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Traffic heat map of Orange County, California: 3,284 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Costa Mesa Freeway

Orange County, California Traffic Counts

TrafficZoom tracks traffic on 3,284 road miles in Orange County, California, divided into 109,906 segments averaging 158 ft. It ranks among the top 3 counties in California for average daily traffic. 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 icon

Total Traffic Volume & Performance in Orange County, California

Traffic

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

vehicles per day15,435
Trucks

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

4.9%
Average travel time

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

33.5 min
Congestion ratio

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

28.1%
Drivers’ average age

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

43.1 yrs
Drivers’ average income

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

$131,074

Our data shows 15,435 vehicles per day on the average road in Orange County, California, and 68,602,703 vehicle-miles traveled per day (≈25.0 billion per year) across its 3,284 miles of monitored roads. About 1 in 20 vehicles is a truck, fewer than the 1 in 13 across California.

Busier roads than 96% of counties in California

Orange's average daily traffic volume is 21% higher than the state average - 15,435 vehicles per day against 12,766 - suggesting more traffic load per road - a critical factor for logistics and site planning. Across the whole network, that travel is about 7.4% of California's statewide total. By volume, Orange's 15,435 vehicles per day outpaces 96% of counties in California.

At 33.5 minutes, the average travel time matches the state level closely. On travel time, Orange runs shorter than 51% of counties in California.

The congestion ratio of 28.1% is in line with the state level.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Orange County, California

Trafficvehicles per day62,949
Trucks6.2%
Average travel time39.0 min
Congestion ratio68.2%
Drivers’ average age42.6 yrs
Drivers’ average income$128,706

Highways carry about half of all travel in Orange County, California, 47% of vehicle-miles. The average highway carries 62,949 vehicles per day, 345% more than the average non-highway road in the same area, which carries 14,132 vehicles per day.

That comes from just 16% of the monitored road miles: 509 miles in 2,935 segments, carrying 32,138,667 vehicle-miles traveled per day (≈11.7 billion per year).

No more than 4 other counties in California move more traffic on their highways.

Lower highway truck share than 98% of counties in California

The concentration of trucks on highways (6.2%) is 40% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 98% of counties in California. By raw truck volume, Orange carries more highway trucks than 73% of counties in California.

non-highway traffic icon

Non-highway Traffic in Orange County, California

Trafficvehicles per day14,132
Trucks3.7%
Average travel time33.4 min
Congestion ratio27.0%
Drivers’ average age43.6 yrs
Drivers’ average income$132,559

Local roads carry about half of all travel in Orange County, California, 53% of vehicle-miles. On the average non-highway road, that comes to 14,132 vehicles per day.

Spread over 2,774 miles and 106,971 segments, 84% of the road network, local roads carry a lighter load per mile: 36,464,036 vehicle-miles traveled per day (≈13.3 billion per year). The truck share on non-highway roads is 3.7%.

Drivers from higher-income areas than 89% of counties in California

Compared to highways, non-highway routes see 40% fewer trucks by share.

Non-highway congestion here (27.0%) closely tracks the state average.

89% of counties in California see lower average driver income among trip origins than Orange. The driver population here skews younger than 72% of counties in California.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 9:00 PM, with volumes reaching approximately 71% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-3%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +12% versus the annual average.
Lowest month:
January is the quietest month, with volumes -23% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Orange County, California, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +12% in high season.

Orange County vs. California Traffic Comparison

Orange County's biggest difference from the California average is its highway truck share, 40% below it. Its truck share is also 37% below.

MetricOrange CountyCalifornia averageDifference
Traffic15,43512,766+20.9%
Truck % (Total Traffic)4.9%7.8%-36.7%
Truck % (Highway)6.2%10.4%-39.8%
Avg. Travel Time33.5 min34.5 min-2.9%

How Orange County compares

Orange County has the lowest truck share of its nearby counties

Orange County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the second busiest roads of the five.

Orange 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
Orange County15,4354.9%68,602,70333.5 min28.1%
Los Angeles County, California19,0006.0%204,530,09437.1 min33.4%
San Diego County, California14,3115.5%85,105,40630.0 min31.4%
Ventura County, California10,6966.1%16,797,31832.9 min29.9%
Riverside County, California12,8818.5%71,474,67334.5 min29.2%
California average12,7667.8%N/A34.5 min27.4%

Orange County ranked within California

Orange County sits in California's top three on average daily traffic volume.

