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Traffic heat map of Boone County, Iowa: 314 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 230th Street and US 30

Boone County, Iowa Traffic Counts

TrafficZoom tracks traffic on 314 road miles in Boone County, Iowa, divided into 3,622 segments averaging 458 ft. Its busiest road, 230th Street, carries 18,692 vehicles a day, 9.1 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Boone County, Iowa

Traffic

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

vehicles per day2,046
Trucks

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

9.4%
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.

8.0%
Drivers’ average age

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

43.5 yrs
Drivers’ average income

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

$78,446

Our data shows 2,046 vehicles per day on the average road in Boone County, Iowa, and 693,007 vehicle-miles traveled per day (≈253 million per year) across its 314 miles of monitored roads. Trucks are 9.4% of traffic, close to the 11.0% across Iowa.

Longer trips than 73% of counties in Iowa

At 2,046 vehicles per day, the average monitored road in Boone carries 33% less traffic than the state average of 3,042, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.8% of Iowa's statewide total. 67% of counties in Iowa see less traffic than Boone's 2,046 vehicles per day.

Journey times run 7% higher than the state level, at 35.3 minutes on average. On travel time, Boone runs longer than 73% of counties in Iowa.

The congestion ratio of 8.0% is 30% lower, pointing to smoother traffic flow than the state level - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Boone County, Iowa

Trafficvehicles per day4,339
Trucks11.2%
Average travel time42.2 min
Congestion ratio11.0%
Drivers’ average age42.5 yrs
Drivers’ average income$75,553

Travel in Boone County, Iowa splits roughly evenly, with about half of it (48% of vehicle-miles) on highways. The average highway carries 4,339 vehicles per day, 139% more than the average non-highway road in the same area, which carries 1,817 vehicles per day.

Highways make up 21% of the monitored road miles (65 miles, 330 segments), so they carry more than their share: 335,615 vehicle-miles traveled per day (≈122 million per year).

That is more highway travel volume than 54% of counties in Iowa.

Lower highway truck share than 86% of counties in Iowa

The concentration of trucks on highways (11.2%) is 30% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 86% of counties in Iowa. 65% of counties in Iowa see more highway trucks per day than Boone's roughly 488.

non-highway traffic icon

Non-highway Traffic in Boone County, Iowa

Trafficvehicles per day1,817
Trucks7.6%
Average travel time34.7 min
Congestion ratio7.8%
Drivers’ average age44.2 yrs
Drivers’ average income$80,688

Travel in Boone County, Iowa splits roughly evenly, with about half of it (52% of vehicle-miles) on local roads. On the average non-highway road, that comes to 1,817 vehicles per day.

Local roads make up 79% of the monitored road miles (249 miles in 3,292 segments) but carry less than their share of travel: 357,392 vehicle-miles traveled per day (≈130 million per year). Trucks make up 7.6% of non-highway traffic, about 1 in 13 vehicles.

Younger drivers than 96% of counties in Iowa

Compared to highways, non-highway routes see 32% fewer trucks by share.

At 30% lower than the state level, the non-highway congestion ratio of 7.8% signals easier movement on local roads.

Trip origins here have higher average income than 68% of counties in Iowa. The driver population here skews younger than 96% of counties in Iowa.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 4:00 PM–7:00 PM, with volumes reaching approximately 81% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 27% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October 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 - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Boone County, Iowa, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +7% in high season.

Boone County vs. Iowa Traffic Comparison

The average daily traffic per road sets Boone County apart: 33% below the Iowa average. Its highway truck share is also 30% below.

