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Traffic heat map of Mendocino County, California: 533 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and Redwood Highway

Mendocino County, California Traffic Counts

TrafficZoom tracks traffic on 533 road miles in Mendocino County, California, divided into 6,271 segments averaging 448 ft. Its busiest road, Main Street, carries 50,687 vehicles a day, 6.9 times the average road. 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 Mendocino County, California

Traffic

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

vehicles per day7,304
Trucks

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

8.3%
Average travel time

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

32.1 min
Congestion ratio

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

15.7%
Drivers’ average age

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

49.3 yrs
Drivers’ average income

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

$70,007

Our data shows 7,304 vehicles per day on the average road in Mendocino County, California, and 2,422,662 vehicle-miles traveled per day (≈884 million per year) across its 533 miles of monitored roads. Trucks are 8.3% of traffic, close to the 7.8% across California.

Shorter trips than 81% of counties in California

At 7,304 vehicles per day, the average monitored road in Mendocino carries 43% less traffic than the state average of 12,766, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of California's statewide total of vehicle-miles. Mendocino carries more traffic than 58% of counties in California.

At 32.1 minutes, the average travel time is 7% lower than the state level. Its average travel time of 32.1 minutes is shorter than 81% of counties in California.

At 43% lower than the state level, the 15.7% 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 Mendocino County, California

Trafficvehicles per day8,349
Trucks10.2%
Average travel time43.7 min
Congestion ratio20.3%
Drivers’ average age48.0 yrs
Drivers’ average income$71,615

Highways carry about half of all travel in Mendocino County, California, 52% of vehicle-miles. The average highway carries 8,349 vehicles per day, 17% more than the average non-highway road in the same area, which carries 7,139 vehicles per day.

Highways make up 28% of the monitored road miles (149 miles, 855 segments), so they carry more than their share: 1,267,275 vehicle-miles traveled per day (≈463 million per year).

Fewer highway trucks than 84% of counties in California

Highway truck concentration here (10.2%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for California: neither freight- nor commuter-dominated.

57% of counties in California see a higher highway truck share than Mendocino's 10.2%. 84% of counties in California see more highway trucks per day than Mendocino's roughly 853.

non-highway traffic icon

Non-highway Traffic in Mendocino County, California

Trafficvehicles per day7,139
Trucks6.2%
Average travel time30.3 min
Congestion ratio15.0%
Drivers’ average age49.6 yrs
Drivers’ average income$68,674

Local roads carry about half of all travel in Mendocino County, California, 48% of vehicle-miles. A typical local road sees 7,139 vehicles per day.

Local roads make up 72% of the monitored road miles (384 miles in 5,416 segments) but carry less than their share of travel: 1,155,386 vehicle-miles traveled per day (≈422 million per year). The truck share on non-highway roads is 6.2%.

Drivers from lower-income areas than 86% of counties in California

Non-highway roads carry a truck concentration that's 39% lower than the highway network.

The non-highway congestion ratio of 15.0% is 44% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 86% of counties in California. 74% of counties in California have a younger driver population than Mendocino.

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 1:00 PM to 8:00 PM, with volumes reaching approximately 75% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +14% versus the annual average.
Lowest month:
January is the quietest month, with volumes -29% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Mendocino County, California, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +14% in high season.

Mendocino County vs. California Traffic Comparison

The average daily traffic per road sets Mendocino County apart: 43% below the California average.

MetricMendocino CountyCalifornia averageDifference
Traffic7,30412,766-42.8%
Truck % (Total Traffic)8.3%7.8%+6.7%
Truck % (Highway)10.2%10.4%-1.5%
Avg. Travel Time32.1 min34.5 min-6.8%

How Mendocino County compares

Mendocino County against nearby counties

Set against the average of the 4 areas nearest to it, Mendocino County runs 5.3 percentage points less truck traffic; 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.

