Need segment-level traffic data?

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

Get insights →
Traffic heat map of Butte County, California: 722 miles of roads shaded from blue (light) to red (heavy traffic), busiest on CA 99 and Mangrove Avenue

Butte County, California Traffic Counts

Its busiest road, CA 99, carries 76,257 vehicles a day, 10.7 times the average road. This page breaks down traffic in Butte County, California across 722 miles of monitored roads split into 9,582 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
Find my place
total traffic icon

Total Traffic Volume & Performance in Butte County, California

Traffic

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

vehicles per day7,149
Trucks

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

6.9%
Average travel time

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

34.2 min
Congestion ratio

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

21.7%
Drivers’ average age

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

42.6 yrs
Drivers’ average income

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

$77,355

A typical monitored road in Butte County, California sees 7,149 vehicles per day, while its 722 miles of monitored roads together handle 3,985,329 vehicle-miles traveled per day (≈1.5 billion per year). Trucks are 6.9% of traffic, close to the 7.8% across California.

Traffic 44% below the California average

At 7,149 vehicles per day, the average monitored road in Butte carries 44% 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. Across the whole network, that travel is about 0.4% of California's statewide total. 56% of counties in California see less traffic than Butte's 7,149 vehicles per day.

Journey times here (34.2 minutes on average) closely track the state level. On travel time, Butte runs longer than 58% of counties in California.

At 21% lower than the state level, the 21.7% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Butte County, California

Trafficvehicles per day16,670
Trucks9.6%
Average travel time38.9 min
Congestion ratio32.9%
Drivers’ average age44.0 yrs
Drivers’ average income$78,620

Highways carry a significant share of travel in Butte County, California: 41% of all vehicle-miles. The average highway carries 16,670 vehicles per day, 162% more than the average non-highway road in the same area, which carries 6,373 vehicles per day.

With 15% of the road miles (107 miles in 722 segments), highways punch above their length, carrying 1,643,547 vehicle-miles traveled per day (≈600 million per year).

Fewer highway trucks than 76% of counties in California

At 9.6%, highway truck share is 8% lower than the state average. The highway traffic mix is typical for California: neither freight- nor commuter-dominated.

65% of counties in California see a higher highway truck share than Butte's 9.6%. Butte's highway truck count is lower than 76% of counties in California, at roughly 1,595 trucks per day.

non-highway traffic icon

Non-highway Traffic in Butte County, California

Trafficvehicles per day6,373
Trucks5.0%
Average travel time33.9 min
Congestion ratio20.8%
Drivers’ average age42.1 yrs
Drivers’ average income$76,699

A little more than half of the driving in Butte County, California happens on local roads: 59% of all vehicle-miles. The average non-highway road carries 6,373 vehicles per day.

Spread over 615 miles and 8,860 segments, 85% of the road network, local roads carry a lighter load per mile: 2,341,783 vehicle-miles traveled per day (≈855 million per year). About 1 in 20 vehicles on non-highway roads is a truck (5.0%).

Younger drivers than 81% of counties in California

The concentration of trucks on non-highway roads is 47% lower than on highways.

The non-highway congestion ratio of 20.8% is 21% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 72% of counties in California. 81% of counties in California have an older driver population than Butte.

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 8:00 PM, with volumes reaching approximately 75% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 19% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
August–October is the high season, with volumes +23% versus the annual average.
Lowest month:
January is the quietest month, with volumes -49% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Butte County, California, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +23% in high season.

Butte County vs. California Traffic Comparison

Butte County's biggest difference from the California average is its average daily traffic per road, 44% below it.

MetricButte CountyCalifornia averageDifference
Traffic7,14912,766-44.0%
Truck % (Total Traffic)6.9%7.8%-11.1%
Truck % (Highway)9.6%10.4%-7.8%
Avg. Travel Time34.2 min34.5 min-0.8%

How Butte County compares

Butte County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Butte County is 49.3% more congested and carries 64.5% more traffic on a typical road; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Butte 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
Butte County7,1496.9%3,985,32934.2 min21.7%
Yuba County, California5,8588.6%1,639,64933.0 min18.0%
Tehama County, California3,66216.2%1,770,11834.9 min12.8%
Nevada County, California5,05712.8%2,915,32232.3 min15.8%
Glenn County, California2,80319.2%1,075,54233.3 min11.7%
California average12,7667.8%N/A34.5 min27.4%

Butte County ranked within California

Butte County sits in the bottom quarter of the California field on average driver age, at #47 of 58.

