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Traffic heat map of Knox County, Maine: 222 miles of roads shaded from blue (light) to red (heavy traffic), busiest on New County Road and Elm Street

Knox County, Maine Traffic Counts

Traffic analytics for Knox County, Maine, calculated from real-world mobile and sensor networks on 3,095 road segments (222 road miles, about 379 ft each). Its highways carry the lowest truck share of any county in Maine, 7.4%. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Knox County, Maine

Traffic

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

vehicles per day4,191
Trucks

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

7.0%
Average travel time

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

33.2 min
Congestion ratio

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

12.5%
Drivers’ average age

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

53.9 yrs
Drivers’ average income

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

$70,269

Our data shows 4,191 vehicles per day on the average road in Knox County, Maine, and 758,650 vehicle-miles traveled per day (≈277 million per year) across its 222 miles of monitored roads. About 1 in 14 vehicles is a truck, fewer than the 1 in 11 across Maine.

Shorter trips than 87% of counties in Maine

At 4,191 vehicles per day, the average road in Knox carries somewhat less traffic than the state average of 4,836 (13% less) - a factor worth weighing in site selection and logistics planning. Network-wide, Knox accounts for about 2.3% of Maine's statewide total of vehicle-miles. Knox carries more traffic than 60% of counties in Maine.

Journey times here (33.2 minutes on average) closely track the state level. Its average travel time of 33.2 minutes is shorter than 87% of counties in Maine.

The congestion ratio of 12.5% runs slightly lower than the state level (14% lower) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Knox County, Maine

Trafficvehicles per day10,232
Trucks7.4%
Average travel time32.3 min
Congestion ratio27.3%
Drivers’ average age54.3 yrs
Drivers’ average income$68,906

Highways carry a significant share of travel in Knox County, Maine: 31% of all vehicle-miles. The average highway carries 10,232 vehicles per day, 267% more than the average non-highway road in the same area, which carries 2,789 vehicles per day.

Yet highways are only 10% of the road network, 23 miles in 583 segments, so each mile of them is 3.0 times as busy as the average road mile.

The lowest highway truck share of any county in Maine

Highway truck concentration here runs 40% lower than the state average, at 7.4%. Highways here carry mainly commuter and local trips, with little through freight.

Knox also posts the lowest highway truck share in Maine - 7.4%. 57% of counties in Maine see more highway trucks per day than Knox's roughly 753.

non-highway traffic icon

Non-highway Traffic in Knox County, Maine

Trafficvehicles per day2,789
Trucks6.8%
Average travel time33.4 min
Congestion ratio9.1%
Drivers’ average age53.1 yrs
Drivers’ average income$71,191

A little more than half of the driving in Knox County, Maine happens on local roads: 69% of all vehicle-miles. The average non-highway road carries 2,789 vehicles per day.

Spread over 199 miles and 2,512 segments, 90% of the road network, local roads carry a lighter load per mile: 520,190 vehicle-miles traveled per day (≈190 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.8%).

Older drivers than 73% of counties in Maine

Non-highway roads carry a truck concentration that's 7% lower than the highway network.

At 35% lower than the state level, the non-highway congestion ratio of 9.1% signals easier movement on local roads.

53% of counties in Maine see lower average driver income among trip origins than Knox. 73% of counties in Maine have a younger driver population than Knox.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Knox County, Maine, the peak hour concentrates about 8% of the day's traffic.

Knox County vs. Maine Traffic Comparison

The highway truck share sets Knox County apart: 40% below the Maine average. Its truck share is also 20% below.

