This page delivers traffic analytics for Marin County, California. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Marin County, California among 401 road miles divided in 8,387 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 253 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
9,822
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.2 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
27.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.0 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$147,642
Our data indicates an estimated average traffic volume of 9,822 vehicles per day in Marin County, California that results in 5,877,928 vehicle-miles traveled per day (≈2.1 billion per year). The traffic stream is comprised of an average of 1 truck for every 15 vehicles. Typical time spent behind the wheel per trip is 31.2 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the California state averages: Marin sees 23% lower average daily traffic volume than the state average (9,822 vehicles per day against 12,766), suggesting less demand on each road - a critical factor for logistics and site planning. Network-wide, Marin accounts for about 0.6% of California's statewide total, at 5,877,928 vehicle-miles traveled per day (≈2.1 billion per year). Journey times run 10% lower than the state level, at 31.2 minutes on average. Congestion runs 1% higher than the state level, at a ratio of 27.8% - more pronounced congestion - crucial for traffic control improvement and logistics planning. Marin carries more traffic than 74% of counties in California. 11% of counties in California have a shorter average travel time than Marin's 31.2 minutes.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
54,659
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
39.6 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
67.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
50.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$140,613
A significant volume of traffic in Marin County, California utilizes the highway network. The average highway carries 54,659 vehicles per day, 565% more than the average non-highway road in the same area, which carries 8,222 vehicles per day. That average covers 74 highway road miles divided in 289 segments (average segment length 1,356 ft), together carrying 4,045,356 vehicle-miles traveled per day (≈1.5 billion per year). By highway travel volume, Marin outranks 53% of counties in California. Trucks constitute 8.1% of highway traffic.
Analytical insight
The concentration of trucks on highways (8.1%) is 22% lower than the state average for similar road classifications. This indicates Marin serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. By truck concentration, highways here outrank 22% of counties in California. Marin's highway truck count is higher than 78% of counties in California, at roughly 4,427 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
8,222
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
3.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
30.9 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
26.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.9 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$159,681
The non-highway road network in Marin County, California supports a substantial volume of traffic. The average non-highway road carries 8,222 vehicles per day, 85% less than the average highway in the same area, which carries 54,659 vehicles per day. That average covers 327 non-highway road miles divided in 8,098 segments (average segment length 213 ft), together carrying 1,832,572 vehicle-miles traveled per day (≈669 million per year). Trucks constitute 3.8% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 53% lower than the highway network. The non-highway congestion ratio of 26.4% is in line with the state level. Overall, average travel time here is longer than 11% of counties in California. Marin's average driver income exceeds 96% of counties in California. Marin's median driver age is higher than 82% of counties in California.
Time-of-Day & Seasonal Patterns
Analytical insight
In Marin County, California, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
Marin
California
Average
Difference
Traffic
9,822
12,766
-23.1%
Truck % (Total Traffic)
6.8%
7.8%
-13.0%
Truck % (Highway)
8.1%
10.4%
-22.0%
Avg. Travel Time
31.2 min
34.5 min
-9.6%
Frequently Asked Questions
The average daily traffic volume is calculated at 9,822 vehicles per day, providing a baseline for daily operations and site assessment.
Marin carries more traffic than 74% of counties in California, averaging 9,822 vehicles per day.
Weekday peaks occur between 8:00 AM and 9:00 AM in the morning and between 2:00 PM and 5:00 PM in the evening - about 80% above the daily average.
Trucks account for approximately 6.8% of the total traffic mix across all road types, with a significantly higher concentration of 8.1% on highways.
Approximately 22% of highway traffic and 1% of non-highway traffic consists of vehicles whose trip originates outside Marin County, California. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
The average travel time for drivers is 31.2 minutes, offering a standard metric for commute and delivery route planning.
Drivers on Marin roads have a median age of 51 years, and the median household income of the neighborhoods trips originate from averages $147,642 - useful context for retail siting and customer profiling.
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)
