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Traffic heat map of Strafford County, New Hampshire: 386 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Spaulding Turnpike

Strafford County, New Hampshire Traffic Counts

How busy are the roads of Strafford County, New Hampshire? We measure 386 road miles, divided into 10,213 segments, with multi-sourced, cross-verified mobile and sensor data. Trips here are the longest of any county in New Hampshire, a median 35.6 minutes. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Strafford County, New Hampshire

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day6,752
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

6.2%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

35.6 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

21.2%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

46.2 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$95,589

The average monitored road in Strafford County, New Hampshire carries 6,752 vehicles per day. Across its 386 miles of monitored roads, that adds up to 2,815,772 vehicle-miles traveled per day (≈1.0 billion per year). About 1 in 16 vehicles is a truck, in line with New Hampshire (7.0%).

The longest trips of any county in New Hampshire

At 6,752 vehicles per day, the average monitored road in Strafford carries 19% more traffic than the state average of 5,669, suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, Strafford accounts for about 8.6% of New Hampshire's statewide total of vehicle-miles. Strafford carries more traffic than 89% of counties in New Hampshire.

The average trip takes 35.6 minutes, 9% higher than the state level. Strafford additionally records the highest average travel time of any county in New Hampshire - 35.6 minutes.

Congestion runs 21% higher than the state level, at a ratio of 21.2%, which means more pronounced congestion - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Strafford County, New Hampshire

Trafficvehicles per day14,918
Trucks7.3%
Average travel time38.2 min
Congestion ratio37.4%
Drivers’ average age47.4 yrs
Drivers’ average income$97,197

Highways carry about half of all travel in Strafford County, New Hampshire, 52% of vehicle-miles. The average highway carries 14,918 vehicles per day, 164% more than the average non-highway road in the same area, which carries 5,654 vehicles per day.

With 24% of the road miles (94 miles in 1,210 segments), highways punch above their length, carrying 1,461,573 vehicle-miles traveled per day (≈533 million per year).

That is more highway travel volume than 67% of counties in New Hampshire.

Lower highway truck share than 89% of counties in New Hampshire

Highway truck concentration here runs 16% lower than the state average, at 7.3%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 89% of counties in New Hampshire. 67% of counties in New Hampshire see fewer highway trucks per day than Strafford's roughly 1,088.

non-highway traffic icon

Non-highway Traffic in Strafford County, New Hampshire

Trafficvehicles per day5,654
Trucks5.1%
Average travel time35.2 min
Congestion ratio19.0%
Drivers’ average age45.4 yrs
Drivers’ average income$94,328

Local roads carry about half of all travel in Strafford County, New Hampshire, 48% of vehicle-miles. The average non-highway road carries 5,654 vehicles per day.

Local roads make up 76% of the monitored road miles (292 miles in 9,003 segments) but carry less than their share of travel: 1,354,200 vehicle-miles traveled per day (≈494 million per year). Trucks make up 5.1% of non-highway traffic, about 1 in 20 vehicles.

The youngest drivers of any county in New Hampshire

Non-highway roads carry a truck concentration that's 30% lower than the highway network.

Non-highway congestion (19.0%) runs 18% higher than the state average, pointing to slower local traffic flow.

Trip origins here have higher average income than 67% of counties in New Hampshire. At 46 years, Strafford's median driver age is the lowest in New Hampshire.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 79% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 22% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +10% versus the annual average.
Lowest month:
January is the quietest month, with volumes -14% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Strafford County, New Hampshire, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +10% in high season.

Strafford County vs. New Hampshire Traffic Comparison

The average daily traffic per road sets Strafford County apart: 19% above the New Hampshire average. Its highway truck share, by contrast, is 16% below.

MetricStrafford CountyNew Hampshire averageDifference
Traffic6,7525,669+19.1%
Truck % (Total Traffic)6.2%7.0%-11.0%
Truck % (Highway)7.3%8.6%-15.6%
Avg. Travel Time35.6 min32.7 min+8.9%

How Strafford County compares

Strafford County has the lowest truck share of its nearby counties

Strafford County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the busiest roads of the five.

