This page delivers traffic analytics for Grant County, South Dakota. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Grant County, South Dakota among 168 road miles divided in 665 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 1,333 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.
The average number of vehicles that travel each day over any road in the road network.
2,285
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
11.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.3 min
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$72,186
Our data indicates an estimated average traffic volume of 2,285 vehicles per day in Grant County, South Dakota that results in 218,622 vehicle-miles traveled per day (≈79.8 million per year). The traffic stream is comprised of an average of 1 truck for every 9 vehicles. Typical time spent behind the wheel per trip is 31.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the South Dakota state averages: Grant sees 28% lower average daily traffic volume than the state average (2,285 vehicles per day against 3,156), suggesting less demand on each road - a critical factor for logistics and site planning. Network-wide, Grant accounts for about 0.9% of South Dakota's statewide total, at 218,622 vehicle-miles traveled per day (≈79.8 million per year). Journey times run 4% lower than the state level, at 31.3 minutes on average. 77% of counties in South Dakota see less traffic than Grant's 2,285 vehicles per day. Its average travel time of 31.3 minutes is longer than 17% of counties in South Dakota.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
4,228
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
13.8%
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.
51.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$70,495
A significant volume of traffic in Grant County, South Dakota utilizes the highway network. The average highway carries 4,228 vehicles per day, 269% more than the average non-highway road in the same area, which carries 1,144 vehicles per day. That average covers 52 highway road miles divided in 246 segments (average segment length 1,115 ft), together carrying 131,056 vehicle-miles traveled per day (≈47.8 million per year). Trucks constitute 13.8% of highway traffic.
Analytical insight
At 13.8%, highway truck share is 2% higher than the state average, marking Grant as a significant freight corridor - underscoring the importance of highway access for logistics operators. 44% of counties in South Dakota see a lower highway truck share than Grant's 13.8%. By raw truck volume, Grant carries more highway trucks than 56% of counties in South Dakota.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
1,144
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
7.3%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.0 min
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
50.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$74,482
The non-highway road network in Grant County, South Dakota supports a substantial volume of traffic. The average non-highway road carries 1,144 vehicles per day, 73% less than the average highway in the same area, which carries 4,228 vehicles per day. That average covers 116 non-highway road miles divided in 419 segments (average segment length 1,461 ft), together carrying 87,566 vehicle-miles traveled per day (≈32.0 million per year). Trucks constitute 7.3% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 47% lower than on highways. Overall, average travel time here is longer than 17% of counties in South Dakota. Trip origins here have higher average income than 51% of counties in South Dakota. The driver population here skews older than 65% of counties in South Dakota.
Time-of-Day & Seasonal Patterns
Analytical insight
In Grant County, South Dakota, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
Grant
South Dakota
Average
Difference
Traffic
2,285
3,156
-27.6%
Truck % (Total Traffic)
11.2%
10.3%
+9.1%
Truck % (Highway)
13.8%
13.6%
+1.7%
Avg. Travel Time
31.3 min
32.5 min
-3.5%
Frequently Asked Questions
The average daily traffic volume is calculated at 2,285 vehicles per day, providing a baseline for daily operations and site assessment.
Grant's average travel time of 31.3 minutes is longer than 17% of counties in South Dakota.
Trucks account for approximately 11.2% of the total traffic mix across all road types, with a significantly higher concentration of 13.8% on highways.
The average travel time for drivers is 31.3 minutes, offering a standard metric for commute and delivery route planning.
Approximately 14% of highway traffic and 13% of non-highway traffic consists of vehicles whose trip originates outside Grant County, South Dakota. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 4:00 PM and 7:00 PM in the evening - about 72% above the daily average.
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)
