordo County, Iowa? We measure 448 road miles, divided into 3,815 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, 4th Street Southwest, carries 17,874 vehicles a day, 6.3 times the average road. 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 Cerro Gordo County, Iowa

Traffic

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

vehicles per day2,836
Trucks

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

13.1%
Average travel time

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

35.3 min
Congestion ratio

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

8.9%
Drivers’ average age

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

52.2 yrs
Drivers’ average income

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

$71,815

Our data shows 2,836 vehicles per day on the average road in Cerro Gordo County, Iowa, and 1,261,561 vehicle-miles traveled per day (≈460 million per year) across its 448 miles of monitored roads. At 13.1%, the truck share runs above the 11.0% across Iowa: about 1 in 8 vehicles.

Busier roads than 86% of counties in Iowa

At 2,836 vehicles per day, the average road in Cerro Gordo carries somewhat less traffic than the state average of 3,042 (7% less). Across the whole network, that travel is about 1.5% of Iowa's statewide total. By volume, Cerro Gordo's 2,836 vehicles per day outpaces 86% of counties in Iowa.

Journey times run 7% higher than the state level, at 35.3 minutes on average. Its average travel time of 35.3 minutes is longer than 72% of counties in Iowa.

The congestion ratio of 8.9% is 22% lower, pointing to smoother traffic flow than the state level - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Cerro Gordo County, Iowa

Trafficvehicles per day5,376
Trucks22.5%
Average travel time54.5 min
Congestion ratio11.5%
Drivers’ average age53.5 yrs
Drivers’ average income$76,074

Highways carry a significant share of travel in Cerro Gordo County, Iowa: 38% of all vehicle-miles. The average highway carries 5,376 vehicles per day, 95% more than the average non-highway road in the same area, which carries 2,754 vehicles per day.

Highways make up 19% of the monitored road miles (86 miles, 119 segments), so they carry more than their share: 483,767 vehicle-miles traveled per day (≈177 million per year).

That is more highway travel volume than 72% of counties in Iowa.

Higher highway truck share than 83% of counties in Iowa

Highway truck concentration here runs 40% higher than the state average, at 22.5%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

By truck concentration, highways here outrank 83% of counties in Iowa. Cerro Gordo's highway truck count is higher than 67% of counties in Iowa, at roughly 1,211 trucks per day.

non-highway traffic icon

Non-highway Traffic in Cerro Gordo County, Iowa

Trafficvehicles per day2,754
Trucks7.2%
Average travel time34.7 min
Congestion ratio8.8%
Drivers’ average age52.1 yrs
Drivers’ average income$71,164

Local roads carry more than half of all travel in Cerro Gordo County, Iowa (62% of vehicle-miles). The average non-highway road carries 2,754 vehicles per day.

Spread over 362 miles and 3,696 segments, 81% of the road network, local roads carry a lighter load per mile: 777,795 vehicle-miles traveled per day (≈284 million per year). About 1 in 14 vehicles on non-highway roads is a truck (7.2%).

Older drivers than 84% of counties in Iowa

Compared to highways, non-highway routes see 68% fewer trucks by share.

At 21% lower than the state level, the non-highway congestion ratio of 8.8% signals easier movement on local roads.

Cerro Gordo's average driver income is lower than 51% of counties in Iowa. Cerro Gordo's median driver age is higher than 84% of counties in Iowa.

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 69% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 12% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +10% versus the annual average.
Lowest month:
January is the quietest month, with volumes -16% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Cerro Gordo 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.

Cerro Gordo County vs. Iowa Traffic Comparison

The highway truck share sets Cerro Gordo County apart: 40% above the Iowa average. Its truck share is also 19% above.

