This page delivers traffic analytics for Day County, South Dakota. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Day County, South Dakota among 230 road miles divided in 1,279 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 950 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.
951
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.
42.5 min
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$70,507
Our data indicates an estimated average traffic volume of 951 vehicles per day in Day County, South Dakota that results in 204,385 vehicle-miles traveled per day (≈74.6 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 42.5 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the South Dakota state averages: Day sees 70% lower average daily traffic volume than the state average (951 vehicles per day against 3,156), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network that adds up to 204,385 vehicle-miles traveled per day (≈74.6 million per year), roughly 0.8% of South Dakota's statewide total. The average trip takes 42.5 minutes, 31% higher than the state level. 38% of counties in South Dakota see less traffic than Day's 951 vehicles per day. Its average travel time of 42.5 minutes is longer than 82% 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.
2,410
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
58.6 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.
$72,344
A significant volume of traffic in Day County, South Dakota utilizes the highway network. The average highway carries 2,410 vehicles per day, 352% more than the average non-highway road in the same area, which carries 533 vehicles per day. That average covers 77 highway road miles divided in 285 segments (average segment length 1,420 ft), together carrying 139,184 vehicle-miles traveled per day (≈50.8 million per year). Trucks constitute 12.5% of highway traffic.
Analytical insight
At 12.5%, highway truck share is 8% lower than the state average, marking Day as a primarily local traffic hub - underscoring the importance of local access for logistics operators. Day's highway truck share (12.5%) is higher than 28% of counties in South Dakota. 29% of counties in South Dakota see fewer highway trucks per day than Day's roughly 301.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
533
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.4%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
37.9 min
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
55.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$67,886
The non-highway road network in Day County, South Dakota supports a substantial volume of traffic. The average non-highway road carries 533 vehicles per day, 78% less than the average highway in the same area, which carries 2,410 vehicles per day. That average covers 153 non-highway road miles divided in 994 segments (average segment length 815 ft), together carrying 65,201 vehicle-miles traveled per day (≈23.8 million per year). Trucks constitute 8.4% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 33% lower than on highways. Day's overall average travel time exceeds 82% of counties in South Dakota. Trip origins here have higher average income than 46% of counties in South Dakota. 69% of counties in South Dakota have a younger driver population than Day.
Time-of-Day & Seasonal Patterns
Analytical insight
In Day County, South Dakota, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
Day
South Dakota
Average
Difference
Traffic
951
3,156
-69.9%
Truck % (Total Traffic)
11.2%
10.3%
+8.9%
Truck % (Highway)
12.5%
13.6%
-7.9%
Avg. Travel Time
42.5 min
32.5 min
+31.1%
Frequently Asked Questions
The average daily traffic volume is calculated at 951 vehicles per day, providing a baseline for daily operations and site assessment.
Day carries more highway trucks by raw volume than 29% of counties in South Dakota, at roughly 301 per day.
The average travel time for drivers is 42.5 minutes, offering a standard metric for commute and delivery route planning.
Drivers on Day roads have a median age of 52 years, and the median household income of the neighborhoods trips originate from averages $70,507 - useful context for retail siting and customer profiling.
Approximately 44% of highway traffic and 9% of non-highway traffic consists of vehicles whose trip originates outside Day 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 8:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 76% 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)
