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Mason County, Washington Traffic Counts

This page delivers traffic analytics for Mason County, Washington. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Mason County, Washington among 352 road miles divided in 5,993 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 310 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

3,459

Trucks

5.8%

Average travel time

33.7 min

Congestion ratio

12.5%

Drivers’ average age

48.6 yrs

Drivers’ average income

$81,750

Our data indicates an estimated average traffic volume of 3,459 vehicles per day in Mason County, Washington that results in 1,196,383 vehicle-miles traveled per day (≈437 million per year). The traffic stream is comprised of an average of 1 truck for every 17 vehicles. Typical time spent behind the wheel per trip is 33.7 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Washington state averages: Mason's average daily traffic volume is 53% lower than the state average - 3,459 vehicles per day against 7,322 - suggesting less traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 1,196,383 vehicle-miles traveled per day (≈437 million per year), roughly 0.8% of Washington's statewide total. At 33.7 minutes, the average travel time is 1% higher than the state level. Congestion runs 37% lower than the state level, at a ratio of 12.5% - smoother traffic flow - crucial for traffic control improvement and logistics planning. By volume, Mason's 3,459 vehicles per day outpaces 45% of counties in Washington. On travel time, Mason runs longer than 47% of counties in Washington.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

6,645

Trucks

6.7%

Average travel time

34.1 min

Congestion ratio

16.1%

Drivers’ average age

47.5 yrs

Drivers’ average income

$78,985

A significant volume of traffic in Mason County, Washington utilizes the highway network. The average highway carries 6,645 vehicles per day, 111% more than the average non-highway road in the same area, which carries 3,147 vehicles per day. That average covers 49 highway road miles divided in 534 segments (average segment length 481 ft), together carrying 408,531 vehicle-miles traveled per day (≈149 million per year). Trucks constitute 6.7% of highway traffic.

Analytical insight

The concentration of trucks on highways (6.7%) is 30% lower than the state average for similar road classifications. This indicates Mason serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. 3% of counties in Washington see a lower highway truck share than Mason's 6.7%. By raw truck volume, Mason carries more highway trucks than 28% of counties in Washington.
non-highway traffic icon

Non-highway traffic

Traffic

3,147

Trucks

5.3%

Average travel time

33.6 min

Congestion ratio

12.1%

Drivers’ average age

48.9 yrs

Drivers’ average income

$82,957

The non-highway road network in Mason County, Washington supports a substantial volume of traffic. The average non-highway road carries 3,147 vehicles per day, 53% less than the average highway in the same area, which carries 6,645 vehicles per day. That average covers 303 non-highway road miles divided in 5,459 segments (average segment length 293 ft), together carrying 787,852 vehicle-miles traveled per day (≈288 million per year). Trucks constitute 5.3% of non-highway traffic.

Analytical insight

Compared to highways, non-highway routes see 20% fewer trucks by share. The non-highway congestion ratio of 12.1% is 38% lower than the state level, suggesting more efficient local mobility than the state average. 47% of counties in Washington see shorter overall travel times than Mason. Trip origins here have higher average income than 58% of counties in Washington. The driver population here skews older than 61% of counties in Washington.

Time-of-Day & Seasonal Patterns

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Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–5:00 PM, with volumes reaching approximately 97% higher than the daily average.
Weekend traffic:
Weekend volumes run about 16% above weekday levels.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +37% versus the annual average.
Lowest month:
January is the quietest month, with volumes -32% versus the annual average.

Analytical insight

In Mason County, Washington, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is pronounced at +37% in high season.

Traffic Flow Profile Comparison

Metric

Mason

Washington
Average

Difference

Traffic

3,459

7,322

-52.8%

Truck % (Total Traffic)

5.8%

7.1%

-18.5%

Truck % (Highway)

6.7%

9.5%

-29.5%

Avg. Travel Time

33.7 min

33.2 min

+1.5%

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

WashingtonDepartment 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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