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Traffic heat map of Mono County, California: 321 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and CA 203

Mono County, California Traffic Counts

Our Mono County, California traffic data covers 1,805 road segments over 321 road miles, with an average segment of just 940 ft. Its busiest road, Main Street, carries 25,862 vehicles a day, 5.4 times the average road. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Mono County, California

Traffic

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

vehicles per day4,809
Trucks

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

11.7%
Average travel time

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

35.2 min
Congestion ratio

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

5.5%
Drivers’ average age

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

47.4 yrs
Drivers’ average income

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

$93,146

The average monitored road in Mono County, California carries 4,809 vehicles per day. Across its 321 miles of monitored roads, that adds up to 1,027,863 vehicle-miles traveled per day (≈375 million per year). At 11.7%, the truck share runs above the 7.8% across California: about 1 in 9 vehicles.

Congestion 80% below the California average

Mono sees 62% lower average daily traffic volume than the state average (4,809 vehicles per day against 12,766), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.1% of California's statewide total of vehicle-miles. Mono carries less traffic than 74% of counties in California.

Journey times here (35.2 minutes on average) closely track the state level. 68% of counties in California have a shorter average travel time than Mono's 35.2 minutes.

The congestion ratio of 5.5% is 80% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Mono County, California

Trafficvehicles per day4,086
Trucks13.4%
Average travel time52.3 min
Congestion ratio7.6%
Drivers’ average age49.6 yrs
Drivers’ average income$92,755

A little more than half of the driving in Mono County, California happens on highways: 70% of all vehicle-miles. The average highway carries 4,086 vehicles per day, 23% less than the average non-highway road in the same area, which carries 5,334 vehicles per day.

With 54% of the road miles (173 miles in 759 segments), highways punch above their length, carrying 719,048 vehicle-miles traveled per day (≈262 million per year).

Fewer highway trucks than 92% of counties in California

Highway truck concentration here runs 29% higher than the state average, at 13.4%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Mono's highway truck share (13.4%) is higher than 59% of counties in California. By raw truck volume, Mono carries fewer highway trucks than 92% of counties in California.

non-highway traffic icon

Non-highway Traffic in Mono County, California

Trafficvehicles per day5,334
Trucks7.6%
Average travel time22.9 min
Congestion ratio4.0%
Drivers’ average age46.5 yrs
Drivers’ average income$93,608

A significant share of driving in Mono County, California, 30% of vehicle-miles, happens on local roads. A typical local road sees 5,334 vehicles per day.

Spread over 149 miles and 1,046 segments, 46% of the road network, local roads carry a lighter load per mile: 308,816 vehicle-miles traveled per day (≈113 million per year). About 1 in 13 vehicles on non-highway roads is a truck (7.6%).

Local congestion 85% below the California average

Non-highway roads carry a truck concentration that's 43% lower than the highway network.

Non-highway congestion (4.0%) runs 85% lower than the state average, pointing to smoother local traffic flow.

54% of counties in California see lower average driver income among trip origins than Mono. Mono's median driver age is higher than 68% of counties in California.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and a long afternoon plateau from 1:00 PM to 5:00 PM, with volumes reaching approximately 87% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (+5%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +61% versus the annual average.
Lowest month:
March is the quietest month, with volumes -80% versus the annual average.

Data Finding: Hourly & Seasonal Patterns

In Mono County, California, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +61% in high season.

Mono County vs. California Traffic Comparison

The average daily traffic per road sets Mono County apart: 62% below the California average. Its truck share, by contrast, is 50% above.

MetricMono CountyCalifornia averageDifference
Traffic4,80912,766-62.3%
Truck % (Total Traffic)11.7%7.8%+49.9%
Truck % (Highway)13.4%10.4%+29.0%
Avg. Travel Time35.2 min34.5 min+2.2%

How Mono County compares

Mono County against nearby counties

Set against the average of the 4 areas nearest to it, Mono County is 40.5% less congested; it has the second busiest roads of the five. Bigger and busier at once: more road than the areas around it and heavier traffic on it, which makes it the centre of gravity for travel in this part of the map.

