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Gregory County, South Dakota Traffic Counts

This page delivers traffic analytics for Gregory County, South Dakota. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Gregory County, South Dakota among 153 road miles divided in 748 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 1,082 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

Traffic

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

782

Trucks

Trucks

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

10.2%

Average travel time

Average travel time

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

31.9 min

Drivers’ average age

Drivers’ average age

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

53.7 yrs

Drivers’ average income

Drivers’ average income

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

$56,209

Our data indicates an estimated average traffic volume of 782 vehicles per day in Gregory County, South Dakota that results in 117,284 vehicle-miles traveled per day (≈42.8 million per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 31.9 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the South Dakota state averages: Gregory's average daily traffic volume is 75% lower than the state average - 782 vehicles per day against 3,156 - suggesting less traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 117,284 vehicle-miles traveled per day (≈42.8 million per year), roughly 0.5% of South Dakota's statewide total. At 31.9 minutes, the average travel time is 2% lower than the state level. Gregory carries more traffic than 26% of counties in South Dakota. 26% of counties in South Dakota have a shorter average travel time than Gregory's 31.9 minutes.

Highway vs. Non-Highway Traffic Analysis

Analytical insight

N/A
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Non-highway traffic

Traffic

Traffic

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

782

Trucks

Trucks

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

10.2%

Average travel time

Average travel time

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

31.9 min

Drivers’ average age

Drivers’ average age

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

53.7 yrs

Drivers’ average income

Drivers’ average income

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

$56,209

The non-highway road network in Gregory County, South Dakota supports a substantial volume of traffic. The average non-highway road carries 782 vehicles per day. That average covers 153 non-highway road miles divided in 748 segments (average segment length 1,082 ft), together carrying 117,284 vehicle-miles traveled per day (≈42.8 million per year). Trucks constitute 10.2% of non-highway traffic.

Analytical insight

26% of counties in South Dakota see shorter overall travel times than Gregory. 9% of counties in South Dakota see lower average driver income among trip origins than Gregory. Gregory's median driver age is higher than 82% of counties in South Dakota.

Time-of-Day & Seasonal Patterns

Analytical insight

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

Traffic Flow Profile Comparison

Metric

Gregory

South Dakota
Average

Difference

Traffic

782

3,156

-75.2%

Truck % (Total Traffic)

10.2%

10.3%

-0.4%

Truck % (Highway)

13.6%

Avg. Travel Time

31.9 min

32.5 min

-1.8%

How Gregory County compares

Gregory County against nearby areas

Against the 4 nearest areas, Gregory County carries 33.4% less traffic on a typical road; it has the fourth busiest roads of the five.

Gregory 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
Gregory County78210.2%117,28431.9 minN/A
Tripp County, South Dakota1,90910.2%129,80634.7 minN/A
Keya Paha County, Nebraska16515.9%5,17542.3 minN/A
Brule County, South Dakota1,50413.4%373,40729.4 minN/A
Charles Mix County, South Dakota1,1189.6%149,36234.0 minN/A
South Dakota average3,15610.3%N/A32.5 min12.9%

Gregory County ranked within South Dakota

Gregory County sits in the bottom quarter of the South Dakota field on average driver income, at #60 of 66.

Where Gregory County sits among South Dakota's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
MeasureGregory CountySouth Dakota rank
Traffic volume (AADT)782#49 of 66
Average travel time31.9 min#49 of 66
Average driver income$56,209#60 of 66
Average driver age53.7 yrs#13 of 66

Gregory County ranks #13 of 66 on average driver age but #60 of 66 on average driver income - the two describe the same roads and are worth reading together rather than either on its own.

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

South DakotaDepartment of Transportation

Historical traffic pattern databases

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
TrafficZoom methodology
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Data current as of:
Q3 2026

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Counties near Gregory County

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

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