Need segment-level traffic data?

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

Get insights →
Traffic heat map of Hillsborough, New Hampshire: 888 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 93 and I 293

Hillsborough, New Hampshire Traffic Counts

How busy are the roads of Hillsborough, New Hampshire? We measure 888 road miles, divided into 24,605 segments, with multi-sourced, cross-verified mobile and sensor data. It has the busiest roads of any county in New Hampshire, averaging 7,083 vehicles a day. 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Hillsborough, New Hampshire

Traffic

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

vehicles per day7,083
Trucks

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

6.0%
Average travel time

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

32.5 min
Congestion ratio

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

21.6%
Drivers’ average age

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

47.2 yrs
Drivers’ average income

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

$118,363

The average monitored road in Hillsborough, New Hampshire carries 7,083 vehicles per day. Across its 888 miles of monitored roads, that adds up to 7,274,784 vehicle-miles traveled per day (≈2.7 billion per year). About 1 in 17 vehicles is a truck, fewer than the 1 in 14 across New Hampshire.

The busiest roads of any county in New Hampshire

At 7,083 vehicles per day, the average monitored road in Hillsborough carries 25% 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, Hillsborough accounts for about 22% of New Hampshire's statewide total of vehicle-miles. At 7,083 vehicles per day, Hillsborough posts the highest average traffic volume in New Hampshire.

At 32.5 minutes, the average travel time matches the state level closely. Its average travel time of 32.5 minutes is shorter than 78% of counties in New Hampshire.

The congestion ratio of 21.6% is 23% higher, pointing to more pronounced congestion than the state level - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Hillsborough, New Hampshire

Trafficvehicles per day18,232
Trucks7.2%
Average travel time35.8 min
Congestion ratio40.6%
Drivers’ average age47.6 yrs
Drivers’ average income$119,382

Travel in Hillsborough, New Hampshire splits roughly evenly, with about half of it (48% of vehicle-miles) on highways. The average highway carries 18,232 vehicles per day, 189% more than the average non-highway road in the same area, which carries 6,304 vehicles per day.

With 17% of the road miles (154 miles in 1,608 segments), highways punch above their length, carrying 3,525,044 vehicle-miles traveled per day (≈1.3 billion per year).

That is more highway travel volume than 89% of counties in New Hampshire.

The lowest highway truck share of any county in New Hampshire

At 7.2%, highway truck share is 16% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

At 7.2%, Hillsborough's highway truck concentration is the lowest in New Hampshire. By raw truck volume, Hillsborough carries more highway trucks than 89% of counties in New Hampshire.

non-highway traffic icon

Non-highway Traffic in Hillsborough, New Hampshire

Trafficvehicles per day6,304
Trucks4.8%
Average travel time32.3 min
Congestion ratio20.2%
Drivers’ average age46.7 yrs
Drivers’ average income$117,744

Travel in Hillsborough, New Hampshire splits roughly evenly, with about half of it (52% of vehicle-miles) on local roads. The average non-highway road carries 6,304 vehicles per day.

Spread over 734 miles and 22,997 segments, 83% of the road network, local roads carry a lighter load per mile: 3,749,739 vehicle-miles traveled per day (≈1.4 billion per year). The truck share on non-highway roads is 4.8%.

Drivers from higher-income areas than 89% of counties in New Hampshire

The concentration of trucks on non-highway roads is 34% lower than on highways.

At 25% higher than the state level, the non-highway congestion ratio of 20.2% signals more friction on local roads.

Hillsborough's average driver income is higher than 89% of counties in New Hampshire. Hillsborough's median driver age is lower than 89% of counties in New Hampshire.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 75% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 16% below weekday levels, the usual weekend dip.
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 -15% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Hillsborough, New Hampshire, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +8% in high season.

Hillsborough vs. New Hampshire Traffic Comparison

The average daily traffic per road sets Hillsborough apart: 25% above the New Hampshire average. Its highway truck share, by contrast, is 16% below.

