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Traffic heat map of Aurora County, South Dakota: 126 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Purple Heart Memorial Highway

Aurora County, South Dakota Traffic Counts

Our Aurora County, South Dakota traffic data covers 525 road segments over 126 road miles, with an average segment of just 1,270 ft. About 1 in 6 vehicles here is a truck, against 1 in 10 across South Dakota. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Aurora County, South Dakota

Traffic

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

vehicles per day1,109
Trucks

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

15.5%
Average travel time

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

37.3 min
Drivers’ average age

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

48.9 yrs
Drivers’ average income

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

$71,518

A typical monitored road in Aurora County, South Dakota sees 1,109 vehicles per day, while its 126 miles of monitored roads together handle 376,657 vehicle-miles traveled per day (≈137 million per year). Freight weighs heavily here: trucks are 15.5% of traffic, against 10.3% across South Dakota.

Traffic 65% below the South Dakota average

At 1,109 vehicles per day, the average monitored road in Aurora carries 65% less traffic than the state average of 3,156, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 1.5% of South Dakota's statewide total of vehicle-miles. 51% of counties in South Dakota see less traffic than Aurora's 1,109 vehicles per day.

The average trip takes 37.3 minutes, 15% higher than the state level. On travel time, Aurora runs longer than 51% of counties in South Dakota.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Aurora County, South Dakota

Trafficvehicles per day4,913
Trucks16.3%
Average travel time51.3 min
Drivers’ average age48.8 yrs
Drivers’ average income$70,434

The vast majority of driving in Aurora County, South Dakota happens on highways: 85% of all vehicle-miles. The average highway carries 4,913 vehicles per day, 518% more than the average non-highway road in the same area, which carries 795 vehicles per day.

Highways make up 47% of the monitored road miles (59 miles, 40 segments), so they carry more than their share: 320,133 vehicle-miles traveled per day (≈117 million per year).

By highway travel volume, Aurora outranks 77% of counties in South Dakota.

More highway trucks than 90% of counties in South Dakota

Highway truck concentration here runs 20% higher than the state average, at 16.3%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Aurora's highway truck share (16.3%) is higher than 81% of counties in South Dakota. 90% of counties in South Dakota see fewer highway trucks per day than Aurora's roughly 800.

non-highway traffic icon

Non-highway Traffic in Aurora County, South Dakota

Trafficvehicles per day795
Trucks11.2%
Average travel time36.1 min
Drivers’ average age49.4 yrs
Drivers’ average income$74,881

At 15% of vehicle-miles, local roads carry a smaller share of the traffic in Aurora County, South Dakota than highways. On the average non-highway road, that comes to 795 vehicles per day.

Spread over 67 miles and 485 segments, 53% of the road network, local roads carry a lighter load per mile: 56,524 vehicle-miles traveled per day (≈20.6 million per year). The truck share on non-highway roads is 11.2%.

Local roads carry 31% fewer trucks by share than highways

The concentration of trucks on non-highway roads is 31% lower than on highways.

Trip origins here have lower average income than 51% of counties in South Dakota. 57% of counties in South Dakota have an older driver population than Aurora.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 8:00 AM to 12:00 PM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 76% higher than the daily average.
Weekend traffic:
Weekends are busier than weekdays: volumes run about 7% above weekday levels, which usually points to leisure, tourism or shopping traffic.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +41% versus the annual average.
Lowest month:
January is the quietest month, with volumes -41% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Aurora County, South Dakota, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +41% in high season.

Aurora County vs. South Dakota Traffic Comparison

Of the four measures, average daily traffic per road differs most: Aurora County runs 65% below the South Dakota average. Its truck share, by contrast, is 51% above.

MetricAurora CountySouth Dakota averageDifference
Traffic1,1093,156-64.9%
Truck % (Total Traffic)15.5%10.3%+51.1%
Truck % (Highway)16.3%13.6%+20.0%
Avg. Travel Time37.3 min32.5 min+14.8%

How Aurora County compares

Aurora County has a higher truck share than any nearby county

Set against the average of the 4 areas nearest to it, Aurora County carries 36.6% less traffic on a typical road; it has the third busiest roads of the five.

