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Traffic heat map of Stanley County, South Dakota: 121 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Highway 83 and Deadwood Street

Stanley County, South Dakota Traffic Counts

Its busiest road, Highway 83, carries 18,853 vehicles a day, 8.1 times the average road. This page breaks down traffic in Stanley County, South Dakota across 121 miles of monitored roads split into 431 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
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 Stanley County, South Dakota

Traffic

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

vehicles per day2,323
Trucks

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

12.2%
Average travel time

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

40.2 min
Drivers’ average age

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

48.2 yrs
Drivers’ average income

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

$81,833

The average monitored road in Stanley County, South Dakota carries 2,323 vehicles per day. Across its 121 miles of monitored roads, that adds up to 159,784 vehicle-miles traveled per day (≈58.3 million per year). Trucks are 12.2% of traffic, more than the 10.3% across South Dakota.

Busier roads than 78% of counties in South Dakota

At 2,323 vehicles per day, the average monitored road in Stanley carries 26% less traffic than the state average of 3,156, 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 0.7% of South Dakota's statewide total. 78% of counties in South Dakota see less traffic than Stanley's 2,323 vehicles per day.

The average trip takes 40.2 minutes, 24% higher than the state level. 68% of counties in South Dakota have a shorter average travel time than Stanley's 40.2 minutes.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Stanley County, South Dakota

Trafficvehicles per day3,754
Trucks12.9%
Average travel time39.3 min
Drivers’ average age48.3 yrs
Drivers’ average income$80,800

Most travel in Stanley County, South Dakota happens on highways, 80% of all vehicle-miles. The average highway carries 3,754 vehicles per day, 413% more than the average non-highway road in the same area, which carries 732 vehicles per day.

With 53% of the road miles (64 miles in 227 segments), highways punch above their length, carrying 127,793 vehicle-miles traveled per day (≈46.6 million per year).

Fewer highway trucks than 69% of counties in South Dakota

At 12.9%, highway truck share is 5% lower than the state average. The highway traffic mix is typical for South Dakota: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 62% of counties in South Dakota. Stanley's highway truck count is lower than 69% of counties in South Dakota, at roughly 483 trucks per day.

non-highway traffic icon

Non-highway Traffic in Stanley County, South Dakota

Trafficvehicles per day732
Trucks9.7%
Average travel time41.3 min
Drivers’ average age46.7 yrs
Drivers’ average income$86,961

At 20% of vehicle-miles, local roads carry a smaller share of the traffic in Stanley County, South Dakota than highways. The average non-highway road carries 732 vehicles per day.

Local roads make up 47% of the monitored road miles (57 miles in 204 segments) but carry less than their share of travel: 31,991 vehicle-miles traveled per day (≈11.7 million per year). Trucks make up 9.7% of non-highway traffic, about 1 in 10 vehicles.

Drivers from higher-income areas than 91% of counties in South Dakota

Non-highway roads carry a truck concentration that's 25% lower than the highway network.

Stanley's average driver income is higher than 91% of counties in South Dakota. Stanley's median driver age is lower than 69% of counties in South Dakota.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Stanley County, South Dakota, the peak hour concentrates about 7% of the day's traffic.

Stanley County vs. South Dakota Traffic Comparison

Stanley County's biggest difference from the South Dakota average is its average daily traffic per road, 26% below it. Its average travel time, by contrast, is 24% above.

MetricStanley CountySouth Dakota averageDifference
Traffic2,3233,156-26.4%
Truck % (Total Traffic)12.2%10.3%+18.9%
Truck % (Highway)12.9%13.6%-5.3%
Avg. Travel Time40.2 min32.5 min+24.0%

How Stanley County compares

Stanley County has the busiest roads among its nearby counties

Against the 4 nearest areas, Stanley County carries 149.1% more traffic on a typical road; it has the busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Stanley 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
Stanley County2,32312.2%159,78440.2 minN/A
Haakon County, South Dakota70014.1%69,14349.2 minN/A
Sully County, South Dakota69713.4%50,79135.8 minN/A
Dewey County, South Dakota86313.1%59,01439.8 minN/A
Jones County, South Dakota1,47222.2%309,39459.6 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Stanley County ranked within South Dakota

Stanley County sits in the top quarter of the South Dakota field on average driver income, at #7 of 66.

Stanley 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.
MeasureStanley CountySouth Dakota rank
Traffic volume (AADT)2,323#15 of 66
Highway vehicle-miles per day127,793#29 of 49
Truck share on highways12.9%#31 of 49
Highway trucks per day483#34 of 49
Average travel time40.2 min#22 of 66
Average driver income$81,833#7 of 66
Average driver age48.2 yrs#46 of 66

Busiest roads in Stanley County, South Dakota

On their busiest stretches, the three busiest roads in Stanley County carry 13,015 vehicles a day on average, 5.6 times the typical road in the county (2,323).

Highway 83 is the busiest road, at 18,853 vehicles a day, 1,853 of them trucks (9.8%). That is 67% more than the next road, Deadwood Street (11,286). It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Highway 83Trunk road · 18,853vehicles1,853trucks · 9.8%
Road class
Trunk road
Median trip time
36.9 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$83,005

A main artery: Highway 83's busiest stretch carries 8.1 times the county average; trucks are 9.8% of it, below the county-wide 12.2%.

2Deadwood StreetTrunk road · 11,286vehicles1,398trucks · 12.4%
Road class
Trunk road
Median trip time
37.0 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$80,380

Deadwood Street carries 4.9 times the county average on its busiest stretch, where the median trip lasts 37.0 minutes.

31st StreetTrunk road · 8,907vehicles912trucks · 10.2%
Road class
Trunk road
Median trip time
39.5 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$78,841

At 3.8 times the county average, 1st Street draws drivers from neighborhoods averaging $78,841 in household income.

4Highway 14/34Trunk road · 5,936vehicles832trucks · 14.0%
Road class
Trunk road
Median trip time
38.7 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$92,957

The busiest stretch of Highway 14/34 carries 2.6 times the county average; trucks are 14.0% of it, above the county-wide 12.2%.

5US 83Trunk road · 3,545vehicles431trucks · 12.2%
Road class
Trunk road
Median trip time
46.6 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$78,425

At 53% more than the county average, US 83 draws drivers from neighborhoods averaging $78,425 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Highway 83Trunk road · #1 by traffic18,853vehicles1,853trucks · 9.8%
2Deadwood StreetTrunk road · #2 by traffic11,286vehicles1,398trucks · 12.4%
31st StreetTrunk road · #3 by traffic8,907vehicles912trucks · 10.2%
4Highway 14/34Trunk road · #4 by traffic5,936vehicles832trucks · 14.0%
5US 83Trunk road · #5 by traffic3,545vehicles431trucks · 12.2%
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

StanleyDepartment 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 Stanley County

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

Need segment-level traffic data?

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