MetricHillsboroughNew Hampshire averageDifference
Traffic7,0835,669+24.9%
Truck % (Total Traffic)6.0%7.0%-15.1%
Truck % (Highway)7.2%8.6%-16.4%
Avg. Travel Time32.5 min32.7 min-0.6%

How Hillsborough compares

Hillsborough is more congested than any nearby county

Set against the average of the 4 areas nearest to it, Hillsborough is 40.7% more congested and carries 42.4% more traffic on a typical road; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Hillsborough 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
Hillsborough7,0836.0%7,274,78432.5 min21.6%
Merrimack County, New Hampshire5,2757.6%5,263,01133.3 min16.9%
Cheshire County, New Hampshire4,9237.6%1,771,14334.9 min15.7%
Rockingham County, New Hampshire6,0087.3%7,966,62130.5 min16.9%
Sullivan County, New Hampshire3,6958.2%858,45034.4 min11.8%
New Hampshire average5,6697.0%N/A32.7 min17.5%

Hillsborough ranked within New Hampshire

Hillsborough posts the highest average daily traffic volume of any county-level area in New Hampshire.

Hillsborough ranked among 10 county-level areas in New Hampshire (1 = highest).
MeasureHillsboroughNew Hampshire rank
Traffic volume (AADT)7,083#1 of 10
Highway vehicle-miles per day3,525,044#2 of 10
Truck share on highways7.2%#10 of 10
Highway trucks per day1,316#2 of 10
Average travel time32.5 min#8 of 10
Average driver income$118,363#2 of 10
Average driver age47.2 yrs#9 of 10

The two ends of this table sit far apart: #1 of 10 on average daily traffic volume, against #10 of 10 on truck share on highways.

Busiest roads in Hillsborough, New Hampshire

On their busiest stretches, the three busiest roads in Hillsborough carry 73,901 vehicles a day on average, 10.4 times the typical road in the county (7,083).

I 93 leads with 95,572 vehicles a day, 9,301 of them trucks (9.7%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 93Motorway · 95,572vehicles9,301trucks · 9.7%
Road class
Motorway
Congestion ratio
52.4%
Median trip time
38.8 min
Drivers’ median age
47.7 yrs
Drivers’ average income
$115,392

A main artery: I 93's busiest stretch carries 13.5 times the county average; trucks are 9.7% of it, above the county-wide 6.0%.

2I 293Motorway · 64,295vehicles4,258trucks · 6.6%
Road class
Motorway
Congestion ratio
69.8%
Median trip time
33.2 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$119,319

Travel on I 293's busiest stretch runs 70% over free-flow time, against 22% across the county, so expect slower peak hours.

3NH 101Motorway · 61,835vehicles4,818trucks · 7.8%
Road class
Motorway
Congestion ratio
71.2%
Median trip time
33.4 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$116,009

NH 101 is one of the more congested roads here: trips take 71% longer than at free-flow speed, against 22% county-wide.

4Everett TurnpikeMotorway · 61,140vehicles4,074trucks · 6.7%
Road class
Motorway
Congestion ratio
48.9%
Median trip time
34.3 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$117,259

Everett Turnpike is a trunk route for the county, carrying 8.6 times the county average on its busiest stretch; trucks are 6.7% of it, above the county-wide 6.0%.

5Circumferential HighwayMotorway · 38,017vehicles2,252trucks · 5.9%
Road class
Motorway
Congestion ratio
30.5%
Median trip time
29.4 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$121,895

Circumferential Highway carries 5.4 times the county average at its busiest, 2,252 of them trucks (5.9%, in line with the county-wide 6.0%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 93Motorway · #1 by traffic95,572vehicles9,301trucks · 9.7%
2NH 101Motorway · #3 by traffic61,835vehicles4,818trucks · 7.8%
3I 293Motorway · #2 by traffic64,295vehicles4,258trucks · 6.6%
4Everett TurnpikeMotorway · #4 by traffic61,140vehicles4,074trucks · 6.7%
5Alan B Shepard HighwayMotorway · 31,709vehicles2,863trucks · 9.0%
Road class
Motorway
Congestion ratio
48.2%
Median trip time
37.5 min
Drivers’ median age
46.8 yrs
Drivers’ average income
$109,471

Alan B Shepard Highway carries 4.5 times the county average on its busiest stretch, where the median trip lasts 37.5 minutes.

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

HillsboroughDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Hillsborough

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

Need segment-level traffic data?

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