Mono 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
Mono County4,80911.7%1,027,86335.2 min5.5%
Tuolumne County, California4,2846.5%1,187,91132.4 min15.5%
Mineral County, Nevada1,83717.4%473,46042.1 min5.7%
Douglas County, Nevada6,2047.2%1,369,82426.8 min12.9%
Alpine County, California1,43310.2%86,55949.0 min2.9%
California average12,7667.8%N/A34.5 min27.4%

Mono County ranked within California

Mono County sits in the bottom quarter of the California field on highway truck volume, at #48 of 52.

Mono County ranked among 58 county-level areas in California (1 = highest); measures without data in every county rank a smaller field, down to 52.
MeasureMono CountyCalifornia rank
Traffic volume (AADT)4,809#43 of 58
Highway vehicle-miles per day719,048#46 of 52
Truck share on highways13.4%#22 of 52
Highway trucks per day547#48 of 52
Average travel time35.2 min#19 of 58
Average driver income$93,146#27 of 58
Average driver age47.4 yrs#19 of 58

The two ends of this table sit far apart: #19 of 58 on average travel time, against #48 of 52 on highway truck volume.

Busiest roads in Mono County, California

The three busiest roads in Mono County average 21,286 vehicles a day, 4.4 times the county average of 4,809 across all its monitored roads.

Main Street is the busiest road, at 25,862 vehicles a day, 1,233 of them trucks (4.8%). US 395 carries the most trucks, 1,525 a day (12.0% of its traffic), although it ranks #5 for all traffic.

Main Street is a local road at heart: the median trip using it lasts 20.2 minutes, against 35.2 for the county.

Old Mammoth Road is busy with cars rather than freight: only 3.9% of its traffic is trucks, against 11.7% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetPrimary road · 25,862vehicles1,233trucks · 4.8%
Road class
Primary road
Median trip time
20.2 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$98,634

Main Street carries 5.4 times the county average at its busiest, 1,233 of them trucks (4.8%, below the county-wide 11.7%).

2CA 203Primary road · 20,712vehicles1,367trucks · 6.6%
Road class
Primary road
Median trip time
23.1 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$102,365

CA 203 is a local road at heart: the median trip using it lasts 23.1 minutes, against 35.2 for the county.

3Old Mammoth RoadSecondary road · 17,283vehicles675trucks · 3.9%
Road class
Secondary road
Median trip time
24.3 min
Drivers’ median age
46.3 yrs
Drivers’ average income
$102,895

Old Mammoth Road carries 3.6 times the county average at its busiest, 675 of them trucks (3.9%, below the county-wide 11.7%).

4Lake Mary RoadSecondary road · 16,008vehicles1,072trucks · 6.7%
Road class
Secondary road
Median trip time
22.9 min
Drivers’ median age
46.5 yrs
Drivers’ average income
$91,531

Trips on Lake Mary Road are short, a median 22.9 minutes against 35.2 county-wide, so it mostly serves local errands and commutes.

5US 395Trunk road · 12,698vehicles1,525trucks · 12.0%
Road class
Trunk road
Congestion ratio
15.5%
Median trip time
32.7 min
Drivers’ median age
51.5 yrs
Drivers’ average income
$94,520

Delays build on US 395: its congestion ratio of 15% over free-flow time is well above the county's 6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1US 395Trunk road · #5 by traffic12,698vehicles1,525trucks · 12.0%
2CA 203Primary road · #2 by traffic20,712vehicles1,367trucks · 6.6%
3CA 395Trunk road · 11,111vehicles1,299trucks · 11.7%
Road class
Trunk road
Congestion ratio
11.5%
Median trip time
31.2 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$99,370

CA 395 carries 2.3 times the county average on its busiest stretch, where the median trip lasts 31.2 minutes.

4Main StreetPrimary road · #1 by traffic25,862vehicles1,233trucks · 4.8%
5Lake Mary RoadSecondary road · #4 by traffic16,008vehicles1,072trucks · 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

MonoDepartment 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 Mono County

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

Need segment-level traffic data?

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