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Traffic heat map of Decatur County, Georgia: 442 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Colquitt Highway and Shotwell Street

Decatur County, Georgia Traffic Counts

Our Decatur County, Georgia traffic data covers 2,893 road segments over 442 road miles, with an average segment of just 807 ft. Its busiest road, Colquitt Highway, carries 11,445 vehicles a day, 4.1 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 Volume & Performance in Decatur County, Georgia

Traffic

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

vehicles per day2,803
Trucks

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

8.8%
Average travel time

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

32.8 min
Congestion ratio

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

9.3%
Drivers’ average age

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

48.0 yrs
Drivers’ average income

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

$55,486

A typical monitored road in Decatur County, Georgia sees 2,803 vehicles per day, while its 442 miles of monitored roads together handle 741,216 vehicle-miles traveled per day (≈271 million per year). Trucks are 8.8% of traffic, close to the 9.7% across Georgia.

Traffic 62% below the Georgia average

Decatur sees 62% lower average daily traffic volume than the state average (2,803 vehicles per day against 7,398), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. In total volume terms, its road network carries about 0.3% of Georgia's statewide total of vehicle-miles. 63% of counties in Georgia see more traffic than Decatur's 2,803 vehicles per day.

At 32.8 minutes, the average travel time matches the state level closely. On travel time, Decatur runs shorter than 59% of counties in Georgia.

At 45% lower than the state level, the 9.3% congestion ratio signals smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Decatur County, Georgia

Trafficvehicles per day4,224
Trucks11.1%
Average travel time36.8 min
Congestion ratio8.5%
Drivers’ average age48.4 yrs
Drivers’ average income$55,915

Highways carry about half of all travel in Decatur County, Georgia, 49% of vehicle-miles. The average highway carries 4,224 vehicles per day, 90% more than the average non-highway road in the same area, which carries 2,224 vehicles per day.

With 25% of the road miles (109 miles in 838 segments), highways punch above their length, carrying 364,400 vehicle-miles traveled per day (≈133 million per year).

Fewer highway trucks than 88% of counties in Georgia

The concentration of trucks on highways (11.1%) is 18% 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 64% of counties in Georgia. Decatur's highway truck count is lower than 88% of counties in Georgia, at roughly 469 trucks per day.

non-highway traffic icon

Non-highway Traffic in Decatur County, Georgia

Trafficvehicles per day2,224
Trucks6.7%
Average travel time31.1 min
Congestion ratio9.6%
Drivers’ average age47.3 yrs
Drivers’ average income$55,133

Local roads carry about half of all travel in Decatur County, Georgia, 51% of vehicle-miles. On the average non-highway road, that comes to 2,224 vehicles per day.

Local roads make up 75% of the monitored road miles (333 miles in 2,055 segments) but carry less than their share of travel: 376,816 vehicle-miles traveled per day (≈138 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.7%).

Drivers from lower-income areas than 79% of counties in Georgia

The concentration of trucks on non-highway roads is 40% lower than on highways.

Non-highway congestion (9.6%) runs 40% lower than the state average, pointing to smoother local traffic flow.

Trip origins here have lower average income than 79% of counties in Georgia. 77% of counties in Georgia have a younger driver population than Decatur.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 5:00 PM–6:00 PM, with volumes reaching approximately 86% 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:
Traffic is nearly flat through the year: even October–December, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -8% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Decatur County, Georgia, the peak hour concentrates about 8% of the day's traffic, and traffic stays steady through the year (+3% in high season).

Decatur County vs. Georgia Traffic Comparison

The average daily traffic per road sets Decatur County apart: 62% below the Georgia average. Its highway truck share is also 18% below.

MetricDecatur CountyGeorgia averageDifference
Traffic2,8037,398-62.1%
Truck % (Total Traffic)8.8%9.7%-8.6%
Truck % (Highway)11.1%13.6%-18.2%
Avg. Travel Time32.8 min33.6 min-2.4%

How Decatur County compares

Decatur County moves more traffic than any nearby county

Set against the average of the 4 areas nearest to it, Decatur County moves 2.6 times the total daily travel; 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.

