This page delivers traffic analytics for Clarke County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Clarke County, Iowa among 145 road miles divided in 1,145 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 668 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
2,587
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
19.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.6 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
4.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$71,933
Our data indicates an estimated average traffic volume of 2,587 vehicles per day in Clarke County, Iowa that results in 494,892 vehicle-miles traveled per day (≈181 million per year). The traffic stream is comprised of an average of 1 truck for every 5 vehicles. Typical time spent behind the wheel per trip is 32.6 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Iowa state averages: Clarke sees 15% lower average daily traffic volume than the state average (2,587 vehicles per day against 3,042), suggesting less demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries 494,892 vehicle-miles traveled per day (≈181 million per year), about 0.6% of Iowa's statewide total. At 32.6 minutes, the average travel time is 1% lower than the state level. Congestion runs 65% lower than the state level, at a ratio of 4.0% - smoother traffic flow - crucial for traffic control improvement and logistics planning. 83% of counties in Iowa see less traffic than Clarke's 2,587 vehicles per day. 36% of counties in Iowa have a shorter average travel time than Clarke's 32.6 minutes.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
7,939
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
24.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
50.5 min
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$71,938
A significant volume of traffic in Clarke County, Iowa utilizes the highway network. The average highway carries 7,939 vehicles per day, 236% more than the average non-highway road in the same area, which carries 2,363 vehicles per day. That average covers 40 highway road miles divided in 46 segments (average segment length 4,611 ft), together carrying 338,354 vehicle-miles traveled per day (≈123 million per year). 55% of counties in Iowa move less traffic on their highways. Trucks constitute 24.7% of highway traffic.
Analytical insight
At 24.7%, highway truck share is 53% higher than the state average, marking Clarke as a significant freight corridor - underscoring the importance of highway access for logistics operators. Clarke's highway truck share (24.7%) is higher than 94% of counties in Iowa. 86% of counties in Iowa see fewer highway trucks per day than Clarke's roughly 1,958.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,363
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
9.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
4.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$71,930
The non-highway road network in Clarke County, Iowa supports a substantial volume of traffic. The average non-highway road carries 2,363 vehicles per day, 70% less than the average highway in the same area, which carries 7,939 vehicles per day. That average covers 105 non-highway road miles divided in 1,099 segments (average segment length 503 ft), together carrying 156,538 vehicle-miles traveled per day (≈57.1 million per year). Trucks constitute 9.1% of non-highway traffic.
Analytical insight
Compared to highways, non-highway routes see 63% fewer trucks by share. Non-highway congestion (4.0%) runs 64% lower than the state average, pointing to smoother local traffic flow. Overall, average travel time here is longer than 36% of counties in Iowa. 52% of counties in Iowa see lower average driver income among trip origins than Clarke. 23% of counties in Iowa have a younger driver population than Clarke.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 9:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 72% higher than the daily average.
Weekend traffic:
Weekend volumes run about 23% below weekday levels.
Seasonal Fluctuation
Busy season:
April–June is the high season, with volumes +8% versus the annual average.
Lowest month:
January is the quietest month, with volumes -13% versus the annual average.
Analytical insight
In Clarke County, Iowa, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +8% in high season.
Traffic Flow Profile Comparison
Metric
Clarke
Iowa
Average
Difference
Traffic
2,587
3,042
-14.9%
Truck % (Total Traffic)
19.7%
11.0%
+79.2%
Truck % (Highway)
24.7%
16.1%
+53.2%
Avg. Travel Time
32.6 min
33.0 min
-1.2%
Frequently Asked Questions
The average daily traffic volume is calculated at 2,587 vehicles per day, providing a baseline for daily operations and site assessment.
Clarke's highway truck share of 24.7% is higher than 94% of counties in Iowa.
Approximately 54% of highway traffic and 17% of non-highway traffic consists of vehicles whose trip originates outside Clarke County, Iowa. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
The average travel time for drivers is 32.6 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 9:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 72% above the daily average.
Traffic volumes are typically 8% higher during April–June. Volumes drop to their lowest levels in January, averaging 2,238 vehicles per day - a 13% decrease from the annual average.
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)
