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Harrison County, Iowa Traffic Counts

This page delivers traffic analytics for Harrison County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Harrison County, Iowa among 328 road miles divided in 2,179 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 794 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.
Data current as of:
Q3 2026
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total traffic icon

Total Traffic Volume & Performance

Traffic

2,050

Trucks

15.4%

Average travel time

35.6 min

Drivers’ average age

50.0 yrs

Drivers’ average income

$79,841

Our data indicates an estimated average traffic volume of 2,050 vehicles per day in Harrison County, Iowa that results in 854,649 vehicle-miles traveled per day (≈312 million per year). The traffic stream is comprised of an average of 1 truck for every 7 vehicles. Typical time spent behind the wheel per trip is 35.6 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Iowa state averages: Harrison's average daily traffic volume is 33% lower than the state average - 2,050 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 854,649 vehicle-miles traveled per day (≈312 million per year), roughly 1.0% of Iowa's statewide total. The average trip takes 35.6 minutes, 8% higher than the state level. Harrison carries more traffic than 68% of counties in Iowa. 76% of counties in Iowa have a shorter average travel time than Harrison's 35.6 minutes.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

5,236

Trucks

19.9%

Average travel time

60.1 min

Drivers’ average age

48.9 yrs

Drivers’ average income

$80,122

A significant volume of traffic in Harrison County, Iowa utilizes the highway network. The average highway carries 5,236 vehicles per day, 184% more than the average non-highway road in the same area, which carries 1,846 vehicles per day. That average covers 74 highway road miles divided in 131 segments (average segment length 2,976 ft), together carrying 531,797 vehicle-miles traveled per day (≈194 million per year). That is more highway travel volume than 75% of counties in Iowa. Trucks constitute 19.9% of highway traffic.

Analytical insight

Highway truck concentration here runs 24% higher than the state average, at 19.9% - positioning Harrison as a significant freight corridor. For logistics operators, this validates the importance of highway access. 75% of counties in Iowa see a lower highway truck share than Harrison's 19.9%. Harrison's highway truck count is higher than 71% of counties in Iowa, at roughly 1,042 trucks per day.
non-highway traffic icon

Non-highway traffic

Traffic

1,846

Trucks

7.9%

Average travel time

34.0 min

Drivers’ average age

50.5 yrs

Drivers’ average income

$79,696

The non-highway road network in Harrison County, Iowa supports a substantial volume of traffic. The average non-highway road carries 1,846 vehicles per day, 65% less than the average highway in the same area, which carries 5,236 vehicles per day. That average covers 254 non-highway road miles divided in 2,048 segments (average segment length 654 ft), together carrying 322,852 vehicle-miles traveled per day (≈118 million per year). Trucks constitute 7.9% of non-highway traffic.

Analytical insight

Compared to highways, non-highway routes see 60% fewer trucks by share. 76% of counties in Iowa see shorter overall travel times than Harrison. Harrison's average driver income exceeds 79% of counties in Iowa. Harrison's median driver age is higher than 45% of counties in Iowa.

Time-of-Day & Seasonal Patterns

Analytical insight

In Harrison County, Iowa, the peak hour concentrates about 8% of the day's traffic.

Traffic Flow Profile Comparison

Metric

Harrison

Iowa
Average

Difference

Traffic

2,050

3,042

-32.6%

Truck % (Total Traffic)

15.4%

11.0%

+39.6%

Truck % (Highway)

19.9%

16.1%

+23.6%

Avg. Travel Time

35.6 min

33.0 min

+7.8%

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

IowaDepartment of Transportation

Historical traffic pattern databases

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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