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Mercer County, Missouri Traffic Counts

This page delivers traffic analytics for Mercer County, Missouri. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Mercer County, Missouri among 103 road miles divided in 562 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 969 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

Traffic

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

1,121

Trucks

Trucks

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

10.6%

Average travel time

Average travel time

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

36.0 min

Drivers’ average age

Drivers’ average age

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

52.0 yrs

Drivers’ average income

Drivers’ average income

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

$58,659

Our data indicates an estimated average traffic volume of 1,121 vehicles per day in Mercer County, Missouri that results in 94,145 vehicle-miles traveled per day (≈34.4 million 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 36.0 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Missouri state averages: Mercer sees 80% lower average daily traffic volume than the state average (1,121 vehicles per day against 5,631), suggesting less demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries 94,145 vehicle-miles traveled per day (≈34.4 million per year), about 0.1% of Missouri's statewide total. At 36.0 minutes, the average travel time is 15% higher than the state level. 10% of counties in Missouri see less traffic than Mercer's 1,121 vehicles per day. 86% of counties in Missouri have a shorter average travel time than Mercer's 36.0 minutes.

Highway vs. Non-Highway Traffic Analysis

Analytical insight

N/A
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Non-highway traffic

Traffic

Traffic

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

1,121

Trucks

Trucks

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

10.6%

Average travel time

Average travel time

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

36.0 min

Drivers’ average age

Drivers’ average age

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

52.0 yrs

Drivers’ average income

Drivers’ average income

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

$58,659

The non-highway road network in Mercer County, Missouri supports a substantial volume of traffic. The average non-highway road carries 1,121 vehicles per day. That average covers 103 non-highway road miles divided in 562 segments (average segment length 969 ft), together carrying 94,145 vehicle-miles traveled per day (≈34.4 million per year). Trucks constitute 10.6% of non-highway traffic.

Analytical insight

Overall, average travel time here is longer than 86% of counties in Missouri. 34% of counties in Missouri see lower average driver income among trip origins than Mercer. 86% of counties in Missouri have a younger driver population than Mercer.

Time-of-Day & Seasonal Patterns

Analytical insight

In Mercer County, Missouri, the peak hour concentrates about 7% of the day's traffic.

Traffic Flow Profile Comparison

Metric

Mercer

Missouri
Average

Difference

Traffic

1,121

5,631

-80.1%

Truck % (Total Traffic)

10.6%

9.8%

+7.5%

Truck % (Highway)

13.4%

Avg. Travel Time

36.0 min

31.3 min

+15.2%

How Mercer County compares

Mercer County against nearby areas

Against the 4 nearest areas, Mercer County moves 25.7% of the total daily travel and runs 5.1 percentage points less truck traffic; it has the fourth busiest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Mercer County and the 4 nearest county-level areas by centroid distance, with the Missouri average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Mercer County1,12110.6%94,14536.0 minN/A
Grundy County, Missouri1,5668.5%192,84435.9 minN/A
Harrison County, Missouri1,75920.7%593,42730.9 min3.2%
Decatur County, Iowa1,48022.2%518,78730.1 minN/A
Wayne County, Iowa1,05311.0%160,12239.2 min6.1%
Missouri average5,6319.8%N/A31.3 min19.4%

Mercer County ranked within Missouri

Mercer County sits in the bottom quarter of the Missouri field on average daily traffic volume, at #104 of 115.

Where Mercer County sits among Missouri's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
MeasureMercer CountyMissouri rank
Traffic volume (AADT)1,121#104 of 115
Average travel time36.0 min#17 of 115
Average driver income$58,659#76 of 115
Average driver age52.0 yrs#17 of 115

Mercer County ranks #17 of 115 on average travel time but #104 of 115 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.

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

MissouriDepartment 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.
TrafficZoom methodology
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Data current as of:
Q3 2026

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Counties near Mercer County

The same traffic breakdown for the areas closest to Mercer County, Missouri.

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