This page delivers traffic analytics for Grundy County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Grundy County, Iowa among 314 road miles divided in 2,523 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 657 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.
1,457
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.6%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.8 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.
5.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$81,004
Our data indicates an estimated average traffic volume of 1,457 vehicles per day in Grundy County, Iowa that results in 588,704 vehicle-miles traveled per day (≈215 million per year). The traffic stream is comprised of an average of 1 truck for every 8 vehicles. Typical time spent behind the wheel per trip is 32.8 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Iowa state averages: Grundy's average daily traffic volume is 52% lower than the state average - 1,457 vehicles per day against 3,042 - suggesting less traffic load per road, a critical factor for logistics and site planning. In total volume terms, its road network carries 588,704 vehicle-miles traveled per day (≈215 million per year), about 0.7% of Iowa's statewide total. At 32.8 minutes, the average travel time matches the state level closely. Congestion runs 51% lower than the state level, at a ratio of 5.6% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, Grundy's 1,457 vehicles per day outpaces 38% of counties in Iowa. On travel time, Grundy runs longer than 39% 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.
4,058
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
16.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
54.3 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.
9.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
45.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$79,011
A significant volume of traffic in Grundy County, Iowa utilizes the highway network. The average highway carries 4,058 vehicles per day, 189% more than the average non-highway road in the same area, which carries 1,404 vehicles per day. That average covers 53 highway road miles divided in 50 segments (average segment length 5,574 ft), together carrying 267,341 vehicle-miles traveled per day (≈97.6 million per year). Trucks constitute 16.9% of highway traffic.
Analytical insight
The concentration of trucks on highways (16.9%) is 5% higher than the state average for similar road classifications. This indicates Grundy serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. By truck concentration, highways here outrank 68% of counties in Iowa. Grundy's highway truck count is higher than 58% of counties in Iowa, at roughly 687 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
1,404
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.3 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.
5.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$82,424
The non-highway road network in Grundy County, Iowa supports a substantial volume of traffic. The average non-highway road carries 1,404 vehicles per day, 65% less than the average highway in the same area, which carries 4,058 vehicles per day. That average covers 261 non-highway road miles divided in 2,473 segments (average segment length 557 ft), together carrying 321,363 vehicle-miles traveled per day (≈117 million per year). Trucks constitute 8.9% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 47% lower than the highway network. The non-highway congestion ratio of 5.5% is 50% lower than the state level, suggesting more efficient local mobility than the state average. 39% of counties in Iowa see shorter overall travel times than Grundy. Trip origins here have higher average income than 82% of counties in Iowa. 36% of counties in Iowa have a younger driver population than Grundy.
Time-of-Day & Seasonal Patterns
Analytical insight
In Grundy County, Iowa, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
Grundy
Iowa
Average
Difference
Traffic
1,457
3,042
-52.1%
Truck % (Total Traffic)
12.6%
11.0%
+14.2%
Truck % (Highway)
16.9%
16.1%
+5.2%
Avg. Travel Time
32.8 min
33.0 min
-0.7%
Frequently Asked Questions
The average daily traffic volume is calculated at 1,457 vehicles per day, providing a baseline for daily operations and site assessment.
Grundy's highway truck share of 16.9% is higher than 68% of counties in Iowa.
Drivers on Grundy roads have a median age of 48 years, and the median household income of the neighborhoods trips originate from averages $81,004 - useful context for retail siting and customer profiling.
The average travel time for drivers is 32.8 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 7:00 AM and 10:00 AM in the morning and between 3:00 PM and 7:00 PM in the evening - about 78% above the daily 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)