Mendocino 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
Mendocino County7,3048.3%2,422,66232.1 min15.7%
Lake County, California6,1597.4%1,447,76638.4 min19.1%
Glenn County, California2,80319.2%1,075,54233.3 min11.7%
Sonoma County, California10,6676.5%10,645,61432.4 min28.9%
Colusa County, California3,19121.1%1,487,58839.5 min10.1%
California average12,7667.8%N/A34.5 min27.4%

Mendocino County ranked within California

Mendocino County sits in the bottom quarter of the California field on average driver income, at #50 of 58.

Mendocino County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureMendocino CountyCalifornia rank
Traffic volume (AADT)7,304#25 of 58
Highway vehicle-miles per day1,267,275#38 of 52
Truck share on highways10.2%#30 of 52
Highway trucks per day853#44 of 52
Average travel time32.1 min#47 of 58
Average driver income$70,007#50 of 58
Average driver age49.3 yrs#16 of 58

Busiest roads in Mendocino County, California

The three busiest roads in Mendocino County average 32,707 vehicles a day, 4.5 times the county average of 7,304 across all its monitored roads.

Main Street is the busiest road, at 50,687 vehicles a day, 1,594 of them trucks (3.1%). That is 95% more than the next road, Redwood Highway (25,996). Redwood Highway carries the most trucks, 2,456 a day (9.4% of its traffic), although it ranks #2 for all traffic.

Trips using Orchard Avenue are long: a median of 49.2 minutes against 32.1 county-wide, the mark of a through route.

Few trucks use Main Street: 3.1% of its traffic, under half the county's 8.3%.

Drivers on Main Street are noticeably older, with a median age of 57.6 against 49.3 across the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetPrimary road · 50,687vehicles1,594trucks · 3.1%
Road class
Primary road
Median trip time
27.2 min
Drivers’ median age
57.6 yrs
Drivers’ average income
$50,498

Main Street carries 6.9 times the county average at its busiest, 1,594 of them trucks (3.1%, below the county-wide 8.3%).

2Redwood HighwayMotorway · 25,996vehicles2,456trucks · 9.4%
Road class
Motorway
Congestion ratio
31.6%
Median trip time
36.0 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$71,249

Redwood Highway carries 3.6 times the county average at its busiest, 2,456 of them trucks (9.4%, above the county-wide 8.3%).

3Orchard AvenueTertiary road · 21,438vehicles871trucks · 4.1%
Road class
Tertiary road
Congestion ratio
52.1%
Median trip time
49.2 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$67,260

Delays build on Orchard Avenue: its congestion ratio of 52% over free-flow time is well above the county's 16%.

4Daniel Broeske Memorial HighwayMotorway · 16,461vehicles2,045trucks · 12.4%
Road class
Motorway
Congestion ratio
25.7%
Median trip time
33.2 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$68,481

Daniel Broeske Memorial Highway carries 2.3 times the county average on its busiest stretch, where the median trip lasts 33.2 minutes.

5Perkins StreetSecondary road · 16,267vehicles749trucks · 4.6%
Road class
Secondary road
Congestion ratio
38.7%
Median trip time
30.1 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$74,605

Travel on Perkins Street's busiest stretch runs 39% over free-flow time, against 16% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Redwood HighwayMotorway · #2 by traffic25,996vehicles2,456trucks · 9.4%
2Daniel Broeske Memorial HighwayMotorway · #4 by traffic16,461vehicles2,045trucks · 12.4%
3Main StreetPrimary road · #1 by traffic50,687vehicles1,594trucks · 3.1%
4Willits BypassTrunk road · 13,154vehicles1,420trucks · 10.8%
Road class
Trunk road
Median trip time
40.2 min
Drivers’ median age
51.9 yrs
Drivers’ average income
$87,439

Willits Bypass carries 80% more than the county average at its busiest, 1,420 of them trucks (10.8%, above the county-wide 8.3%).

5CA 20Trunk road · 9,285vehicles1,094trucks · 11.8%
Road class
Trunk road
Congestion ratio
15.3%
Median trip time
41.2 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$71,027

CA 20 carries 27% more than the county average on its busiest stretch, where the median trip lasts 41.2 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

MendocinoDepartment 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 Mendocino County

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

Need segment-level traffic data?

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