This page delivers traffic analytics for Marion County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Marion County, Iowa among 292 road miles divided in 2,558 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 603 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.
2,526
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
10.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.3 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.
7.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.0 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$85,596
Our data indicates an estimated average traffic volume of 2,526 vehicles per day in Marion County, Iowa that results in 717,225 vehicle-miles traveled per day (≈262 million per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 30.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Iowa state averages: Marion's average daily traffic volume is 17% lower than the state average - 2,526 vehicles per day against 3,042 - suggesting less traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 717,225 vehicle-miles traveled per day (≈262 million per year), roughly 0.9% of Iowa's statewide total. The average trip takes 30.3 minutes, 8% lower than the state level. Congestion runs 35% lower than the state level, at a ratio of 7.4% - smoother traffic flow - crucial for traffic control improvement and logistics planning. Marion carries more traffic than 81% of counties in Iowa. On travel time, Marion runs longer than 9% of counties in Iowa.
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.
3,640
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
45.7 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.
8.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$85,887
A significant volume of traffic in Marion County, Iowa utilizes the highway network. The average highway carries 3,640 vehicles per day, 50% more than the average non-highway road in the same area, which carries 2,425 vehicles per day. That average covers 80 highway road miles divided in 214 segments (average segment length 1,977 ft), together carrying 312,780 vehicle-miles traveled per day (≈114 million per year). Trucks constitute 12.9% of highway traffic.
Analytical insight
The concentration of trucks on highways (12.9%) is 20% lower than the state average for similar road classifications. This indicates Marion serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. 28% of counties in Iowa see a lower highway truck share than Marion's 12.9%. Marion's highway truck count is higher than 26% of counties in Iowa, at roughly 471 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,425
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
28.9 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.
7.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$85,470
The non-highway road network in Marion County, Iowa supports a substantial volume of traffic. The average non-highway road carries 2,425 vehicles per day, 33% less than the average highway in the same area, which carries 3,640 vehicles per day. That average covers 212 non-highway road miles divided in 2,344 segments (average segment length 478 ft), together carrying 404,445 vehicle-miles traveled per day (≈148 million per year). Trucks constitute 8.0% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 38% lower than on highways. The non-highway congestion ratio of 7.4% is 34% lower than the state level, suggesting more efficient local mobility than the state average. Overall, average travel time here is longer than 9% of counties in Iowa. 90% of counties in Iowa see lower average driver income among trip origins than Marion. The driver population here skews older than 28% of counties in Iowa.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 74% higher than the daily average.
Weekend traffic:
Weekend volumes run about 16% below weekday levels.
Seasonal Fluctuation
Busy season:
April–June is the high season, with volumes +7% versus the annual average.
Lowest month:
January is the quietest month, with volumes -15% versus the annual average.
Analytical insight
In Marion County, Iowa, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +7% in high season.
Traffic Flow Profile Comparison
Metric
Marion
Iowa
Average
Difference
Traffic
2,526
3,042
-16.9%
Truck % (Total Traffic)
10.2%
11.0%
-7.7%
Truck % (Highway)
12.9%
16.1%
-19.6%
Avg. Travel Time
30.3 min
33.0 min
-8.3%
Frequently Asked Questions
The average daily traffic volume is calculated at 2,526 vehicles per day, providing a baseline for daily operations and site assessment.
Marion's highway truck share of 12.9% is higher than 28% of counties in Iowa.
The average travel time for drivers is 30.3 minutes, offering a standard metric for commute and delivery route planning.
Traffic volumes are typically 7% higher during April–June. Volumes drop to their lowest levels in January, averaging 2,138 vehicles per day - a 15% decrease from the annual average.
Drivers on Marion roads have a median age of 48 years, and the median household income of the neighborhoods trips originate from averages $85,596 - useful context for retail siting and customer profiling.
Trucks account for approximately 10.2% of the total traffic mix across all road types, with a significantly higher concentration of 12.9% on highways.
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)