Decatur County and the 4 nearest county-level areas by centroid distance, with the Georgia average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Decatur County2,8038.8%741,21632.8 min9.3%
Seminole County, Georgia1,7418.2%199,98730.3 min6.4%
Miller County, Georgia1,9899.5%198,87638.3 min6.7%
Grady County, Georgia3,2808.3%592,09732.2 min10.2%
Baker County, Georgia1,56610.2%136,57852.1 min8.9%
Georgia average7,3989.7%N/A33.6 min16.8%

Decatur County ranked within Georgia

Decatur County sits in the bottom quarter of the Georgia field on highway truck volume, at #130 of 147.

Decatur County ranked among 159 county-level areas in Georgia (1 = highest); measures without data in every county rank a smaller field, down to 147.
MeasureDecatur CountyGeorgia rank
Traffic volume (AADT)2,803#101 of 159
Highway vehicle-miles per day364,400#78 of 147
Truck share on highways11.1%#94 of 147
Highway trucks per day469#130 of 147
Average travel time32.8 min#94 of 159
Average driver income$55,486#126 of 159
Average driver age48.0 yrs#38 of 159

Decatur County ranks #38 of 159 on average driver age but #130 of 147 on highway truck volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Decatur County, Georgia

The three busiest roads in Decatur County average 9,538 vehicles a day, 3.4 times the county average of 2,803 across all its monitored roads.

Colquitt Highway leads with 11,445 vehicles a day, 1,212 of them trucks (10.6%). It tops the truck ranking too, with the most trucks.

Tallahassee Highway carries longer journeys than most roads here, with a median trip of 48.1 minutes against 32.8 county-wide.

Freight stands out on Martha Berry Highway: trucks are 15.0% of the traffic there, against 8.8% 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
1Colquitt HighwayMotorway · 11,445vehicles1,212trucks · 10.6%
Road class
Motorway
Congestion ratio
12.7%
Median trip time
35.5 min
Drivers’ median age
49.1 yrs
Drivers’ average income
$55,276

Colquitt Highway peaks at 11,445 vehicles a day, 4.1 times the county average; trucks are 10.6% of it, above the county-wide 8.8%.

2Shotwell StreetPrimary road · 8,838vehicles442trucks · 5.0%
Road class
Primary road
Congestion ratio
15.9%
Median trip time
33.4 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$50,653

Shotwell Street carries 3.2 times the county average at its busiest, 442 of them trucks (5.0%, below the county-wide 8.8%).

3Tallahassee RoadPrimary road · 8,332vehicles332trucks · 4.0%
Road class
Primary road
Congestion ratio
24.9%
Median trip time
29.6 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$54,997

Delays build on Tallahassee Road: its congestion ratio of 25% over free-flow time is well above the county's 9%.

4US 84Motorway · 8,291vehicles903trucks · 10.9%
Road class
Motorway
Congestion ratio
6.0%
Median trip time
34.5 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$56,339

US 84 carries 3.0 times the county average on its busiest stretch, where the median trip lasts 34.5 minutes.

5Scott StreetPrimary road · 8,105vehicles327trucks · 4.0%
Road class
Primary road
Congestion ratio
19.1%
Median trip time
30.1 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$55,363

Travel on Scott Street's busiest stretch runs 19% over free-flow time, against 9% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Colquitt HighwayMotorway · #1 by traffic11,445vehicles1,212trucks · 10.6%
2US 84Motorway · #4 by traffic8,291vehicles903trucks · 10.9%
3Martha Berry HighwayTrunk road · 5,888vehicles881trucks · 15.0%
Road class
Trunk road
Congestion ratio
5.9%
Median trip time
46.9 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$53,817

Martha Berry Highway carries through traffic: the median trip using it lasts 46.9 minutes, against 32.8 for the county.

4Thomasville RoadTrunk road · 7,540vehicles741trucks · 9.8%
Road class
Trunk road
Congestion ratio
9.9%
Median trip time
31.2 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$56,312

At 2.7 times the county average, Thomasville Road draws drivers from neighborhoods averaging $56,312 in household income.

5Tallahassee HighwayTrunk road · 5,919vehicles732trucks · 12.4%
Road class
Trunk road
Median trip time
48.1 min
Drivers’ median age
46.3 yrs
Drivers’ average income
$53,428

The busiest stretch of Tallahassee Highway carries 2.1 times the county average; trucks are 12.4% of it, above the county-wide 8.8%.

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

DecaturDepartment 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 Decatur County

The same traffic breakdown for the areas closest to Decatur County, Georgia.

Need segment-level traffic data?

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