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Traffic heat map of Aroostook County, Maine: 797 miles of roads shaded from blue (light) to red (heavy traffic), busiest on State Street and Main Street

Aroostook County, Maine Traffic Counts

TrafficZoom tracks traffic on 797 road miles in Aroostook County, Maine, divided into 5,731 segments averaging 734 ft. Its highways carry the highest truck share of any county in Maine, 16.3%. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 Aroostook County, Maine

Traffic

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

vehicles per day3,021
Trucks

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

10.3%
Average travel time

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

36.9 min
Congestion ratio

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

9.2%
Drivers’ average age

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

53.2 yrs
Drivers’ average income

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

$59,487

Our data shows 3,021 vehicles per day on the average road in Aroostook County, Maine, and 1,628,975 vehicle-miles traveled per day (≈595 million per year) across its 797 miles of monitored roads. Trucks are 10.3% of traffic, more than the 8.7% across Maine.

Quieter roads than 80% of counties in Maine

At 3,021 vehicles per day, the average monitored road in Aroostook carries 38% less traffic than the state average of 4,836, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 5.0% of Maine's statewide total of vehicle-miles. 80% of counties in Maine see more traffic than Aroostook's 3,021 vehicles per day.

The average trip takes 36.9 minutes, 7% higher than the state level. On travel time, Aroostook runs longer than 80% of counties in Maine.

The congestion ratio of 9.2% is 37% lower, pointing to smoother traffic flow than the state level - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Aroostook County, Maine

Trafficvehicles per day1,770
Trucks16.3%
Average travel time49.4 min
Congestion ratio4.6%
Drivers’ average age53.8 yrs
Drivers’ average income$61,459

Highways carry a smaller share of travel in Aroostook County, Maine, 20% of vehicle-miles; most driving happens on local roads. The average highway carries 1,770 vehicles per day, 42% less than the average non-highway road in the same area, which carries 3,056 vehicles per day.

Highways also make up about 18% of the monitored road miles: 141 miles in 157 segments, together carrying 328,485 vehicle-miles traveled per day (≈120 million per year).

The highest highway truck share of any county in Maine

The concentration of trucks on highways (16.3%) is 32% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

At 16.3%, Aroostook's highway truck concentration is the highest in Maine. 93% of counties in Maine see more highway trucks per day than Aroostook's roughly 289.

non-highway traffic icon

Non-highway Traffic in Aroostook County, Maine

Trafficvehicles per day3,056
Trucks8.8%
Average travel time36.6 min
Congestion ratio9.3%
Drivers’ average age53.2 yrs
Drivers’ average income$59,324

Most travel in Aroostook County, Maine happens on local roads, 80% of all vehicle-miles. The average non-highway road carries 3,056 vehicles per day.

Local roads also make up about 82% of the monitored road miles: 656 miles in 5,574 segments, together carrying 1,300,490 vehicle-miles traveled per day (≈475 million per year). Trucks make up 8.8% of non-highway traffic, about 1 in 11 vehicles.

Drivers from lower-income areas than 87% of counties in Maine

Non-highway roads carry a truck concentration that's 46% lower than the highway network.

The non-highway congestion ratio of 9.3% is 33% lower than the state level, suggesting more efficient local mobility than the state average.

87% of counties in Maine see higher average driver income among trip origins than Aroostook. The driver population here skews older than 60% of counties in Maine.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 67% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 21% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +12% versus the annual average.
Lowest month:
January is the quietest month, with volumes -18% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Aroostook County, Maine, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Aroostook County vs. Maine Traffic Comparison

The average daily traffic per road sets Aroostook County apart: 38% below the Maine average. Its highway truck share, by contrast, is 32% above.

MetricAroostook CountyMaine averageDifference
Traffic3,0214,836-37.5%
Truck % (Total Traffic)10.3%8.7%+18.4%
Truck % (Highway)16.3%12.3%+32.1%
Avg. Travel Time36.9 min34.6 min+6.6%

How Aroostook County compares

Aroostook County against nearby counties

Aroostook 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 third busiest roads of the five.

