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Traffic heat map of Humboldt County, California: 608 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Redwood Highway

Humboldt County, California Traffic Counts

Our Humboldt County, California traffic data covers 9,086 road segments over 608 road miles, with an average segment of just 353 ft. Its busiest road, Redwood Highway, carries 34,375 vehicles a day, 6.3 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Humboldt County, California

Traffic

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

vehicles per day5,453
Trucks

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

8.0%
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.

15.1%
Drivers’ average age

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

44.1 yrs
Drivers’ average income

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

$67,048

The average monitored road in Humboldt County, California carries 5,453 vehicles per day. Across its 608 miles of monitored roads, that adds up to 3,124,521 vehicle-miles traveled per day (≈1.1 billion per year). Trucks are 8.0% of traffic, close to the 7.8% across California.

Traffic 57% below the California average

At 5,453 vehicles per day, the average monitored road in Humboldt carries 57% less traffic than the state average of 12,766, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of California's statewide total of vehicle-miles. By volume, Humboldt's 5,453 vehicles per day trails 65% of counties in California.

The average trip takes 34.1 minutes, on par with the state level. On travel time, Humboldt runs longer than 56% of counties in California.

At 45% lower than the state level, the 15.1% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Humboldt County, California

Trafficvehicles per day11,759
Trucks8.7%
Average travel time38.5 min
Congestion ratio21.2%
Drivers’ average age44.1 yrs
Drivers’ average income$65,246

A little more than half of the driving in Humboldt County, California happens on highways: 67% of all vehicle-miles. The average highway carries 11,759 vehicles per day, 182% more than the average non-highway road in the same area, which carries 4,168 vehicles per day.

With 41% of the road miles (252 miles in 1,538 segments), highways punch above their length, carrying 2,089,775 vehicle-miles traveled per day (≈763 million per year).

Fewer highway trucks than 86% of counties in California

Highway truck concentration here runs 16% lower than the state average, at 8.7%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Humboldt's highway truck share (8.7%) is lower than 69% of counties in California. 86% of counties in California see more highway trucks per day than Humboldt's roughly 1,021.

non-highway traffic icon

Non-highway Traffic in Humboldt County, California

Trafficvehicles per day4,168
Trucks6.6%
Average travel time33.2 min
Congestion ratio13.9%
Drivers’ average age44.1 yrs
Drivers’ average income$69,233

Local roads carry a significant share of travel in Humboldt County, California: 33% of all vehicle-miles. A typical local road sees 4,168 vehicles per day.

Local roads make up 59% of the monitored road miles (356 miles in 7,548 segments) but carry less than their share of travel: 1,034,747 vehicle-miles traveled per day (≈378 million per year). Trucks make up 6.6% of non-highway traffic, about 1 in 15 vehicles.

Drivers from lower-income areas than 93% of counties in California

Non-highway roads carry a truck concentration that's 24% lower than the highway network.

Non-highway congestion (13.9%) runs 48% lower than the state average, pointing to smoother local traffic flow.

93% of counties in California see higher average driver income among trip origins than Humboldt. The driver population here skews younger than 56% of counties in California.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 8:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 87% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 20% below weekday levels, the usual weekend dip.
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 -12% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Humboldt County, California, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +10% in high season.

Humboldt County vs. California Traffic Comparison

Humboldt County's biggest difference from the California average is its average daily traffic per road, 57% below it. Its highway truck share is also 16% below.

MetricHumboldt CountyCalifornia averageDifference
Traffic5,45312,766-57.3%
Truck % (Total Traffic)8.0%7.8%+3.0%
Truck % (Highway)8.7%10.4%-16.4%
Avg. Travel Time34.1 min34.5 min-1.2%

How Humboldt County compares

Humboldt County moves more traffic than any nearby county

Against the 4 nearest areas, Humboldt County runs 7.8 percentage points less truck traffic and is 46.9% more congested; it has the second busiest roads of the five. The extra traffic here is local and light - trucks make up less of it than anywhere immediately around it.

Humboldt County and the 4 nearest county-level areas by centroid distance, with the California average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Humboldt County5,4538.0%3,124,52134.1 min15.1%
Trinity County, California2,09224.1%206,15349.0 min5.7%
Del Norte County, California4,4959.2%453,96829.6 min11.1%
Siskiyou County, California2,78421.7%2,457,29538.3 min8.7%
Mendocino County, California7,3048.3%2,422,66232.1 min15.7%
California average12,7667.8%N/A34.5 min27.4%

Humboldt County ranked within California

Humboldt County sits in the bottom quarter of the California field on average driver income, at #54 of 58.

Humboldt County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureHumboldt CountyCalifornia rank
Traffic volume (AADT)5,453#38 of 58
Highway vehicle-miles per day2,089,775#32 of 52
Truck share on highways8.7%#36 of 52
Highway trucks per day1,021#45 of 52
Average travel time34.1 min#26 of 58
Average driver income$67,048#54 of 58
Average driver age44.1 yrs#33 of 58

Busiest roads in Humboldt County, California

Traffic concentrates on a few corridors: the three busiest roads average 29,264 vehicles a day, against 5,453 on the average road in Humboldt County.

Redwood Highway is the busiest road, at 34,375 vehicles a day, 1,890 of them trucks (5.5%).

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Redwood HighwayTrunk road · 34,375vehicles1,890trucks · 5.5%
Road class
Trunk road
Congestion ratio
37.9%
Median trip time
31.0 min
Drivers’ median age
43.3 yrs
Drivers’ average income
$62,489

Redwood Highway carries 6.3 times the county average on its busiest stretch, where the median trip lasts 31.0 minutes.

2Broadway StreetTrunk road · 30,707vehicles1,576trucks · 5.1%
Road class
Trunk road
Congestion ratio
43.2%
Median trip time
32.5 min
Drivers’ median age
44.4 yrs
Drivers’ average income
$67,740

Broadway Street is one of the more congested roads here: trips take 43% longer than at free-flow speed, against 15% county-wide.

3Fortuna BoulevardSecondary road · 22,710vehicles1,028trucks · 4.5%
Road class
Secondary road
Congestion ratio
44.1%
Median trip time
29.9 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$73,319

Delays build on Fortuna Boulevard: its congestion ratio of 44% over free-flow time is well above the county's 15%.

4Ross Hill RoadSecondary road · 16,520vehicles549trucks · 3.3%
Road class
Secondary road
Congestion ratio
29.3%
Median trip time
26.1 min
Drivers’ median age
47.6 yrs
Drivers’ average income
$77,298

Ross Hill Road carries 3.0 times the county average at its busiest, 549 of them trucks (3.3%, below the county-wide 8.0%).

55th StreetTrunk road · 15,310vehicles702trucks · 4.6%
Road class
Trunk road
Congestion ratio
32.2%
Median trip time
32.6 min
Drivers’ median age
43.5 yrs
Drivers’ average income
$59,825

5th Street carries 2.8 times the county average on its busiest stretch, where the median trip lasts 32.6 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

HumboldtDepartment 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 Humboldt County

The same traffic breakdown for the areas closest to Humboldt County, California.

Need segment-level traffic data?

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