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Traffic heat map of Spink County, South Dakota: 311 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 7th Avenue and 3rd Street

Spink County, South Dakota Traffic Counts

How busy are the roads of Spink County, South Dakota? We measure 311 road miles, divided into 1,068 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, 7th Avenue, carries 9,128 vehicles a day, 7.7 times the average road. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
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 Spink County, South Dakota

Traffic

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

vehicles per day1,182
Trucks

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

10.9%
Average travel time

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

37.9 min
Drivers’ average age

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

52.7 yrs
Drivers’ average income

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

$73,063

The average monitored road in Spink County, South Dakota carries 1,182 vehicles per day. Across its 311 miles of monitored roads, that adds up to 267,162 vehicle-miles traveled per day (≈97.5 million per year). About 1 in 9 vehicles is a truck, in line with South Dakota (10.3%).

Traffic 63% below the South Dakota average

Spink sees 63% lower average daily traffic volume than the state average (1,182 vehicles per day against 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 1.1% of South Dakota's statewide total of vehicle-miles. 57% of counties in South Dakota see less traffic than Spink's 1,182 vehicles per day.

Journey times run 17% higher than the state level, at 37.9 minutes on average. On travel time, Spink runs longer than 55% of counties in South Dakota.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Spink County, South Dakota

Trafficvehicles per day3,825
Trucks12.5%
Average travel time41.1 min
Drivers’ average age52.5 yrs
Drivers’ average income$72,877

Highways carry about half of all travel in Spink County, South Dakota, 54% of vehicle-miles. The average highway carries 3,825 vehicles per day, 476% more than the average non-highway road in the same area, which carries 664 vehicles per day.

Highways make up 19% of the monitored road miles (59 miles, 175 segments), so they carry more than their share: 144,511 vehicle-miles traveled per day (≈52.7 million per year).

50% of counties in South Dakota move less traffic on their highways.

Lower highway truck share than 72% of counties in South Dakota

The concentration of trucks on highways (12.5%) is 8% lower than the state average for similar road classifications. The highway traffic mix is typical for South Dakota: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 72% of counties in South Dakota. Spink's highway truck count is lower than 54% of counties in South Dakota, at roughly 479 trucks per day.

non-highway traffic icon

Non-highway Traffic in Spink County, South Dakota

Trafficvehicles per day664
Trucks9.1%
Average travel time37.2 min
Drivers’ average age53.2 yrs
Drivers’ average income$73,332

Local roads carry about half of all travel in Spink County, South Dakota, 46% of vehicle-miles. A typical local road sees 664 vehicles per day.

Local roads make up 81% of the monitored road miles (251 miles in 893 segments) but carry less than their share of travel: 122,651 vehicle-miles traveled per day (≈44.8 million per year). About 1 in 11 vehicles on non-highway roads is a truck (9.1%).

Older drivers than 75% of counties in South Dakota

The concentration of trucks on non-highway roads is 28% lower than on highways.

55% of counties in South Dakota see lower average driver income among trip origins than Spink. Spink's median driver age is higher than 75% of counties in South Dakota.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Spink County vs. South Dakota Traffic Comparison

Spink County's biggest difference from the South Dakota average is its average daily traffic per road, 63% below it. Its average travel time, by contrast, is 17% above.

MetricSpink CountySouth Dakota averageDifference
Traffic1,1823,156-62.5%
Truck % (Total Traffic)10.9%10.3%+6.3%
Truck % (Highway)12.5%13.6%-7.9%
Avg. Travel Time37.9 min32.5 min+16.6%

How Spink County compares

Spink County against nearby counties

Set against the average of the 4 areas nearest to it, Spink County carries 49.6% 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.

Spink 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
Spink County1,18210.9%267,16237.9 minN/A
Clark County, South Dakota7759.4%107,86548.3 minN/A
Faulk County, South Dakota54810.3%63,47348.3 minN/A
Brown County, South Dakota5,4426.9%1,082,63434.1 minN/A
Beadle County, South Dakota2,62010.6%394,21434.9 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Spink County ranked within South Dakota

Spink County sits in the top quarter of the South Dakota field on average driver age, at #17 of 66.

Spink 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.
MeasureSpink CountySouth Dakota rank
Traffic volume (AADT)1,182#29 of 66
Highway vehicle-miles per day144,511#25 of 49
Truck share on highways12.5%#35 of 49
Highway trucks per day479#27 of 49
Average travel time37.9 min#30 of 66
Average driver income$73,063#30 of 66
Average driver age52.7 yrs#17 of 66

Busiest roads in Spink County, South Dakota

Traffic concentrates on a few corridors: the three busiest roads average 6,060 vehicles a day, against 1,182 on the average road in Spink County.

7th Avenue is the busiest road, at 9,128 vehicles a day, 517 of them trucks (5.7%). No other road comes close: 3rd Street, in second place, carries 5,128. It tops the truck ranking too, with the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
17th AvenueTrunk road · 9,128vehicles517trucks · 5.7%
Road class
Trunk road
Median trip time
39.7 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$68,130

7th Avenue carries 7.7 times the county average at its busiest, 517 of them trucks (5.7%, below the county-wide 10.9%).

23rd StreetTrunk road · 5,128vehicles316trucks · 6.2%
Road class
Trunk road
Median trip time
35.0 min
Drivers’ median age
53.2 yrs
Drivers’ average income
$73,690

3rd Street peaks at 5,128 vehicles a day, 4.3 times the county average; trucks are 6.2% of it, below the county-wide 10.9%.

3US 281Trunk road · 3,925vehicles427trucks · 10.9%
Road class
Trunk road
Median trip time
40.1 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$75,063

US 281 carries 3.3 times the county average at its busiest, 427 of them trucks (10.9%, in line with the county-wide 10.9%).

4386th AvenueTrunk road · 3,310vehicles431trucks · 13.0%
Road class
Trunk road
Median trip time
48.8 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$72,019

386th Avenue carries 2.8 times the county average on its busiest stretch, where the median trip lasts 48.8 minutes.

5385th AvenueTrunk road · 2,733vehicles286trucks · 10.5%
Road class
Trunk road
Median trip time
46.3 min
Drivers’ median age
53.6 yrs
Drivers’ average income
$77,627

At 2.3 times the county average, 385th Avenue draws drivers from neighborhoods averaging $77,627 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
17th AvenueTrunk road · #1 by traffic9,128vehicles517trucks · 5.7%
2386th AvenueTrunk road · #4 by traffic3,310vehicles431trucks · 13.0%
3US 281Trunk road · #3 by traffic3,925vehicles427trucks · 10.9%
43rd StreetTrunk road · #2 by traffic5,128vehicles316trucks · 6.2%
5385th AvenueTrunk road · #5 by traffic2,733vehicles286trucks · 10.5%
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

SpinkDepartment 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 Spink County

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

Need segment-level traffic data?

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