Aroostook County and the 4 nearest county-level areas by centroid distance, with the Maine average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Aroostook County3,02110.3%1,628,97536.9 min9.2%
Piscataquis County, Maine2,6098.9%370,85737.8 min8.9%
Penobscot County, Maine5,0259.6%3,894,05032.4 min15.9%
Washington County, Maine1,9209.1%825,65536.3 min6.9%
Somerset County, Maine3,2959.7%1,529,06635.5 min10.1%
Maine average4,8368.7%N/A34.6 min14.6%

Aroostook County ranked within Maine

On truck share on highways, Aroostook County tops the Maine field outright.

Aroostook County ranked among 16 county-level areas in Maine (1 = highest); measures without data in every county rank a smaller field, down to 15.
MeasureAroostook CountyMaine rank
Traffic volume (AADT)3,021#13 of 16
Highway vehicle-miles per day328,485#10 of 15
Truck share on highways16.3%#1 of 15
Highway trucks per day289#14 of 15
Average travel time36.9 min#4 of 16
Average driver income$59,487#14 of 16
Average driver age53.2 yrs#7 of 16

Aroostook County ranks #1 of 15 on truck share on highways but #14 of 15 on highway truck volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Aroostook County, Maine

On their busiest stretches, the three busiest roads in Aroostook County carry 13,666 vehicles a day on average, 4.5 times the typical road in the county (3,021).

State Street is the busiest road, at 18,761 vehicles a day, 929 of them trucks (5.0%). No other road comes close: Main Street, in second place, carries 11,846. It also carries the most trucks.

Trips using State Street are long: a median of 100.8 minutes against 36.9 county-wide, the mark of a through route.

Trucks make up 16.4% of traffic on I 95, against 10.3% across all roads in the county.

Main Street is busy with cars rather than freight: only 5.0% of its traffic is trucks, against 10.3% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1State StreetSecondary road · 18,761vehicles929trucks · 5.0%
Road class
Secondary road
Congestion ratio
48.7%
Median trip time
100.8 min
Drivers’ median age
53.3 yrs
Drivers’ average income
$57,579

Delays build on State Street: its congestion ratio of 49% over free-flow time is well above the county's 9%.

2Main StreetPrimary road · 11,846vehicles598trucks · 5.0%
Road class
Primary road
Congestion ratio
18.2%
Median trip time
35.4 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$59,152

Main Street carries 3.9 times the county average at its busiest, 598 of them trucks (5.0%, below the county-wide 10.3%).

3North StreetPrimary road · 10,392vehicles581trucks · 5.6%
Road class
Primary road
Congestion ratio
32.1%
Median trip time
30.4 min
Drivers’ median age
52.3 yrs
Drivers’ average income
$65,391

Travel on North Street's busiest stretch runs 32% over free-flow time, against 9% across the county, so expect slower peak hours.

4Caribou RoadPrimary road · 9,475vehicles616trucks · 6.5%
Road class
Primary road
Congestion ratio
25.1%
Median trip time
32.2 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$58,989

Caribou Road carries 3.1 times the county average on its busiest stretch, where the median trip lasts 32.2 minutes.

5Mechanic StreetSecondary road · 8,131vehicles429trucks · 5.3%
Road class
Secondary road
Congestion ratio
22.3%
Median trip time
37.9 min
Drivers’ median age
52.5 yrs
Drivers’ average income
$62,194

At 2.7 times the county average, Mechanic Street draws drivers from neighborhoods averaging $62,194 in household income.

Ranked by trucks per day

Cars and light vehiclesTrucks
1State StreetSecondary road · #1 by traffic18,761vehicles929trucks · 5.0%
2I 95Motorway · 4,441vehicles726trucks · 16.4%
Road class
Motorway
Congestion ratio
3.9%
Median trip time
58.1 min
Drivers’ median age
54.3 yrs
Drivers’ average income
$62,100

I 95 carries through traffic: the median trip using it lasts 58.1 minutes, against 36.9 for the county.

3Caribou RoadPrimary road · #4 by traffic9,475vehicles616trucks · 6.5%
4Main StreetPrimary road · #2 by traffic11,846vehicles598trucks · 5.0%
5North StreetPrimary road · #3 by traffic10,392vehicles581trucks · 5.6%
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

AroostookDepartment 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 Aroostook County

The same traffic breakdown for the areas closest to Aroostook County, Maine.

Need segment-level traffic data?

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