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Slope County, North Dakota Traffic Counts

This page delivers traffic analytics for Slope County, North Dakota. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Slope County, North Dakota among 61 road miles divided in 202 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 1,594 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

764

Trucks

13.4%

Average travel time

58.9 min

Congestion ratio

2.8%

Drivers’ average age

45.8 yrs

Drivers’ average income

$77,561

Our data indicates an estimated average traffic volume of 764 vehicles per day in Slope County, North Dakota that results in 55,462 vehicle-miles traveled per day (≈20.2 million per year). The traffic stream is comprised of an average of 1 truck for every 7 vehicles. Typical time spent behind the wheel per trip is 58.9 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the North Dakota state averages: At 764 vehicles per day, the average monitored road in Slope carries 65% less traffic than the state average of 2,174 vehicles per day - a critical factor for logistics and site planning. In total volume terms, its road network carries 55,462 vehicle-miles traveled per day (≈20.2 million per year), about 0.3% of North Dakota's statewide total. The average trip takes 58.9 minutes, 59% higher than the state level. Congestion runs 74% lower than the state level, at a ratio of 2.8% - smoother traffic flow - crucial for traffic control improvement and logistics planning. 40% of counties in North Dakota see less traffic than Slope's 764 vehicles per day. On travel time, Slope runs longer than 98% of counties in North Dakota.

Highway vs. Non-Highway Traffic Analysis

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Highway Traffic

Traffic

1,275

Trucks

14.0%

Average travel time

60.9 min

Congestion ratio

2.8%

Drivers’ average age

44.4 yrs

Drivers’ average income

$78,135

A significant volume of traffic in Slope County, North Dakota utilizes the highway network. The average highway carries 1,275 vehicles per day, 180% more than the average non-highway road in the same area, which carries 456 vehicles per day. That average covers 32 highway road miles divided in 76 segments (average segment length 2,211 ft), together carrying 44,010 vehicle-miles traveled per day (≈16.1 million per year). Trucks constitute 14.0% of highway traffic.

Analytical insight

Highway truck concentration here runs 3% lower than the state average, at 14.0% - positioning Slope as a primarily local traffic hub. For logistics operators, this validates the importance of local access. Slope's highway truck share (14.0%) is higher than 35% of counties in North Dakota. By raw truck volume, Slope carries more highway trucks than 32% of counties in North Dakota.
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Non-highway traffic

Traffic

456

Trucks

10.8%

Average travel time

57.7 min

Drivers’ average age

59.7 yrs

Drivers’ average income

$72,010

The non-highway road network in Slope County, North Dakota supports a substantial volume of traffic. The average non-highway road carries 456 vehicles per day, 64% less than the average highway in the same area, which carries 1,275 vehicles per day. That average covers 29 non-highway road miles divided in 126 segments (average segment length 1,222 ft), together carrying 11,452 vehicle-miles traveled per day (≈4.2 million per year). Trucks constitute 10.8% of non-highway traffic.

Analytical insight

The concentration of trucks on non-highway roads is 23% lower than on highways. Overall, average travel time here is longer than 98% of counties in North Dakota. Trip origins here have higher average income than 48% of counties in North Dakota. The driver population here skews older than 33% of counties in North 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 2:00 PM–3:00 PM, with volumes reaching approximately 100% higher than the daily average.
Weekend traffic:
Weekend volumes run about 39% below weekday levels.
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Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +14% versus the annual average.
Lowest month:
February is the quietest month, with volumes -21% versus the annual average.

Analytical insight

In Slope County, North Dakota, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +14% in high season.

Traffic Flow Profile Comparison

Metric

Slope

North Dakota
Average

Difference

Traffic

764

2,174

-64.9%

Truck % (Total Traffic)

13.4%

11.1%

+20.5%

Truck % (Highway)

14.0%

14.5%

-3.2%

Avg. Travel Time

58.9 min

37.0 min

+59.0%

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

North 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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