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Sullivan County, New Hampshire Traffic Counts

This page delivers traffic analytics for Sullivan County, New Hampshire. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Sullivan County, New Hampshire among 289 road miles divided in 3,618 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 422 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

3,695

Trucks

8.2%

Average travel time

34.4 min

Congestion ratio

11.8%

Drivers’ average age

52.0 yrs

Drivers’ average income

$83,982

Our data indicates an estimated average traffic volume of 3,695 vehicles per day in Sullivan County, New Hampshire that results in 858,450 vehicle-miles traveled per day (≈313 million per year). The traffic stream is comprised of an average of 1 truck for every 12 vehicles. Typical time spent behind the wheel per trip is 34.4 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the New Hampshire state averages: Sullivan's average daily traffic volume is 35% lower than the state average - 3,695 vehicles per day against 5,669 - suggesting less traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 858,450 vehicle-miles traveled per day (≈313 million per year), roughly 2.6% of New Hampshire's statewide total. At 34.4 minutes, the average travel time is 5% higher than the state level. At 32% lower than the state level, the 11.8% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. 22% of counties in New Hampshire see less traffic than Sullivan's 3,695 vehicles per day. Its average travel time of 34.4 minutes is longer than 67% of counties in New Hampshire.

Highway vs. Non-Highway Traffic Analysis

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Highway Traffic

Traffic

8,019

Trucks

9.7%

Average travel time

34.2 min

Congestion ratio

20.2%

Drivers’ average age

52.1 yrs

Drivers’ average income

$90,646

A significant volume of traffic in Sullivan County, New Hampshire utilizes the highway network. The average highway carries 8,019 vehicles per day, 207% more than the average non-highway road in the same area, which carries 2,611 vehicles per day. That average covers 54 highway road miles divided in 725 segments (average segment length 394 ft), together carrying 415,891 vehicle-miles traveled per day (≈152 million per year). Trucks constitute 9.7% of highway traffic.

Analytical insight

The concentration of trucks on highways (9.7%) is 13% higher than the state average for similar road classifications. This indicates Sullivan serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. Sullivan's highway truck share (9.7%) is higher than 89% of counties in New Hampshire. 33% of counties in New Hampshire see fewer highway trucks per day than Sullivan's roughly 781.
non-highway traffic icon

Non-highway traffic

Traffic

2,611

Trucks

6.8%

Average travel time

34.5 min

Congestion ratio

9.7%

Drivers’ average age

51.6 yrs

Drivers’ average income

$77,096

The non-highway road network in Sullivan County, New Hampshire supports a substantial volume of traffic. The average non-highway road carries 2,611 vehicles per day, 67% less than the average highway in the same area, which carries 8,019 vehicles per day. That average covers 235 non-highway road miles divided in 2,893 segments (average segment length 429 ft), together carrying 442,559 vehicle-miles traveled per day (≈162 million per year). Trucks constitute 6.8% of non-highway traffic.

Analytical insight

Non-highway roads carry a truck concentration that's 30% lower than the highway network. At 40% lower than the state level, the non-highway congestion ratio of 9.7% signals easier movement on local roads. 67% of counties in New Hampshire see shorter overall travel times than Sullivan. 33% of counties in New Hampshire see lower average driver income among trip origins than Sullivan. Sullivan's median driver age is higher than 67% of counties in New Hampshire.

Time-of-Day & Seasonal Patterns

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Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 2:00 PM–6:00 PM, with volumes reaching approximately 77% higher than the daily average.
Weekend traffic:
Weekend volumes run about 27% below weekday levels.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +8% versus the annual average.
Lowest month:
January is the quietest month, with volumes -14% versus the annual average.

Analytical insight

In Sullivan County, New Hampshire, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +8% in high season.

Traffic Flow Profile Comparison

Metric

Sullivan

New Hampshire
Average

Difference

Traffic

3,695

5,669

-34.8%

Truck % (Total Traffic)

8.2%

7.0%

+17.1%

Truck % (Highway)

9.7%

8.6%

+12.7%

Avg. Travel Time

34.4 min

32.7 min

+5.3%

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

New HampshireDepartment 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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