Strafford County and the 4 nearest county-level areas by centroid distance, with the New Hampshire average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Strafford County6,7526.2%2,815,77235.6 min21.2%
Rockingham County, New Hampshire6,0087.3%7,966,62130.5 min16.9%
Belknap County, New Hampshire6,4036.9%1,912,52133.9 min20.3%
York County, Maine5,4969.0%4,922,13634.6 min16.7%
Merrimack County, New Hampshire5,2757.6%5,263,01133.3 min16.9%
New Hampshire average5,6697.0%N/A32.7 min17.5%

Strafford County ranked within New Hampshire

Strafford County posts the highest average travel time of any county-level area in New Hampshire.

Strafford County ranked among 10 county-level areas in New Hampshire (1 = highest).
MeasureStrafford CountyNew Hampshire rank
Traffic volume (AADT)6,752#2 of 10
Highway vehicle-miles per day1,461,573#4 of 10
Truck share on highways7.3%#9 of 10
Highway trucks per day1,088#4 of 10
Average travel time35.6 min#1 of 10
Average driver income$95,589#4 of 10
Average driver age46.2 yrs#10 of 10

Strafford County ranks #1 of 10 on average travel time but #10 of 10 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Strafford County, New Hampshire

Traffic concentrates on a few corridors: the three busiest roads average 27,198 vehicles a day, against 6,752 on the average road in Strafford County.

Spaulding Turnpike is the busiest road, at 34,168 vehicles a day, 2,604 of them trucks (7.6%). It also carries the most trucks.

Trips using Main Street are long: a median of 51.1 minutes against 35.6 county-wide, the mark of a through route.

Main Street draws drivers from lower-income areas: their neighborhoods average $71,369 in household income, 25% below the county's $95,589.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Spaulding TurnpikeMotorway · 34,168vehicles2,604trucks · 7.6%
Road class
Motorway
Congestion ratio
26.4%
Median trip time
38.0 min
Drivers’ median age
48.3 yrs
Drivers’ average income
$98,555

A main artery: Spaulding Turnpike's busiest stretch carries 5.1 times the county average; trucks are 7.6% of it, above the county-wide 6.2%.

2Main StreetSecondary road · 23,794vehicles988trucks · 4.2%
Road class
Secondary road
Congestion ratio
65.6%
Median trip time
51.1 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$71,369

Delays build on Main Street: its congestion ratio of 66% over free-flow time is well above the county's 21%.

3Indian Brook DrivePrimary road · 23,632vehicles1,249trucks · 5.3%
Road class
Primary road
Congestion ratio
27.2%
Median trip time
32.8 min
Drivers’ median age
43.7 yrs
Drivers’ average income
$97,878

Indian Brook Drive peaks at 23,632 vehicles a day, 3.5 times the county average; trucks are 5.3% of it, below the county-wide 6.2%.

4Farmington RoadTrunk road · 22,160vehicles1,516trucks · 6.8%
Road class
Trunk road
Congestion ratio
50.7%
Median trip time
38.2 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$85,000

Farmington Road carries 3.3 times the county average at its busiest, 1,516 of them trucks (6.8%, above the county-wide 6.2%).

5Piscataqua RoadTrunk road · 22,073vehicles1,599trucks · 7.2%
Road class
Trunk road
Congestion ratio
59.7%
Median trip time
30.7 min
Drivers’ median age
41.9 yrs
Drivers’ average income
$107,709

Travel on Piscataqua Road's busiest stretch runs 60% over free-flow time, against 21% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Spaulding TurnpikeMotorway · #1 by traffic34,168vehicles2,604trucks · 7.6%
2Piscataqua RoadTrunk road · #5 by traffic22,073vehicles1,599trucks · 7.2%
3Farmington RoadTrunk road · #4 by traffic22,160vehicles1,516trucks · 6.8%
4Knox Marsh RoadPrimary road · 21,460vehicles1,308trucks · 6.1%
Road class
Primary road
Congestion ratio
32.2%
Median trip time
42.3 min
Drivers’ median age
43.9 yrs
Drivers’ average income
$105,698

Knox Marsh Road carries 3.2 times the county average on its busiest stretch, where the median trip lasts 42.3 minutes.

5Indian Brook DrivePrimary road · #3 by traffic23,632vehicles1,249trucks · 5.3%
How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

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

StraffordDepartment of Transportation

Demographic Baseline for O-D Modeling

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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Counties near Strafford County

The same traffic breakdown for the areas closest to Strafford County, New Hampshire.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.