MetricKnox CountyMaine averageDifference
Traffic4,1914,836-13.3%
Truck % (Total Traffic)7.0%8.7%-19.5%
Truck % (Highway)7.4%12.3%-40.4%
Avg. Travel Time33.2 min34.6 min-4.2%

How Knox County compares

Knox County moves the least traffic of its nearby counties

Nothing in this table sets Knox County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Knox 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
Knox County4,1917.0%758,65033.2 min12.5%
Waldo County, Maine3,0008.4%977,40840.3 min9.8%
Lincoln County, Maine3,6297.4%924,04434.1 min12.8%
Hancock County, Maine4,0167.6%1,756,95134.6 min12.9%
Sagadahoc County, Maine4,30410.3%1,256,43433.6 min12.7%
Maine average4,8368.7%N/A34.6 min14.6%

Knox County ranked within Maine

Knox County records the lowest truck share on highways in Maine.

Knox County ranked among 16 county-level areas in Maine (1 = highest); measures without data in every county rank a smaller field, down to 15.
MeasureKnox CountyMaine rank
Traffic volume (AADT)4,191#7 of 16
Highway vehicle-miles per day238,460#11 of 15
Truck share on highways7.4%#15 of 15
Highway trucks per day753#9 of 15
Average travel time33.2 min#14 of 16
Average driver income$70,269#8 of 16
Average driver age53.9 yrs#5 of 16

Knox County ranks #5 of 16 on average driver age but #15 of 15 on truck share on highways - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Knox County, Maine

The three busiest roads in Knox County average 12,502 vehicles a day, 3.0 times the county average of 4,191 across all its monitored roads.

New County Road is the busiest road, at 12,962 vehicles a day, 1,077 of them trucks (8.3%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1New County RoadTrunk road · 12,962vehicles1,077trucks · 8.3%
Road class
Trunk road
Congestion ratio
32.7%
Median trip time
28.3 min
Drivers’ median age
54.2 yrs
Drivers’ average income
$64,474

New County Road is one of the more congested roads here: trips take 33% longer than at free-flow speed, against 13% county-wide.

2Elm StreetTrunk road · 12,376vehicles928trucks · 7.5%
Road class
Trunk road
Congestion ratio
31.9%
Median trip time
33.2 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$78,626

At 3.0 times the county average, Elm Street draws drivers from neighborhoods averaging $78,626 in household income.

3Main StreetTrunk road · 12,168vehicles872trucks · 7.2%
Road class
Trunk road
Congestion ratio
33.4%
Median trip time
26.3 min
Drivers’ median age
54.0 yrs
Drivers’ average income
$65,568

Delays build on Main Street: its congestion ratio of 33% over free-flow time is well above the county's 13%.

4Commercial StreetTrunk road · 11,763vehicles754trucks · 6.4%
Road class
Trunk road
Congestion ratio
29.7%
Median trip time
33.7 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$75,214

The busiest stretch of Commercial Street carries 2.8 times the county average; trucks are 6.4% of it, below the county-wide 7.0%.

5Camden StreetTrunk road · 10,385vehicles604trucks · 5.8%
Road class
Trunk road
Congestion ratio
28.6%
Median trip time
33.8 min
Drivers’ median age
54.5 yrs
Drivers’ average income
$69,285

On its busiest stretch, Camden Street carries 2.5 times the county average; trucks are 5.8% of it, below the county-wide 7.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1New County RoadTrunk road · #1 by traffic12,962vehicles1,077trucks · 8.3%
2Elm StreetTrunk road · #2 by traffic12,376vehicles928trucks · 7.5%
3Main StreetTrunk road · #3 by traffic12,168vehicles872trucks · 7.2%
4Atlantic HighwayTrunk road · 9,622vehicles766trucks · 8.0%
Road class
Trunk road
Congestion ratio
23.8%
Median trip time
35.0 min
Drivers’ median age
53.7 yrs
Drivers’ average income
$67,935

Atlantic Highway peaks at 9,622 vehicles a day, 2.3 times the county average; trucks are 8.0% of it, above the county-wide 7.0%.

5Commercial StreetTrunk road · #4 by traffic11,763vehicles754trucks · 6.4%
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

KnoxDepartment 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 Knox County

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

Need segment-level traffic data?

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