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Traffic heat map of Mills County, Iowa: 255 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 29 and US 34

Mills County, Iowa Traffic Counts

TrafficZoom tracks traffic on 255 road miles in Mills County, Iowa, divided into 2,629 segments averaging 513 ft. Its busiest road, I 29, carries 20,842 vehicles a day, 9.4 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 icon

Total Traffic Volume & Performance in Mills County, Iowa

Traffic

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

vehicles per day2,228
Trucks

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

11.5%
Average travel time

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

30.2 min
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.

$82,477

The average monitored road in Mills County, Iowa carries 2,228 vehicles per day. Across its 255 miles of monitored roads, that adds up to 740,144 vehicle-miles traveled per day (≈270 million per year). Trucks are 11.5% of traffic, close to the 11.0% across Iowa.

Shorter trips than 92% of counties in Iowa

At 2,228 vehicles per day, the average monitored road in Mills carries 27% less traffic than the state average of 3,042, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.9% of Iowa's statewide total. 72% of counties in Iowa see less traffic than Mills's 2,228 vehicles per day.

Journey times run 9% lower than the state level, at 30.2 minutes on average. On travel time, Mills runs shorter than 92% of counties in Iowa.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Mills County, Iowa

Trafficvehicles per day6,248
Trucks16.7%
Average travel time45.0 min
Drivers’ average age48.9 yrs
Drivers’ average income$78,796

Highways carry a significant share of travel in Mills County, Iowa: 45% of all vehicle-miles. The average highway carries 6,248 vehicles per day, 201% more than the average non-highway road in the same area, which carries 2,077 vehicles per day.

With 18% of the road miles (46 miles in 95 segments), highways punch above their length, carrying 330,126 vehicle-miles traveled per day (≈120 million per year).

52% of counties in Iowa move less traffic on their highways.

Higher highway truck share than 67% of counties in Iowa

At 16.7%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for Iowa: neither freight- nor commuter-dominated.

67% of counties in Iowa see a lower highway truck share than Mills's 16.7%. By raw truck volume, Mills carries more highway trucks than 65% of counties in Iowa.

non-highway traffic icon

Non-highway Traffic in Mills County, Iowa

Trafficvehicles per day2,077
Trucks7.3%
Average travel time29.6 min
Drivers’ average age51.1 yrs
Drivers’ average income$84,139

A little more than half of the driving in Mills County, Iowa happens on local roads: 55% of all vehicle-miles. A typical local road sees 2,077 vehicles per day.

Local roads make up 82% of the monitored road miles (209 miles in 2,534 segments) but carry less than their share of travel: 410,018 vehicle-miles traveled per day (≈150 million per year). The truck share on non-highway roads is 7.3%.

Drivers from higher-income areas than 85% of counties in Iowa

The concentration of trucks on non-highway roads is 56% lower than on highways.

85% of counties in Iowa see lower average driver income among trip origins than Mills. The driver population here skews older than 51% 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 84% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-4%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +13% versus the annual average.
Lowest month:
January is the quietest month, with volumes -18% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Mills County, Iowa, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +13% in high season.

Mills County vs. Iowa Traffic Comparison

The average daily traffic per road sets Mills County apart: 27% below the Iowa average.

MetricMills CountyIowa averageDifference
Traffic2,2283,042-26.7%
Truck % (Total Traffic)11.5%11.0%+4.5%
Truck % (Highway)16.7%16.1%+3.8%
Avg. Travel Time30.2 min33.0 min-8.5%

How Mills County compares

Mills County against nearby counties

Against the 4 nearest areas, Mills County moves 38.4% of the total daily travel and carries 33.6% less traffic on a typical road; it has the third busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Mills 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
Mills County2,22811.5%740,14430.2 minN/A
Fremont County, Iowa1,45217.6%553,95231.4 minN/A
Pottawattamie County, Iowa3,94015.7%3,112,04032.1 minN/A
Montgomery County, Iowa1,9339.1%246,57534.7 minN/A
Sarpy County, Nebraska6,0877.3%3,796,89429.5 min31.4%
Iowa average3,04211.0%N/A33.0 min11.4%

Mills County ranked within Iowa

Average travel time places Mills County #91 of 99 in Iowa - the bottom quarter of the state.

Mills County ranked among 99 county-level areas in Iowa (1 = highest); measures without data in every county rank a smaller field, down to 70.
MeasureMills CountyIowa rank
Traffic volume (AADT)2,228#28 of 99
Highway vehicle-miles per day330,126#34 of 70
Truck share on highways16.7%#24 of 70
Highway trucks per day1,044#25 of 70
Average travel time30.2 min#91 of 99
Average driver income$82,477#16 of 99
Average driver age50.5 yrs#49 of 99

The two ends of this table sit far apart: #16 of 99 on average driver income, against #91 of 99 on average travel time.

Busiest roads in Mills County, Iowa

The three busiest roads in Mills County average 13,909 vehicles a day, 6.2 times the county average of 2,228 across all its monitored roads.

I 29 leads with 20,842 vehicles a day, 3,176 of them trucks (15.2%). No other road comes close: US 34, in second place, carries 11,416. It also carries the most trucks.

Few trucks use Locust Street: 3.4% of its traffic, under half the county's 11.5%.

I 29 carries longer journeys than most roads here, with a median trip of 42.6 minutes against 30.2 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 29Motorway · 20,842vehicles3,176trucks · 15.2%
Road class
Motorway
Median trip time
42.6 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$78,734

I 29 is a trunk route for the county, carrying 9.4 times the county average on its busiest stretch; trucks are 15.2% of it, above the county-wide 11.5%.

2US 34Primary road · 11,416vehicles704trucks · 6.2%
Road class
Primary road
Median trip time
36.0 min
Drivers’ median age
50.6 yrs
Drivers’ average income
$80,714

US 34 carries 5.1 times the county average at its busiest, 704 of them trucks (6.2%, below the county-wide 11.5%).

3Locust StreetSecondary road · 9,471vehicles320trucks · 3.4%
Road class
Secondary road
Median trip time
24.3 min
Drivers’ median age
51.2 yrs
Drivers’ average income
$81,198

Locust Street carries 4.3 times the county average on its busiest stretch, where the median trip lasts 24.3 minutes.

4Sharp StreetSecondary road · 7,870vehicles282trucks · 3.6%
Road class
Secondary road
Median trip time
24.8 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$85,581

At 3.5 times the county average, Sharp Street draws drivers from neighborhoods averaging $85,581 in household income.

5Hilman RoadSecondary road · 5,395vehicles193trucks · 3.6%
Road class
Secondary road
Median trip time
26.9 min
Drivers’ median age
51.0 yrs
Drivers’ average income
$83,069

The busiest stretch of Hilman Road carries 2.4 times the county average; trucks are 3.6% of it, below the county-wide 11.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 29Motorway · #1 by traffic20,842vehicles3,176trucks · 15.2%
2US 34Primary road · #2 by traffic11,416vehicles704trucks · 6.2%
3Locust StreetSecondary road · #3 by traffic9,471vehicles320trucks · 3.4%
4270th StreetPrimary road · 3,198vehicles297trucks · 9.3%
Road class
Primary road
Median trip time
29.4 min
Drivers’ median age
51.8 yrs
Drivers’ average income
$85,922

270th Street carries 44% more than the county average on its busiest stretch, where the median trip lasts 29.4 minutes.

5Sharp StreetSecondary road · #4 by traffic7,870vehicles282trucks · 3.6%
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

MillsDepartment 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 Mills County

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

Need segment-level traffic data?

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