This page delivers traffic analytics for Grafton County, New Hampshire. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Grafton County, New Hampshire among 711 road miles divided in 8,406 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 447 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.
The average number of vehicles that travel each day over any road in the road network.
3,675
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.0 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
13.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.9 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$89,651
Our data indicates an estimated average traffic volume of 3,675 vehicles per day in Grafton County, New Hampshire that results in 2,635,474 vehicle-miles traveled per day (≈962 million 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 30.0 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the New Hampshire state averages: Grafton sees 35% lower average daily traffic volume than the state average (3,675 vehicles per day against 5,669), suggesting less demand on each road - a critical factor for logistics and site planning. Across the whole network that adds up to 2,635,474 vehicle-miles traveled per day (≈962 million per year), roughly 8.0% of New Hampshire's statewide total. The average trip takes 30.0 minutes, 8% lower than the state level. Congestion runs 24% lower than the state level, at a ratio of 13.2% - smoother traffic flow - crucial for traffic control improvement and logistics planning. Grafton carries more traffic than 11% of counties in New Hampshire. At 30.0 minutes, Grafton also has the lowest average travel time in New Hampshire.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
6,993
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
9.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
44.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
16.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$92,157
A significant volume of traffic in Grafton County, New Hampshire utilizes the highway network. The average highway carries 6,993 vehicles per day, 100% more than the average non-highway road in the same area, which carries 3,497 vehicles per day. That average covers 170 highway road miles divided in 427 segments (average segment length 2,097 ft), together carrying 1,184,661 vehicle-miles traveled per day (≈432 million per year). 56% of counties in New Hampshire move less traffic on their highways. Trucks constitute 9.8% of highway traffic.
Analytical insight
At 9.8%, highway truck share is 14% higher than the state average, marking Grafton as a significant freight corridor - underscoring the importance of highway access for logistics operators. Grafton also posts the highest highway truck share in New Hampshire - 9.8%. By raw truck volume, Grafton carries more highway trucks than 11% of counties in New Hampshire.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
3,497
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
29.2 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
13.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$88,336
The non-highway road network in Grafton County, New Hampshire supports a substantial volume of traffic. The average non-highway road carries 3,497 vehicles per day, 50% less than the average highway in the same area, which carries 6,993 vehicles per day. That average covers 542 non-highway road miles divided in 7,979 segments (average segment length 359 ft), together carrying 1,450,813 vehicle-miles traveled per day (≈530 million per year). Trucks constitute 6.5% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 34% lower than on highways. At 19% lower than the state level, the non-highway congestion ratio of 13.0% signals easier movement on local roads. Grafton also posts the lowest overall average travel time in New Hampshire - 30.0 minutes. Grafton's average driver income exceeds 44% of counties in New Hampshire. 56% of counties in New Hampshire have a younger driver population than Grafton.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 12:00 PM–6:00 PM, with volumes reaching approximately 76% higher than the daily average.
Weekend traffic:
Weekend volumes run about 11% below weekday levels.
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +15% versus the annual average.
Lowest month:
December is the quietest month, with volumes -19% versus the annual average.
Analytical insight
In Grafton County, New Hampshire, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +15% in high season.
Traffic Flow Profile Comparison
Metric
Grafton
New Hampshire
Average
Difference
Traffic
3,675
5,669
-35.2%
Truck % (Total Traffic)
8.0%
7.0%
+13.8%
Truck % (Highway)
9.8%
8.6%
+13.9%
Avg. Travel Time
30.0 min
32.7 min
-8.2%
Frequently Asked Questions
The average daily traffic volume is calculated at 3,675 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - Grafton has the highest highway truck share of any county in New Hampshire, at 9.8%.
Approximately 23% of highway traffic and 8% of non-highway traffic consists of vehicles whose trip originates outside Grafton County, New Hampshire. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Trucks account for approximately 8.0% of the total traffic mix across all road types, with a significantly higher concentration of 9.8% on highways.
Drivers on Grafton roads have a median age of 50 years, and the median household income of the neighborhoods trips originate from averages $89,651 - useful context for retail siting and customer profiling.
Traffic volumes are typically 15% higher during July–September. Volumes drop to their lowest levels in December, averaging 2,984 vehicles per day - a 19% decrease from the annual average.
Weekday peaks occur between 10:00 AM and 12:00 PM in the morning and between 12:00 PM and 6:00 PM in the evening - about 76% above the daily average.
The average travel time for drivers is 30.0 minutes, offering a standard metric for commute and delivery route planning.
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)
