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Brown County, South Dakota Traffic Counts

This page delivers traffic analytics for Brown County, South Dakota. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Brown County, South Dakota among 554 road miles divided in 3,963 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 738 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 icon

Total Traffic Volume & Performance

Traffic

5,442

Trucks

6.9%

Average travel time

34.1 min

Drivers’ average age

47.4 yrs

Drivers’ average income

$74,410

Our data indicates an estimated average traffic volume of 5,442 vehicles per day in Brown County, South Dakota that results in 1,082,634 vehicle-miles traveled per day (≈395 million per year). The traffic stream is comprised of an average of 1 truck for every 15 vehicles. Typical time spent behind the wheel per trip is 34.1 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the South Dakota state averages: Brown's average daily traffic volume is 72% higher than the state average - 5,442 vehicles per day against 3,156 - suggesting more traffic load per road, a critical factor for logistics and site planning. Network-wide, Brown accounts for about 4.4% of South Dakota's statewide total, at 1,082,634 vehicle-miles traveled per day (≈395 million per year). Journey times run 5% higher than the state level, at 34.1 minutes on average. Brown carries more traffic than 97% of counties in South Dakota. 34% of counties in South Dakota have a shorter average travel time than Brown's 34.1 minutes.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

12,434

Trucks

9.1%

Average travel time

32.2 min

Drivers’ average age

48.2 yrs

Drivers’ average income

$75,010

A significant volume of traffic in Brown County, South Dakota utilizes the highway network. 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. That average covers 133 highway road miles divided in 583 segments (average segment length 1,200 ft), together carrying 502,186 vehicle-miles traveled per day (≈183 million per year). By highway travel volume, Brown outranks 85% of counties in South Dakota. Trucks constitute 9.1% of highway traffic.

Analytical insight

At 9.1%, highway truck share is 33% lower than the state average, marking Brown as a primarily local traffic hub - underscoring the importance of local access for logistics operators. 2% of counties in South Dakota see a lower highway truck share than Brown's 9.1%. Brown's highway truck count is higher than 54% of counties in South Dakota, at roughly 1,125 trucks per day.
non-highway traffic icon

Non-highway traffic

Traffic

4,236

Trucks

5.0%

Average travel time

34.4 min

Drivers’ average age

46.8 yrs

Drivers’ average income

$73,932

The non-highway road network in Brown County, South Dakota supports a substantial volume of traffic. The average non-highway road carries 4,236 vehicles per day, 66% less than the average highway in the same area, which carries 12,434 vehicles per day. That average covers 421 non-highway road miles divided in 3,380 segments (average segment length 658 ft), together carrying 580,448 vehicle-miles traveled per day (≈212 million per year). Trucks constitute 5.0% of non-highway traffic.

Analytical insight

Compared to highways, non-highway routes see 45% fewer trucks by share. 34% of counties in South Dakota see shorter overall travel times than Brown. 65% of counties in South Dakota see lower average driver income among trip origins than Brown. Brown's median driver age is higher than 25% of counties in South Dakota.

Time-of-Day & Seasonal Patterns

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Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 63% higher than the daily average.
Weekend traffic:
Weekend volumes run about 25% below weekday levels.
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Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +11% versus the annual average.
Lowest month:
March is the quietest month, with volumes -16% versus the annual average.

Analytical insight

In Brown County, South Dakota, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +11% in high season.

Traffic Flow Profile Comparison

Metric

Brown

South Dakota
Average

Difference

Traffic

5,442

3,156

+72.4%

Truck % (Total Traffic)

6.9%

10.3%

-33.0%

Truck % (Highway)

9.1%

13.6%

-33.4%

Avg. Travel Time

34.1 min

32.5 min

+5.0%

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.
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Data current as of:
Q3 2026

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