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Traffic heat map of Kodiak Island, Alaska: 40 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Mill Bay Road and Lower Mill Bay Road

Kodiak Island, Alaska Traffic Counts

How busy are the roads of Kodiak Island, Alaska? We measure 40 road miles, divided into 309 segments, with multi-sourced, cross-verified mobile and sensor data. The average road here carries 3,360 vehicles a day, 29% less than the Alaska average of 4,749. 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 Kodiak Island, Alaska

Traffic

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

vehicles per day3,360
Trucks

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

6.7%
Average travel time

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

34.1 min
Congestion ratio

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

10.8%
Drivers’ average age

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

41.2 yrs
Drivers’ average income

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

$85,336

A typical monitored road in Kodiak Island, Alaska sees 3,360 vehicles per day, while its 40 miles of monitored roads together handle 85,976 vehicle-miles traveled per day (≈31.4 million per year). About 1 in 15 vehicles is a truck, in line with Alaska (6.7%).

Traffic 29% below the Alaska average

Kodiak Island's average daily traffic volume is 29% lower than the state average - 3,360 vehicles per day against 4,749 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. Across the whole network, that travel is about 0.8% of Alaska's statewide total. By volume, Kodiak Island's 3,360 vehicles per day outpaces 61% of counties in Alaska.

The average trip takes 34.1 minutes, on par with the state level. Its average travel time of 34.1 minutes is longer than 50% of counties in Alaska.

At 27% lower than the state level, the 10.8% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Kodiak Island, Alaska, the peak hour concentrates about 9% of the day's traffic.

Kodiak Island vs. Alaska Traffic Comparison

Kodiak Island's biggest difference from the Alaska average is its average daily traffic per road, 29% below it. The other measures stay close to the average.

MetricKodiak IslandAlaska averageDifference
Traffic3,3604,749-29.3%
Truck % (Total Traffic)6.7%6.7%-1.3%
Avg. Travel Time34.1 min34.0 min+0.4%

How Kodiak Island compares

Kodiak Island moves the least traffic of its nearby boroughs and census areas

Set against the average of the 4 areas nearest to it, Kodiak Island moves 4.3% of the total daily travel; it has the fourth busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Kodiak Island and the 4 nearest county-level areas by centroid distance, with the Alaska average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Kodiak Island3,3606.7%85,97634.1 min10.8%
Kenai Peninsula, Alaska4,2558.5%1,283,99539.2 min13.4%
Anchorage, Alaska7,5125.0%4,219,06733.5 min21.1%
Matanuska-Susitna, Alaska4,0587.0%2,270,46031.2 min12.9%
Valdez-Cordova, Alaska1,37611.3%213,79935.5 min5.3%
Alaska average4,7496.7%N/A34.0 min14.9%

Kodiak Island ranked within Alaska

Kodiak Island sits in the bottom quarter of the Alaska field on average driver age, at #16 of 19.

Kodiak Island ranked among 19 county-level areas in Alaska (1 = highest).
MeasureKodiak IslandAlaska rank
Traffic volume (AADT)3,360#8 of 19
Average travel time34.1 min#10 of 19
Average driver income$85,336#10 of 19
Average driver age41.2 yrs#16 of 19

Busiest roads in Kodiak Island, Alaska

The three busiest roads in Kodiak Island average 5,618 vehicles a day, 67% more than the county average of 3,360 across all its monitored roads.

Mill Bay Road is the busiest road, at 6,560 vehicles a day, 271 of them trucks (4.1%). Lower Mill Bay Road carries the most trucks, 324 a day (5.7% of its traffic), although it ranks #2 for all traffic.

Chiniak Highway skews younger: its drivers' median age is 33.7, compared with 41.2 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Mill Bay RoadSecondary road · 6,560vehicles271trucks · 4.1%
Road class
Secondary road
Congestion ratio
15.8%
Median trip time
32.7 min
Drivers’ median age
41.2 yrs
Drivers’ average income
$81,807

The busiest stretch of Mill Bay Road carries 2.0 times the county average; trucks are 4.1% of it, below the county-wide 6.7%.

2Lower Mill Bay RoadSecondary road · 5,656vehicles324trucks · 5.7%
Road class
Secondary road
Congestion ratio
13.1%
Median trip time
33.8 min
Drivers’ median age
41.2 yrs
Drivers’ average income
$82,665

Lower Mill Bay Road is busy by local standards, at 68% more than the county average on its busiest stretch; trucks are 5.7% of it, below the county-wide 6.7%.

3Rezanof DrivePrimary road · 4,637vehicles266trucks · 5.7%
Road class
Primary road
Congestion ratio
11.8%
Median trip time
40.1 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$86,075

Rezanof Drive peaks at 4,637 vehicles a day, 38% more than the county average; trucks are 5.7% of it, below the county-wide 6.7%.

4Chiniak HighwayPrimary road · 965vehicles94trucks · 9.8%
Road class
Primary road
Congestion ratio
2.9%
Median trip time
36.8 min
Drivers’ median age
33.7 yrs
Drivers’ average income
$92,364

Even at its busiest, Chiniak Highway carries 71% less than the county average; trucks are 9.8% of it, above the county-wide 6.7%.

5Dog Bay RoadSecondary road · 843vehicles42trucks · 5.0%
Road class
Secondary road
Median trip time
39.1 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$78,282

Dog Bay Road is a quieter road: its busiest stretch carries 75% less than the county average; trucks are 5.0% of it, below the county-wide 6.7%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Lower Mill Bay RoadSecondary road · #2 by traffic5,656vehicles324trucks · 5.7%
2Mill Bay RoadSecondary road · #1 by traffic6,560vehicles271trucks · 4.1%
3Rezanof DrivePrimary road · #3 by traffic4,637vehicles266trucks · 5.7%
4Chiniak HighwayPrimary road · #4 by traffic965vehicles94trucks · 9.8%
5Dog Bay RoadSecondary road · #5 by traffic843vehicles42trucks · 5.0%
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

Kodiak IslandDepartment 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 Kodiak Island

The same traffic breakdown for the areas closest to Kodiak Island, Alaska.

Need segment-level traffic data?

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