Orange County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureOrange CountyCalifornia rank
Traffic volume (AADT)15,435#3 of 58
Highway vehicle-miles per day32,138,667#5 of 52
Truck share on highways6.2%#51 of 52
Highway trucks per day3,934#15 of 52
Average travel time33.5 min#30 of 58
Average driver income$131,074#7 of 58
Average driver age43.1 yrs#42 of 58

Orange County ranks #5 of 52 on highway travel volume but #51 of 52 on truck share on highways. It carries some of the heaviest highway traffic in California, but very little of it is freight - this is commuter and local car volume, not through-trucking.

Busiest roads in Orange County, California

On their busiest stretches, the three busiest roads in Orange County carry 206,888 vehicles a day on average, 13.4 times the typical road in the county (15,435).

Costa Mesa Freeway leads with 217,543 vehicles a day, 11,872 of them trucks (5.5%). Riverside Freeway is practically level with it at 212,045. Riverside Freeway carries the most trucks, 16,068 a day (7.6% of its traffic), although it ranks #2 for all traffic.

Riverside Freeway carries longer journeys than most roads here, with a median trip of 44.0 minutes against 33.5 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Costa Mesa FreewayMotorway · 217,543vehicles11,872trucks · 5.5%
Road class
Motorway
Congestion ratio
104.2%
Median trip time
35.3 min
Drivers’ median age
42.6 yrs
Drivers’ average income
$129,600

Delays build on Costa Mesa Freeway: its congestion ratio of 104% over free-flow time is well above the county's 28%.

2Riverside FreewayMotorway · 212,045vehicles16,068trucks · 7.6%
Road class
Motorway
Congestion ratio
98.1%
Median trip time
44.0 min
Drivers’ median age
42.5 yrs
Drivers’ average income
$123,536

Travel on Riverside Freeway's busiest stretch runs 98% over free-flow time, against 28% across the county, so expect slower peak hours.

3San Diego FreewayMotorway · 191,077vehicles11,961trucks · 6.3%
Road class
Motorway
Congestion ratio
80.8%
Median trip time
39.6 min
Drivers’ median age
43.3 yrs
Drivers’ average income
$135,613

A main artery: San Diego Freeway's busiest stretch carries 12.4 times the county average; trucks are 6.3% of it, above the county-wide 4.9%.

4Orange FreewayMotorway · 174,157vehicles11,609trucks · 6.7%
Road class
Motorway
Congestion ratio
74.1%
Median trip time
39.5 min
Drivers’ median age
42.7 yrs
Drivers’ average income
$112,840

Orange Freeway is a trunk route for the county, carrying 11.3 times the county average on its busiest stretch; trucks are 6.7% of it, above the county-wide 4.9%.

5Garden Grove FreewayMotorway · 170,926vehicles8,149trucks · 4.8%
Road class
Motorway
Congestion ratio
90.9%
Median trip time
38.7 min
Drivers’ median age
43.0 yrs
Drivers’ average income
$109,019

Garden Grove Freeway carries 11.1 times the county average at its busiest, 8,149 of them trucks (4.8%, in line with the county-wide 4.9%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1Riverside FreewayMotorway · #2 by traffic212,045vehicles16,068trucks · 7.6%
2Artesia FreewayMotorway · 167,334vehicles12,443trucks · 7.4%
Road class
Motorway
Congestion ratio
85.7%
Median trip time
41.4 min
Drivers’ median age
42.5 yrs
Drivers’ average income
$114,508

Artesia Freeway carries 10.8 times the county average on its busiest stretch, where the median trip lasts 41.4 minutes.

3San Diego FreewayMotorway · #3 by traffic191,077vehicles11,961trucks · 6.3%
4Costa Mesa FreewayMotorway · #1 by traffic217,543vehicles11,872trucks · 5.5%
5Orange FreewayMotorway · #4 by traffic174,157vehicles11,609trucks · 6.7%
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

OrangeDepartment 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 Orange County

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

Need segment-level traffic data?

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