Butte County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureButte CountyCalifornia rank
Traffic volume (AADT)7,149#26 of 58
Highway vehicle-miles per day1,643,547#37 of 52
Truck share on highways9.6%#34 of 52
Highway trucks per day1,595#40 of 52
Average travel time34.2 min#25 of 58
Average driver income$77,355#42 of 58
Average driver age42.6 yrs#47 of 58

Busiest roads in Butte County, California

Traffic concentrates on a few corridors: the three busiest roads average 43,318 vehicles a day, against 7,149 on the average road in Butte County.

CA 99 is the busiest road, at 76,257 vehicles a day, 4,214 of them trucks (5.5%). That is 2.6 times the next road, Mangrove Avenue (29,079). It tops the truck ranking too, with the most trucks.

Trucks make up 12.7% of traffic on CA 99 / CA 162, against 6.9% across all roads in the county.

1st Avenue is busy with cars rather than freight: only 2.5% of its traffic is trucks, against 6.9% county-wide.

Traffic and freight follow different roads here: only 2 of the five busiest roads also make the top 5 for trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1CA 99Motorway · 76,257vehicles4,214trucks · 5.5%
Road class
Motorway
Median trip time
33.4 min
Drivers’ median age
42.9 yrs
Drivers’ average income
$81,028

A main artery: CA 99's busiest stretch carries 10.7 times the county average; trucks are 5.5% of it, below the county-wide 6.9%.

2Mangrove AvenueTertiary road · 29,079vehicles763trucks · 2.6%
Road class
Tertiary road
Congestion ratio
68.6%
Median trip time
32.9 min
Drivers’ median age
39.0 yrs
Drivers’ average income
$76,774

Travel on Mangrove Avenue's busiest stretch runs 69% over free-flow time, against 22% across the county, so expect slower peak hours.

31st AvenueTertiary road · 24,619vehicles624trucks · 2.5%
Road class
Tertiary road
Congestion ratio
57.3%
Median trip time
31.9 min
Drivers’ median age
39.2 yrs
Drivers’ average income
$75,361

1st Avenue carries 3.4 times the county average on its busiest stretch, where the median trip lasts 31.9 minutes.

4CA 70Motorway · 23,685vehicles2,142trucks · 9.0%
Road class
Motorway
Congestion ratio
18.2%
Median trip time
43.2 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$70,203

At 3.3 times the county average, CA 70 draws drivers from neighborhoods averaging $70,203 in household income.

5Park AvenueSecondary road · 23,630vehicles1,130trucks · 4.8%
Road class
Secondary road
Congestion ratio
60.5%
Median trip time
30.4 min
Drivers’ median age
43.8 yrs
Drivers’ average income
$80,352

Park Avenue is one of the more congested roads here: trips take 60% longer than at free-flow speed, against 22% county-wide.

Ranked by trucks per day

Cars and light vehiclesTrucks
1CA 99Motorway · #1 by traffic76,257vehicles4,214trucks · 5.5%
2CA 149Motorway · 22,566vehicles2,225trucks · 9.9%
Road class
Motorway
Congestion ratio
26.2%
Median trip time
39.0 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$76,000

The busiest stretch of CA 149 carries 3.2 times the county average; trucks are 9.9% of it, above the county-wide 6.9%.

3CA 70Motorway · #4 by traffic23,685vehicles2,142trucks · 9.0%
4CA 99 / CA 162Trunk road · 12,341vehicles1,561trucks · 12.7%
Road class
Trunk road
Congestion ratio
27.7%
Median trip time
41.2 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$71,800

CA 99 / CA 162 carries 73% more than the county average on its busiest stretch, where the median trip lasts 41.2 minutes.

5CA 32Primary road · 17,427vehicles1,205trucks · 6.9%
Road class
Primary road
Congestion ratio
39.9%
Median trip time
33.0 min
Drivers’ median age
45.0 yrs
Drivers’ average income
$80,541

On its busiest stretch, CA 32 carries 2.4 times the county average; trucks are 6.9% of it, in line with the county-wide 6.9%.

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

ButteDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Butte County

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

Need segment-level traffic data?

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