Aurora County and the 4 nearest county-level areas by centroid distance, with the South Dakota average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Aurora County1,10915.5%376,65737.3 minN/A
Davison County, South Dakota3,87610.3%566,97233.6 minN/A
Jerauld County, South Dakota79411.1%56,00241.2 minN/A
Brule County, South Dakota1,50413.4%373,40729.4 minN/A
Douglas County, South Dakota8209.7%72,71441.5 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Aurora County ranked within South Dakota

Highway truck volume places Aurora County #6 of 49 in South Dakota - the top quarter of the state.

Aurora County ranked among 66 county-level areas in South Dakota (1 = highest); measures without data in every county rank a smaller field, down to 49.
MeasureAurora CountySouth Dakota rank
Traffic volume (AADT)1,109#33 of 66
Highway vehicle-miles per day320,133#12 of 49
Truck share on highways16.3%#10 of 49
Highway trucks per day800#6 of 49
Average travel time37.3 min#33 of 66
Average driver income$71,518#34 of 66
Average driver age48.9 yrs#38 of 66

Busiest roads in Aurora County, South Dakota

The three busiest roads in Aurora County average 4,450 vehicles a day, 4.0 times the county average of 1,109 across all its monitored roads.

Purple Heart Memorial Highway is the busiest road, at 10,823 vehicles a day, 1,763 of them trucks (16.3%). That is 8.1 times the next road, 388th Avenue (1,342). It tops the truck ranking too, with the most trucks.

Purple Heart Memorial Highway carries longer journeys than most roads here, with a median trip of 51.3 minutes against 37.3 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Purple Heart Memorial HighwayMotorway · 10,823vehicles1,763trucks · 16.3%
Road class
Motorway
Median trip time
51.3 min
Drivers’ median age
48.8 yrs
Drivers’ average income
$70,434

Purple Heart Memorial Highway carries 9.8 times the county average on its busiest stretch, where the median trip lasts 51.3 minutes.

2388th AvenuePrimary road · 1,342vehicles161trucks · 12.0%
Road class
Primary road
Median trip time
41.0 min
Drivers’ median age
49.9 yrs
Drivers’ average income
$73,390

388th Avenue carries 21% more than the county average on its busiest stretch, where the median trip lasts 41.0 minutes.

3Main StreetTertiary road · 1,184vehicles115trucks · 9.7%
Road class
Tertiary road
Median trip time
28.3 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$74,710

At 7% more than the county average, Main Street draws drivers from neighborhoods averaging $74,710 in household income.

4Davenport StreetSecondary road · 1,038vehicles116trucks · 11.2%
Road class
Secondary road
Median trip time
24.8 min
Drivers’ median age
47.6 yrs
Drivers’ average income
$74,787

Davenport Street is a local road at heart: the median trip using it lasts 24.8 minutes, against 37.3 for the county.

5US 281Primary road · 972vehicles111trucks · 11.4%
Road class
Primary road
Median trip time
46.6 min
Drivers’ median age
53.7 yrs
Drivers’ average income
$75,054

Even at its busiest, US 281 carries 12% less than the county average; trucks are 11.4% of it, below the county-wide 15.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Purple Heart Memorial HighwayMotorway · #1 by traffic10,823vehicles1,763trucks · 16.3%
2388th AvenuePrimary road · #2 by traffic1,342vehicles161trucks · 12.0%
3Davenport StreetSecondary road · #4 by traffic1,038vehicles116trucks · 11.2%
4Main StreetTertiary road · #3 by traffic1,184vehicles115trucks · 9.7%
5US 281Primary road · #5 by traffic972vehicles111trucks · 11.4%
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

AuroraDepartment 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 Aurora County

The same traffic breakdown for the areas closest to Aurora County, South Dakota.

Need segment-level traffic data?

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