Need segment-level traffic data?

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

Get insights →
Traffic heat map of Walworth County, South Dakota: 156 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Grand Crossing and US 12

Walworth County, South Dakota Traffic Counts

Its busiest road, Grand Crossing, carries 3,636 vehicles a day, 3.3 times the average road. This page breaks down traffic in Walworth County, South Dakota across 156 miles of monitored roads split into 627 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Walworth County, South Dakota

Traffic

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

vehicles per day1,110
Trucks

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

13.1%
Average travel time

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

27.5 min
Drivers’ average age

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

53.5 yrs
Drivers’ average income

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

$61,955

Our data shows 1,110 vehicles per day on the average road in Walworth County, South Dakota, and 130,338 vehicle-miles traveled per day (≈47.6 million per year) across its 156 miles of monitored roads. Trucks are 13.1% of traffic, more than the 10.3% across South Dakota.

Shorter trips than 97% of counties in South Dakota

Walworth sees 65% lower average daily traffic volume than the state average (1,110 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 0.5% of South Dakota's statewide total of vehicle-miles. Walworth carries more traffic than 52% of counties in South Dakota.

Journey times run 15% lower than the state level, at 27.5 minutes on average. Its average travel time of 27.5 minutes is shorter than 97% of counties in South Dakota.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Walworth County, South Dakota

Trafficvehicles per day2,015
Trucks13.9%
Average travel time31.9 min
Drivers’ average age53.4 yrs
Drivers’ average income$61,566

The vast majority of driving in Walworth County, South Dakota happens on highways: 84% of all vehicle-miles. The average highway carries 2,015 vehicles per day, 537% more than the average non-highway road in the same area, which carries 316 vehicles per day.

Highways make up 45% of the monitored road miles (70 miles, 293 segments), so they carry more than their share: 109,513 vehicle-miles traveled per day (≈40.0 million per year).

Fewer highway trucks than 77% of counties in South Dakota

Highway truck concentration here (13.9%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for South Dakota: neither freight- nor commuter-dominated.

Walworth's highway truck share (13.9%) is lower than 54% of counties in South Dakota. Walworth's highway truck count is lower than 77% of counties in South Dakota, at roughly 280 trucks per day.

non-highway traffic icon

Non-highway Traffic in Walworth County, South Dakota

Trafficvehicles per day316
Trucks9.0%
Average travel time23.6 min
Drivers’ average age54.4 yrs
Drivers’ average income$63,085

At 16% of vehicle-miles, local roads carry a smaller share of the traffic in Walworth County, South Dakota than highways. On the average non-highway road, that comes to 316 vehicles per day.

Spread over 86 miles and 334 segments, 55% of the road network, local roads carry a lighter load per mile: 20,825 vehicle-miles traveled per day (≈7.6 million per year). The truck share on non-highway roads is 9.0%.

Drivers from lower-income areas than 85% of counties in South Dakota

Non-highway roads carry a truck concentration that's 35% lower than the highway network.

Trip origins here have lower average income than 85% of counties in South Dakota. 80% of counties in South Dakota have a younger driver population than Walworth.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Walworth County vs. South Dakota Traffic Comparison

The average daily traffic per road sets Walworth County apart: 65% below the South Dakota average. Its truck share, by contrast, is 28% above.

MetricWalworth CountySouth Dakota averageDifference
Traffic1,1103,156-64.8%
Truck % (Total Traffic)13.1%10.3%+27.8%
Truck % (Highway)13.9%13.6%+2.5%
Avg. Travel Time27.5 min32.5 min-15.2%

How Walworth County compares

Walworth County has the shortest trips among its nearby counties

Compared with its 4 closest neighbours, Walworth County carries 79.5% more traffic on a typical road and sees 27.1% shorter typical trips; it has the busiest roads of the five. Busier roads and shorter trips together - destinations here sit closer to one another than in the areas around it.

Walworth 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
Walworth County1,11013.1%130,33827.5 minN/A
Campbell County, South Dakota48714.0%32,98838.1 minN/A
Potter County, South Dakota63112.4%62,43835.0 minN/A
Edmunds County, South Dakota1,04113.6%136,80043.7 minN/A
McPherson County, South Dakota31510.7%24,41534.2 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Walworth County ranked within South Dakota

Walworth County sits in the bottom quarter of the South Dakota field on average travel time, at #64 of 66.

Walworth 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.
MeasureWalworth CountySouth Dakota rank
Traffic volume (AADT)1,110#32 of 66
Highway vehicle-miles per day109,513#32 of 49
Truck share on highways13.9%#27 of 49
Highway trucks per day280#38 of 49
Average travel time27.5 min#64 of 66
Average driver income$61,955#56 of 66
Average driver age53.5 yrs#14 of 66

Walworth County ranks #14 of 66 on average driver age but #64 of 66 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Walworth County, South Dakota

The three busiest roads in Walworth County average 2,469 vehicles a day, 2.2 times the county average of 1,110 across all its monitored roads.

Grand Crossing is the busiest road, at 3,636 vehicles a day, 381 of them trucks (10.5%). It also carries the most trucks.

Trips using US 83 are long: a median of 74.1 minutes against 27.5 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Grand CrossingTrunk road · 3,636vehicles381trucks · 10.5%
Road class
Trunk road
Median trip time
32.0 min
Drivers’ median age
53.3 yrs
Drivers’ average income
$63,938

Grand Crossing peaks at 3,636 vehicles a day, 3.3 times the county average; trucks are 10.5% of it, below the county-wide 13.1%.

2US 12Trunk road · 2,632vehicles296trucks · 11.3%
Road class
Trunk road
Median trip time
35.5 min
Drivers’ median age
53.9 yrs
Drivers’ average income
$62,218

US 12 carries 2.4 times the county average at its busiest, 296 of them trucks (11.3%, below the county-wide 13.1%).

3US 83Trunk road · 1,139vehicles177trucks · 15.6%
Road class
Trunk road
Median trip time
74.1 min
Drivers’ median age
52.9 yrs
Drivers’ average income
$60,896

Even at its busiest, US 83 carries about the same as the county average; trucks are 15.6% of it, above the county-wide 13.1%.

44th AvenueSecondary road · 1,126vehicles65trucks · 5.8%
Road class
Secondary road
Median trip time
23.1 min
Drivers’ median age
55.1 yrs
Drivers’ average income
$69,653

4th Avenue is a quieter road: its busiest stretch carries about the same as the county average; trucks are 5.8% of it, below the county-wide 13.1%.

5Lewis and Clark TrailSecondary road · 646vehicles48trucks · 7.4%
Road class
Secondary road
Median trip time
17.6 min
Drivers’ median age
57.3 yrs
Drivers’ average income
$72,424

Lewis and Clark Trail is a local road at heart: the median trip using it lasts 17.6 minutes, against 27.5 for the county.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Grand CrossingTrunk road · #1 by traffic3,636vehicles381trucks · 10.5%
2US 12Trunk road · #2 by traffic2,632vehicles296trucks · 11.3%
3US 83Trunk road · #3 by traffic1,139vehicles177trucks · 15.6%
44th AvenueSecondary road · #4 by traffic1,126vehicles65trucks · 5.8%
5Scranton StreetSecondary road · 635vehicles49trucks · 7.7%
Road class
Secondary road
Median trip time
23.4 min
Drivers’ median age
52.9 yrs
Drivers’ average income
$52,986

Even at its busiest, Scranton Street carries 43% less than the county average; trucks are 7.7% of it, below the county-wide 13.1%.

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

WalworthDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Walworth County

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

Need segment-level traffic data?

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