This page delivers traffic analytics for San Francisco County, California. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for San Francisco County, California among 381 road miles divided in 12,792 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 157 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.
16,744
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
37.1 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.
41.9%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
43.0 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$143,694
Our data indicates an estimated average traffic volume of 16,744 vehicles per day in San Francisco County, California that results in 8,179,874 vehicle-miles traveled per day (≈3.0 billion per year). The traffic stream is comprised of an average of 1 truck for every 21 vehicles. Typical time spent behind the wheel per trip is 37.1 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the California state averages: San Francisco sees 31% higher average daily traffic volume than the state average (16,744 vehicles per day against 12,766), suggesting more demand on each road - a critical factor for logistics and site planning. Network-wide, San Francisco accounts for about 0.9% of California's statewide total, at 8,179,874 vehicle-miles traveled per day (≈3.0 billion per year). At 37.1 minutes, the average travel time is 8% higher than the state level. The congestion ratio of 41.9% is 53% higher, pointing to more pronounced congestion than the state level - crucial for traffic control improvement and logistics planning. San Francisco carries more traffic than 98% of counties in California. On travel time, San Francisco runs longer than 81% of counties in California.
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.
45,753
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
37.9 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.
79.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
44.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$140,912
A significant volume of traffic in San Francisco County, California utilizes the highway network. The average highway carries 45,753 vehicles per day, 198% more than the average non-highway road in the same area, which carries 15,349 vehicles per day. That average covers 54 highway road miles divided in 587 segments (average segment length 489 ft), together carrying 3,367,873 vehicle-miles traveled per day (≈1.2 billion per year). Trucks constitute 5.5% of highway traffic.
Analytical insight
At 5.5%, highway truck share is 47% lower than the state average, marking San Francisco as a primarily local traffic hub - underscoring the importance of local access for logistics operators. San Francisco also posts the lowest highway truck share in California - 5.5%. San Francisco's highway truck count is higher than 61% of counties in California, at roughly 2,535 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
15,349
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.3%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
37.1 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.
40.1%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
42.2 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$145,217
The non-highway road network in San Francisco County, California supports a substantial volume of traffic. The average non-highway road carries 15,349 vehicles per day, 66% less than the average highway in the same area, which carries 45,753 vehicles per day. That average covers 327 non-highway road miles divided in 12,205 segments (average segment length 141 ft), together carrying 4,812,001 vehicle-miles traveled per day (≈1.8 billion per year). Trucks constitute 4.3% of non-highway traffic.
Analytical insight
Compared to highways, non-highway routes see 23% fewer trucks by share. Non-highway congestion (40.1%) runs 51% higher than the state average, pointing to slower local traffic flow. 81% of counties in California see shorter overall travel times than San Francisco. 93% of counties in California see lower average driver income among trip origins than San Francisco. San Francisco's median driver age is higher than 26% of counties in California.
Time-of-Day & Seasonal Patterns
Analytical insight
In San Francisco County, California, the peak hour concentrates about 6% of the day's traffic.
Traffic Flow Profile Comparison
Metric
San Francisco
California
Average
Difference
Traffic
16,744
12,766
+31.2%
Truck % (Total Traffic)
4.8%
7.8%
-38.2%
Truck % (Highway)
5.5%
10.4%
-46.6%
Avg. Travel Time
37.1 min
34.5 min
+7.7%
Frequently Asked Questions
The average daily traffic volume is calculated at 16,744 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - San Francisco has the lowest highway truck share of any county in California, at 5.5%.
Approximately 36% of highway traffic and 10% of non-highway traffic consists of vehicles whose trip originates outside San Francisco 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 37.1 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 8:00 AM and 10:00 AM in the morning and between 3:00 PM and 11:00 PM in the evening - about 42% above the daily average.
Trucks account for approximately 4.8% of the total traffic mix across all road types, with a significantly higher concentration of 5.5% on highways.
Drivers on San Francisco roads have a median age of 43 years, and the median household income of the neighborhoods trips originate from averages $143,694 - 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)
