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San Joaquin County, California Traffic Counts

This page delivers traffic analytics for San Joaquin County, California. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for San Joaquin County, California among 1,624 road miles divided in 32,051 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 267 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.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

8,641

Trucks

11.7%

Average travel time

32.8 min

Congestion ratio

23.3%

Drivers’ average age

43.0 yrs

Drivers’ average income

$106,425

Our data indicates an estimated average traffic volume of 8,641 vehicles per day in San Joaquin County, California that results in 20,111,410 vehicle-miles traveled per day (≈7.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 9 vehicles. Typical time spent behind the wheel per trip is 32.8 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the California state averages: At 8,641 vehicles per day, the average monitored road in San Joaquin carries 32% less traffic than the state average of 12,766 vehicles per day - a critical factor for logistics and site planning. Across the whole network that adds up to 20,111,410 vehicle-miles traveled per day (≈7.3 billion per year), roughly 2.2% of California's statewide total. The average trip takes 32.8 minutes, 5% lower than the state level. Congestion runs 15% lower than the state level, at a ratio of 23.3% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, San Joaquin's 8,641 vehicles per day outpaces 63% of counties in California. 35% of counties in California have a shorter average travel time than San Joaquin's 32.8 minutes.

Highway vs. Non-Highway Traffic Analysis

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Highway Traffic

Traffic

36,604

Trucks

16.0%

Average travel time

45.8 min

Congestion ratio

65.6%

Drivers’ average age

43.1 yrs

Drivers’ average income

$109,779

A significant volume of traffic in San Joaquin County, California utilizes the highway network. The average highway carries 36,604 vehicles per day, 379% more than the average non-highway road in the same area, which carries 7,636 vehicles per day. That average covers 309 highway road miles divided in 1,112 segments (average segment length 1,468 ft), together carrying 11,412,144 vehicle-miles traveled per day (≈4.2 billion per year). 80% of counties in California move less traffic on their highways. Trucks constitute 16.0% of highway traffic.

Analytical insight

At 16.0%, highway truck share is 55% higher than the state average, marking San Joaquin as a significant freight corridor - underscoring the importance of highway access for logistics operators. San Joaquin's highway truck share (16.0%) is higher than 73% of counties in California. San Joaquin's highway truck count is higher than 98% of counties in California, at roughly 5,871 trucks per day.
non-highway traffic icon

Non-highway traffic

Traffic

7,636

Trucks

5.9%

Average travel time

32.4 min

Congestion ratio

21.8%

Drivers’ average age

42.9 yrs

Drivers’ average income

$103,645

The non-highway road network in San Joaquin County, California supports a substantial volume of traffic. The average non-highway road carries 7,636 vehicles per day, 79% less than the average highway in the same area, which carries 36,604 vehicles per day. That average covers 1,314 non-highway road miles divided in 30,939 segments (average segment length 224 ft), together carrying 8,699,267 vehicle-miles traveled per day (≈3.2 billion per year). Trucks constitute 5.9% of non-highway traffic.

Analytical insight

Compared to highways, non-highway routes see 63% fewer trucks by share. At 18% lower than the state level, the non-highway congestion ratio of 21.8% signals easier movement on local roads. Overall, average travel time here is longer than 35% of counties in California. San Joaquin's average driver income exceeds 70% of counties in California. 25% of counties in California have a younger driver population than San Joaquin.

Time-of-Day & Seasonal Patterns

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Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 3:00 PM–9:00 PM, with volumes reaching approximately 68% higher than the daily average.
Weekend traffic:
Weekend volumes run about 20% below weekday levels.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +5% versus the annual average.
Lowest month:
January is the quietest month, with volumes -12% versus the annual average.

Analytical insight

In San Joaquin County, California, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +5% in high season.

Traffic Flow Profile Comparison

Metric

San Joaquin

California
Average

Difference

Traffic

8,641

12,766

-32.3%

Truck % (Total Traffic)

11.7%

7.8%

+49.9%

Truck % (Highway)

16.0%

10.4%

+54.5%

Avg. Travel Time

32.8 min

34.5 min

-4.8%

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

CaliforniaDepartment of Transportation

Historical traffic pattern databases

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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