MetricCerro Gordo CountyIowa averageDifference
Traffic2,8363,042-6.7%
Truck % (Total Traffic)13.1%11.0%+18.9%
Truck % (Highway)22.5%16.1%+39.9%
Avg. Travel Time35.3 min33.0 min+6.9%

How Cerro Gordo County compares

Cerro Gordo County moves more traffic than any nearby county

Against the 4 nearest areas, Cerro Gordo County carries 108.4% more traffic on a typical road and is 50.0% more congested; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Cerro Gordo 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
Cerro Gordo County2,83613.1%1,261,56135.3 min8.9%
Worth County, Iowa1,24418.8%527,60833.6 min5.3%
Franklin County, Iowa1,36015.8%587,94535.0 min6.1%
Floyd County, Iowa1,81011.6%533,60837.2 min6.7%
Hancock County, Iowa1,0299.2%275,79936.4 min5.6%
Iowa average3,04211.0%N/A33.0 min11.4%

Cerro Gordo County ranked within Iowa

Average daily traffic volume places Cerro Gordo County #15 of 99 in Iowa - the top quarter of the state.

Cerro Gordo County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureCerro Gordo CountyIowa rank
Traffic volume (AADT)2,836#15 of 99
Highway vehicle-miles per day483,767#20 of 70
Truck share on highways22.5%#13 of 70
Highway trucks per day1,211#24 of 70
Average travel time35.3 min#28 of 99
Average driver income$71,815#51 of 99
Average driver age52.2 yrs#17 of 99

Busiest roads in Cerro Gordo County, Iowa

The three busiest roads in Cerro Gordo County average 16,268 vehicles a day, 5.7 times the county average of 2,836 across all its monitored roads.

4th Street Southwest is the busiest road, at 17,874 vehicles a day, 1,142 of them trucks (6.4%). Avenue of the Saints carries the most trucks, 4,131 a day (25.9% of its traffic), although it ranks #2 for all traffic.

I 35 carries longer journeys than most roads here, with a median trip of 58.5 minutes against 35.3 county-wide.

Freight stands out on Avenue of the Saints and I 35: trucks are 25.9% and 21.9% of the traffic there, against 13.1% county-wide.

Few trucks use 4th Street Southwest: 6.4% of its traffic, under half the county's 13.1%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
14th Street SouthwestPrimary road · 17,874vehicles1,142trucks · 6.4%
Road class
Primary road
Congestion ratio
24.7%
Median trip time
34.4 min
Drivers’ median age
52.0 yrs
Drivers’ average income
$67,841

Delays build on 4th Street Southwest: its congestion ratio of 25% over free-flow time is well above the county's 9%.

2Avenue of the SaintsMotorway · 15,976vehicles4,131trucks · 25.9%
Road class
Motorway
Congestion ratio
12.4%
Median trip time
54.7 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$78,119

Drivers on Avenue of the Saints are on long journeys, a median 54.7 minutes against 35.3 county-wide: a through route more than a local street.

3I 35 Business / US 18Primary road · 14,954vehicles1,327trucks · 8.9%
Road class
Primary road
Congestion ratio
19.2%
Median trip time
34.1 min
Drivers’ median age
51.9 yrs
Drivers’ average income
$73,261

I 35 Business / US 18 is a trunk route for the county, carrying 5.3 times the county average on its busiest stretch; trucks are 8.9% of it, below the county-wide 13.1%.

4I 35Motorway · 11,494vehicles2,513trucks · 21.9%
Road class
Motorway
Congestion ratio
13.6%
Median trip time
58.5 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$75,627

The busiest stretch of I 35 carries 4.1 times the county average; trucks are 21.9% of it, above the county-wide 13.1%.

5US 18Primary road · 10,890vehicles743trucks · 6.8%
Road class
Primary road
Congestion ratio
27.0%
Median trip time
31.9 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$74,270

Travel on US 18's busiest stretch runs 27% over free-flow time, against 9% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Avenue of the SaintsMotorway · #2 by traffic15,976vehicles4,131trucks · 25.9%
2I 35Motorway · #4 by traffic11,494vehicles2,513trucks · 21.9%
3I 35 Business / US 18Primary road · #3 by traffic14,954vehicles1,327trucks · 8.9%
44th Street SouthwestPrimary road · #1 by traffic17,874vehicles1,142trucks · 6.4%
5US 18Primary road · #5 by traffic10,890vehicles743trucks · 6.8%
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

Cerro GordoDepartment 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 Cerro Gordo County

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

Need segment-level traffic data?

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