
Total Traffic Volume & Performance in Brown County, South Dakota
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,442 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.9% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.1 min |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 47.4 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $74,410 |
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Our data shows 5,442 vehicles per day on the average road in Brown County, South Dakota, and 1,082,634 vehicle-miles traveled per day (≈395 million per year) across its 554 miles of monitored roads. About 1 in 15 vehicles is a truck, fewer than the 1 in 10 across South Dakota.
Busier roads than 97% of counties in South Dakota
Brown sees 72% higher average daily traffic volume than the state average (5,442 vehicles per day against 3,156), suggesting more demand on each road - heavy exposure for roadside retail, and tight road space for deliveries. In total volume terms, its road network carries about 4.4% of South Dakota's statewide total of vehicle-miles. Brown carries more traffic than 97% of counties in South Dakota.
The average trip takes 34.1 minutes, on par with the state level. On travel time, Brown runs shorter than 66% of counties in South Dakota.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Brown County, South Dakota
| Traffic | vehicles per day12,434 |
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| Trucks | 9.1% |
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| Average travel time | 32.2 min |
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| Drivers’ average age | 48.2 yrs |
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| Drivers’ average income | $75,010 |
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Travel in Brown County, South Dakota splits roughly evenly, with about half of it (46% of vehicle-miles) on highways. The average highway carries 12,434 vehicles per day, 194% more than the average non-highway road in the same area, which carries 4,236 vehicles per day.
With 24% of the road miles (133 miles in 583 segments), highways punch above their length, carrying 502,186 vehicle-miles traveled per day (≈183 million per year).
85% of counties in South Dakota move less traffic on their highways.
Lower highway truck share than 98% of counties in South Dakota
The concentration of trucks on highways (9.1%) is 33% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 98% of counties in South Dakota. By raw truck volume, Brown carries more highway trucks than 54% of counties in South Dakota.

Non-highway Traffic in Brown County, South Dakota
| Traffic | vehicles per day4,236 |
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| Trucks | 5.0% |
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| Average travel time | 34.4 min |
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| Drivers’ average age | 46.8 yrs |
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| Drivers’ average income | $73,932 |
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Travel in Brown County, South Dakota splits roughly evenly, with about half of it (54% of vehicle-miles) on local roads. The average non-highway road carries 4,236 vehicles per day.
Spread over 421 miles and 3,380 segments, 76% of the road network, local roads carry a lighter load per mile: 580,448 vehicle-miles traveled per day (≈212 million per year). Trucks make up 5.0% of non-highway traffic, about 1 in 20 vehicles.
Younger drivers than 75% of counties in South Dakota
The concentration of trucks on non-highway roads is 45% lower than on highways.
Trip origins here have higher average income than 65% of counties in South Dakota. The driver population here skews younger than 75% of counties in South Dakota.