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Traffic heat map of Tripp County, South Dakota: 137 miles of roads shaded from blue (light) to red (heavy traffic), busiest on 2nd Street and US 18

Tripp County, South Dakota Traffic Counts

Traffic analytics for Tripp County, South Dakota, calculated from real-world mobile and sensor networks on 688 road segments (137 road miles, about 1,049 ft each). Its busiest road, 2nd Street, carries 8,822 vehicles a day, 4.6 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Tripp County, South Dakota

Traffic

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

vehicles per day1,909
Trucks

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

10.2%
Average travel time

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

34.7 min
Drivers’ average age

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

52.8 yrs
Drivers’ average income

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

$56,376

Our data shows 1,909 vehicles per day on the average road in Tripp County, South Dakota, and 129,806 vehicle-miles traveled per day (≈47.4 million per year) across its 137 miles of monitored roads. About 1 in 10 vehicles is a truck, in line with South Dakota (10.3%).

Busier roads than 74% of counties in South Dakota

At 1,909 vehicles per day, the average monitored road in Tripp carries 39% less traffic than the state average of 3,156, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. Network-wide, Tripp accounts for about 0.5% of South Dakota's statewide total of vehicle-miles. By volume, Tripp's 1,909 vehicles per day outpaces 74% of counties in South Dakota.

At 34.7 minutes, the average travel time is 7% higher than the state level. 60% of counties in South Dakota have a longer average travel time than Tripp's 34.7 minutes.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Tripp County vs. South Dakota Traffic Comparison

Of the four measures, average daily traffic per road differs most: Tripp County runs 39% below the South Dakota average.

MetricTripp CountySouth Dakota averageDifference
Traffic1,9093,156-39.5%
Truck % (Total Traffic)10.2%10.3%-0.9%
Avg. Travel Time34.7 min32.5 min+6.8%

How Tripp County compares

Tripp County has the busiest roads among its nearby counties

Compared with its 4 closest neighbours, Tripp County carries 115.0% more traffic on a typical road; it has the busiest roads of the five.

Tripp 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
Tripp County1,90910.2%129,80634.7 minN/A
Keya Paha County, Nebraska16515.9%5,17542.3 minN/A
Gregory County, South Dakota78210.2%117,28431.9 minN/A
Todd County, South Dakota1,24212.6%110,80038.4 minN/A
Lyman County, South Dakota1,36218.2%571,25337.0 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Tripp County ranked within South Dakota

Average driver income places Tripp County #59 of 66 in South Dakota - the bottom quarter of the state.

Tripp County ranked among 66 county-level areas in South Dakota (1 = highest).
MeasureTripp CountySouth Dakota rank
Traffic volume (AADT)1,909#18 of 66
Average travel time34.7 min#40 of 66
Average driver income$56,376#59 of 66
Average driver age52.8 yrs#16 of 66

Tripp County ranks #16 of 66 on average driver age but #59 of 66 on average driver income - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Tripp County, South Dakota

On their busiest stretches, the three busiest roads in Tripp County carry 4,603 vehicles a day on average, 2.4 times the typical road in the county (1,909).

2nd Street leads with 8,822 vehicles a day, 576 of them trucks (6.5%). That is 2.4 times the next road, US 18 (3,728). It tops the truck ranking too, with the most trucks.

Trips using US 183 are long: a median of 49.4 minutes against 34.7 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
12nd StreetPrimary road · 8,822vehicles576trucks · 6.5%
Road class
Primary road
Median trip time
32.6 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$54,310

On its busiest stretch, 2nd Street carries 4.6 times the county average; trucks are 6.5% of it, below the county-wide 10.2%.

2US 18Primary road · 3,728vehicles339trucks · 9.1%
Road class
Primary road
Median trip time
38.5 min
Drivers’ median age
52.5 yrs
Drivers’ average income
$55,155

US 18 peaks at 3,728 vehicles a day, 2.0 times the county average; trucks are 9.1% of it, below the county-wide 10.2%.

3277th StreetPrimary road · 1,259vehicles130trucks · 10.3%
Road class
Primary road
Median trip time
46.0 min
Drivers’ median age
54.6 yrs
Drivers’ average income
$57,359

Drivers on 277th Street are on long journeys, a median 46.0 minutes against 34.7 county-wide: a through route more than a local street.

4307th AvenuePrimary road · 1,180vehicles124trucks · 10.5%
Road class
Primary road
Median trip time
49.4 min
Drivers’ median age
53.8 yrs
Drivers’ average income
$55,335

307th Avenue carries through traffic: the median trip using it lasts 49.4 minutes, against 34.7 for the county.

5US 183Primary road · 956vehicles105trucks · 11.0%
Road class
Primary road
Median trip time
49.4 min
Drivers’ median age
53.6 yrs
Drivers’ average income
$53,477

US 183 is a quieter road: its busiest stretch carries 50% less than the county average; trucks are 11.0% of it, above the county-wide 10.2%.

Ranked by trucks per day

Cars and light vehiclesTrucks
12nd StreetPrimary road · #1 by traffic8,822vehicles576trucks · 6.5%
2US 18Primary road · #2 by traffic3,728vehicles339trucks · 9.1%
3277th StreetPrimary road · #3 by traffic1,259vehicles130trucks · 10.3%
4307th AvenuePrimary road · #4 by traffic1,180vehicles124trucks · 10.5%
5US 183Primary road · #5 by traffic956vehicles105trucks · 11.0%
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

TrippDepartment 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 Tripp County

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

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