MetricBoone CountyIowa averageDifference
Traffic2,0463,042-32.7%
Truck % (Total Traffic)9.4%11.0%-14.9%
Truck % (Highway)11.2%16.1%-30.2%
Avg. Travel Time35.3 min33.0 min+7.1%

How Boone County compares

Boone County against nearby counties

Against the 4 nearest areas, Boone County moves 47.3% of the total daily travel and is 24.3% less congested; it has the third busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Boone 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
Boone County2,0469.4%693,00735.3 min8.0%
Dallas County, Iowa3,93310.0%2,199,40327.6 min13.0%
Greene County, Iowa9059.8%203,71141.5 min11.2%
Story County, Iowa4,22911.3%2,315,09031.1 min12.1%
Hamilton County, Iowa1,47017.2%1,145,47433.6 min6.1%
Iowa average3,04211.0%N/A33.0 min11.4%

Boone County ranked within Iowa

Boone County sits in the bottom quarter of the Iowa field on average driver age, at #95 of 99.

Boone County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureBoone CountyIowa rank
Traffic volume (AADT)2,046#33 of 99
Highway vehicle-miles per day335,615#33 of 70
Truck share on highways11.2%#60 of 70
Highway trucks per day488#46 of 70
Average travel time35.3 min#27 of 99
Average driver income$78,446#32 of 99
Average driver age43.5 yrs#95 of 99

Boone County ranks #27 of 99 on average travel time but #95 of 99 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Boone County, Iowa

Traffic concentrates on a few corridors: the three busiest roads average 14,481 vehicles a day, against 2,046 on the average road in Boone County.

230th Street leads with 18,692 vehicles a day, 1,988 of them trucks (10.6%). It tops the truck ranking too, with the most trucks.

Drivers on IA 17 come from neighborhoods with an average household income of $105,254, 34% above the county average of $78,446.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1230th StreetMotorway · 18,692vehicles1,988trucks · 10.6%
Road class
Motorway
Congestion ratio
22.8%
Median trip time
38.9 min
Drivers’ median age
40.3 yrs
Drivers’ average income
$75,601

Travel on 230th Street's busiest stretch runs 23% over free-flow time, against 8% across the county, so expect slower peak hours.

2US 30Motorway · 14,909vehicles1,521trucks · 10.2%
Road class
Motorway
Median trip time
37.5 min
Drivers’ median age
41.1 yrs
Drivers’ average income
$74,341

A main artery: US 30's busiest stretch carries 7.3 times the county average; trucks are 10.2% of it, above the county-wide 9.4%.

3220th StreetTrunk road · 9,841vehicles1,078trucks · 11.0%
Road class
Trunk road
Congestion ratio
14.0%
Median trip time
41.5 min
Drivers’ median age
42.8 yrs
Drivers’ average income
$74,439

220th Street peaks at 9,841 vehicles a day, 4.8 times the county average; trucks are 11.0% of it, above the county-wide 9.4%.

4Story StreetSecondary road · 9,658vehicles327trucks · 3.4%
Road class
Secondary road
Congestion ratio
22.6%
Median trip time
36.6 min
Drivers’ median age
41.9 yrs
Drivers’ average income
$71,788

Story Street is one of the more congested roads here: trips take 23% longer than at free-flow speed, against 8% county-wide.

5Kennedy AvenuePrimary road · 7,880vehicles678trucks · 8.6%
Road class
Primary road
Congestion ratio
18.7%
Median trip time
34.5 min
Drivers’ median age
43.1 yrs
Drivers’ average income
$101,283

Kennedy Avenue carries 3.9 times the county average at its busiest, 678 of them trucks (8.6%, below the county-wide 9.4%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1230th StreetMotorway · #1 by traffic18,692vehicles1,988trucks · 10.6%
2US 30Motorway · #2 by traffic14,909vehicles1,521trucks · 10.2%
3220th StreetTrunk road · #3 by traffic9,841vehicles1,078trucks · 11.0%
4Kennedy AvenuePrimary road · #5 by traffic7,880vehicles678trucks · 8.6%
5IA 17Primary road · 6,512vehicles630trucks · 9.7%
Road class
Primary road
Congestion ratio
15.2%
Median trip time
37.1 min
Drivers’ median age
43.5 yrs
Drivers’ average income
$105,254

IA 17 carries 3.2 times the county average on its busiest stretch, where the median trip lasts 37.1 minutes.

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

BooneDepartment 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 Boone County

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

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.