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Traffic heat map of Howard County, Iowa: 178 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 2nd Avenue Southeast

Howard County, Iowa Traffic Counts

Traffic analytics for Howard County, Iowa, calculated from real-world mobile and sensor networks on 1,762 road segments (178 road miles, about 534 ft each). Its busiest road, 2nd Avenue Southeast, carries 5,852 vehicles a day, 4.7 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Howard County, Iowa

Traffic

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

vehicles per day1,242
Trucks

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

12.3%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

33.6 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

5.8%
Drivers’ average age

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

50.5 yrs
Drivers’ average income

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

$71,704

The average monitored road in Howard County, Iowa carries 1,242 vehicles per day. Across its 178 miles of monitored roads, that adds up to 198,062 vehicle-miles traveled per day (≈72.3 million per year). Trucks are 12.3% of traffic, close to the 11.0% across Iowa.

Quieter roads than 83% of counties in Iowa

At 1,242 vehicles per day, the average monitored road in Howard carries 59% less traffic than the state average of 3,042, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Howard accounts for about 0.2% of Iowa's statewide total of vehicle-miles. 83% of counties in Iowa see more traffic than Howard's 1,242 vehicles per day.

Journey times here (33.6 minutes on average) closely track the state level. On travel time, Howard runs longer than 52% of counties in Iowa.

Congestion runs 49% lower than the state level, at a ratio of 5.8%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Howard County, Iowa

Trafficvehicles per day3,190
Trucks17.7%
Average travel time67.6 min
Drivers’ average age50.2 yrs
Drivers’ average income$73,030

Highways carry a significant share of travel in Howard County, Iowa: 36% of all vehicle-miles. The average highway carries 3,190 vehicles per day, 200% more than the average non-highway road in the same area, which carries 1,064 vehicles per day.

That comes from just 12% of the monitored road miles: 22 miles in 148 segments, carrying 72,152 vehicle-miles traveled per day (≈26.3 million per year).

Higher highway truck share than 72% of counties in Iowa

The concentration of trucks on highways (17.7%) is 10% higher than the state average for similar road classifications. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.

Howard's highway truck share (17.7%) is higher than 72% of counties in Iowa. Howard's highway truck count is lower than 62% of counties in Iowa, at roughly 564 trucks per day.

non-highway traffic icon

Non-highway Traffic in Howard County, Iowa

Trafficvehicles per day1,064
Trucks9.3%
Average travel time30.5 min
Congestion ratio5.8%
Drivers’ average age50.5 yrs
Drivers’ average income$71,520

A little more than half of the driving in Howard County, Iowa happens on local roads: 64% of all vehicle-miles. On the average non-highway road, that comes to 1,064 vehicles per day.

Local roads make up 88% of the monitored road miles (157 miles in 1,614 segments) but carry less than their share of travel: 125,910 vehicle-miles traveled per day (≈46.0 million per year). About 1 in 11 vehicles on non-highway roads is a truck (9.3%).

Local congestion 48% below the Iowa average

Non-highway roads carry a truck concentration that's 48% lower than the highway network.

Non-highway congestion (5.8%) runs 48% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have lower average income than 54% of counties in Iowa. Howard's median driver age is higher than 52% 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 a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 72% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 16% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
September–November is the high season, with volumes +9% versus the annual average.
Lowest month:
January is the quietest month, with volumes -16% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Howard County, Iowa, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +9% in high season.

Howard County vs. Iowa Traffic Comparison

Howard County's biggest difference from the Iowa average is its average daily traffic per road, 59% below it.

MetricHoward CountyIowa averageDifference
Traffic1,2423,042-59.2%
Truck % (Total Traffic)12.3%11.0%+12.1%
Truck % (Highway)17.7%16.1%+9.9%
Avg. Travel Time33.6 min33.0 min+1.9%

How Howard County compares

Howard County against nearby counties

Nothing in this table sets Howard County sharply apart from the 4 areas nearest to it, though it has the fourth busiest roads of the five.

Howard 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
Howard County1,24212.3%198,06233.6 min5.8%
Winneshiek County, Iowa1,7719.7%452,59531.0 min8.1%
Mitchell County, Iowa1,0969.2%178,15132.4 min5.2%
Fillmore County, Minnesota1,51510.3%534,40033.1 min5.7%
Chickasaw County, Iowa1,57911.2%355,06434.9 min6.0%
Iowa average3,04211.0%N/A33.0 min11.4%

Howard County ranked within Iowa

Howard County sits in the bottom quarter of the Iowa field on highway travel volume, at #67 of 70.

Howard County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureHoward CountyIowa rank
Traffic volume (AADT)1,242#82 of 99
Highway vehicle-miles per day72,152#67 of 70
Truck share on highways17.7%#20 of 70
Highway trucks per day564#44 of 70
Average travel time33.6 min#48 of 99
Average driver income$71,704#54 of 99
Average driver age50.5 yrs#48 of 99

Howard County ranks #20 of 70 on truck share on highways but #67 of 70 on highway travel volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Howard County, Iowa

On their busiest stretches, the three busiest roads in Howard County carry 4,779 vehicles a day on average, 3.8 times the typical road in the county (1,242).

2nd Avenue Southeast is the busiest road, at 5,852 vehicles a day, 595 of them trucks (10.2%). US 63 carries the most trucks, 612 a day (17.7% of its traffic), although it ranks #4 for all traffic.

Main Street carries longer journeys than most roads here, with a median trip of 74.4 minutes against 33.6 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
12nd Avenue SoutheastPrimary road · 5,852vehicles595trucks · 10.2%
Road class
Primary road
Congestion ratio
14.6%
Median trip time
27.6 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$69,947

At 4.7 times the county average, 2nd Avenue Southeast draws drivers from neighborhoods averaging $69,947 in household income.

22nd Avenue SouthwestPrimary road · 4,582vehicles429trucks · 9.3%
Road class
Primary road
Congestion ratio
10.6%
Median trip time
31.0 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$69,595

The busiest stretch of 2nd Avenue Southwest carries 3.7 times the county average; trucks are 9.3% of it, below the county-wide 12.3%.

3IA 9Primary road · 3,904vehicles438trucks · 11.2%
Road class
Primary road
Congestion ratio
9.3%
Median trip time
28.0 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$72,471

On its busiest stretch, IA 9 carries 3.1 times the county average; trucks are 11.2% of it, below the county-wide 12.3%.

4US 63Trunk road · 3,464vehicles612trucks · 17.7%
Road class
Trunk road
Median trip time
73.4 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$75,015

US 63 carries through traffic: the median trip using it lasts 73.4 minutes, against 33.6 for the county.

5Main StreetTrunk road · 3,301vehicles554trucks · 16.8%
Road class
Trunk road
Median trip time
74.4 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$75,309

Main Street peaks at 3,301 vehicles a day, 2.7 times the county average; trucks are 16.8% of it, above the county-wide 12.3%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 63Trunk road · #4 by traffic3,464vehicles612trucks · 17.7%
22nd Avenue SoutheastPrimary road · #1 by traffic5,852vehicles595trucks · 10.2%
3Main StreetTrunk road · #5 by traffic3,301vehicles554trucks · 16.8%
4IA 9Primary road · #3 by traffic3,904vehicles438trucks · 11.2%
52nd Avenue SouthwestPrimary road · #2 by traffic4,582vehicles429trucks · 9.3%
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

HowardDepartment 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 Howard County

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

Need segment-level traffic data?

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