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Merrimack County, New Hampshire Traffic Counts

This page delivers traffic analytics for Merrimack County, New Hampshire. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Merrimack County, New Hampshire among 748 road miles divided in 15,739 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 251 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

5,275

Trucks

7.6%

Average travel time

33.3 min

Congestion ratio

16.9%

Drivers’ average age

48.3 yrs

Drivers’ average income

$102,246

Our data indicates an estimated average traffic volume of 5,275 vehicles per day in Merrimack County, New Hampshire that results in 5,263,011 vehicle-miles traveled per day (≈1.9 billion per year). The traffic stream is comprised of an average of 1 truck for every 13 vehicles. Typical time spent behind the wheel per trip is 33.3 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the New Hampshire state averages: Merrimack's average daily traffic volume is 7% lower than the state average - 5,275 vehicles per day against 5,669 - suggesting less traffic load per road, a critical factor for logistics and site planning. Network-wide, Merrimack accounts for about 16% of New Hampshire's statewide total, at 5,263,011 vehicle-miles traveled per day (≈1.9 billion per year). At 33.3 minutes, the average travel time is 2% higher than the state level. Congestion runs 3% lower than the state level, at a ratio of 16.9% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, Merrimack's 5,275 vehicles per day outpaces 56% of counties in New Hampshire. On travel time, Merrimack runs longer than 33% of counties in New Hampshire.

Highway vs. Non-Highway Traffic Analysis

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Highway Traffic

Traffic

12,228

Trucks

9.0%

Average travel time

43.1 min

Congestion ratio

32.3%

Drivers’ average age

48.8 yrs

Drivers’ average income

$102,780

A significant volume of traffic in Merrimack County, New Hampshire utilizes the highway network. The average highway carries 12,228 vehicles per day, 168% more than the average non-highway road in the same area, which carries 4,563 vehicles per day. That average covers 198 highway road miles divided in 1,461 segments (average segment length 715 ft), together carrying 3,146,640 vehicle-miles traveled per day (≈1.1 billion per year). By highway travel volume, Merrimack outranks 78% of counties in New Hampshire. Trucks constitute 9.0% of highway traffic.

Analytical insight

At 9.0%, highway truck share is 4% higher than the state average, marking Merrimack as a significant freight corridor - underscoring the importance of highway access for logistics operators. Merrimack's highway truck share (9.0%) is higher than 56% of counties in New Hampshire. By raw truck volume, Merrimack carries more highway trucks than 78% of counties in New Hampshire.
non-highway traffic icon

Non-highway traffic

Traffic

4,563

Trucks

5.5%

Average travel time

32.3 min

Congestion ratio

15.3%

Drivers’ average age

48.0 yrs

Drivers’ average income

$101,778

The non-highway road network in Merrimack County, New Hampshire supports a substantial volume of traffic. The average non-highway road carries 4,563 vehicles per day, 63% less than the average highway in the same area, which carries 12,228 vehicles per day. That average covers 550 non-highway road miles divided in 14,278 segments (average segment length 203 ft), together carrying 2,116,372 vehicle-miles traveled per day (≈772 million per year). Trucks constitute 5.5% of non-highway traffic.

Analytical insight

The concentration of trucks on non-highway roads is 39% lower than on highways. Non-highway congestion (15.3%) runs 5% lower than the state average, pointing to smoother local traffic flow. 33% of counties in New Hampshire see shorter overall travel times than Merrimack. Merrimack's average driver income exceeds 78% of counties in New Hampshire. 22% of counties in New Hampshire have a younger driver population than Merrimack.

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 4:00 PM–6:00 PM, with volumes reaching approximately 84% higher than the daily average.
Weekend traffic:
Weekend volumes run about 12% below weekday levels.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +11% versus the annual average.
Lowest month:
January is the quietest month, with volumes -13% versus the annual average.

Analytical insight

In Merrimack County, New Hampshire, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +11% in high season.

Traffic Flow Profile Comparison

Metric

Merrimack

New Hampshire
Average

Difference

Traffic

5,275

5,669

-7.0%

Truck % (Total Traffic)

7.6%

7.0%

+8.3%

Truck % (Highway)

9.0%

8.6%

+4.4%

Avg. Travel Time

33.3 min

32.7 min

+2.0%

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

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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