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Traffic heat map of Sumter County, Alabama: 328 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 20 and Washington Street

Sumter County, Alabama Traffic Counts

Traffic analytics for Sumter County, Alabama, calculated from real-world mobile and sensor networks on 1,671 road segments (328 road miles, about 1,038 ft each). Its highways carry one of the top 3 truck shares of any county in Alabama. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Sumter County, Alabama

Traffic

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

vehicles per day2,009
Trucks

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

21.3%
Average travel time

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

36.2 min
Congestion ratio

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

7.8%
Drivers’ average age

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

42.1 yrs
Drivers’ average income

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

$43,066

The average monitored road in Sumter County, Alabama carries 2,009 vehicles per day. Across its 328 miles of monitored roads, that adds up to 1,011,368 vehicle-miles traveled per day (≈369 million per year). Freight weighs heavily here: trucks are 21.3% of traffic, against 10.6% across Alabama.

Quieter roads than 91% of counties in Alabama

Sumter's average daily traffic volume is 66% lower than the state average - 2,009 vehicles per day against 5,932 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.7% of Alabama's statewide total. 91% of counties in Alabama see more traffic than Sumter's 2,009 vehicles per day.

The average trip takes 36.2 minutes, 14% higher than the state level. On travel time, Sumter runs longer than 88% of counties in Alabama.

At 50% lower than the state level, the 7.8% 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 Sumter County, Alabama

Trafficvehicles per day4,200
Trucks25.0%
Average travel time52.4 min
Congestion ratio6.9%
Drivers’ average age41.7 yrs
Drivers’ average income$47,422

Most travel in Sumter County, Alabama happens on highways, 75% of all vehicle-miles. The average highway carries 4,200 vehicles per day, 165% more than the average non-highway road in the same area, which carries 1,585 vehicles per day.

Highways make up 32% of the monitored road miles (104 miles, 271 segments), so they carry more than their share: 761,007 vehicle-miles traveled per day (≈278 million per year).

By highway travel volume, Sumter outranks 51% of counties in Alabama.

Higher highway truck share than 97% of counties in Alabama

At 25.0%, highway truck share is 69% higher than the state average. That marks Sumter as a major freight corridor, where highway access is what logistics operators compete on.

By truck concentration, highways here outrank 97% of counties in Alabama. 61% of counties in Alabama see fewer highway trucks per day than Sumter's roughly 1,049.

non-highway traffic icon

Non-highway Traffic in Sumter County, Alabama

Trafficvehicles per day1,585
Trucks10.2%
Average travel time33.0 min
Congestion ratio8.0%
Drivers’ average age42.6 yrs
Drivers’ average income$39,855

At 25% of vehicle-miles, local roads carry a smaller share of the traffic in Sumter County, Alabama than highways. The average non-highway road carries 1,585 vehicles per day.

Spread over 225 miles and 1,400 segments, 68% of the road network, local roads carry a lighter load per mile: 250,361 vehicle-miles traveled per day (≈91.4 million per year). Trucks make up 10.2% of non-highway traffic, about 1 in 10 vehicles.

Drivers from lower-income areas than 95% of counties in Alabama

Non-highway roads carry a truck concentration that's 59% lower than the highway network.

At 46% lower than the state level, the non-highway congestion ratio of 8.0% signals easier movement on local roads.

Trip origins here have lower average income than 95% of counties in Alabama. Sumter's median driver age is lower than 95% of counties in Alabama.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 59% higher than the daily average.
Weekend traffic:
Weekend traffic is about as busy as on weekdays (-1%): leisure and through trips largely replace the commute.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -10% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Sumter County, Alabama, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Sumter County vs. Alabama Traffic Comparison

Sumter County's biggest difference from the Alabama average is its truck share, 101% above it. Its highway truck share is also 69% above.

MetricSumter CountyAlabama averageDifference
Traffic2,0095,932-66.1%
Truck % (Total Traffic)21.3%10.6%+100.6%
Truck % (Highway)25.0%14.8%+68.6%
Avg. Travel Time36.2 min31.8 min+13.6%

How Sumter County compares

Sumter County against nearby counties

Against the 4 nearest areas, Sumter County carries 34.6% less traffic on a typical road and runs 6.2 percentage points more truck traffic; it has the fourth busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

Sumter County and the 4 nearest county-level areas by centroid distance, with the Alabama average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Sumter County2,00921.3%1,011,36836.2 min7.8%
Greene County, Alabama2,54622.5%864,13944.4 min7.4%
Kemper County, Mississippi1,43111.9%333,47339.0 min4.7%
Lauderdale County, Mississippi5,11114.4%2,531,07929.0 min13.8%
Hale County, Alabama3,19811.5%374,13532.0 min9.3%
Alabama average5,93210.6%N/A31.8 min15.5%

Sumter County ranked within Alabama

On truck share on highways, Sumter County is among the three highest county-level areas in Alabama.

Sumter County ranked among 67 county-level areas in Alabama (1 = highest); measures without data in every county rank a smaller field, down to 60.
MeasureSumter CountyAlabama rank
Traffic volume (AADT)2,009#61 of 67
Highway vehicle-miles per day761,007#30 of 60
Truck share on highways25.0%#3 of 60
Highway trucks per day1,049#24 of 60
Average travel time36.2 min#9 of 67
Average driver income$43,066#64 of 67
Average driver age42.1 yrs#64 of 67

Sumter County ranks #3 of 60 on truck share on highways but #61 of 67 on average daily traffic volume. It is a freight corridor without the traffic to match: trucks dominate the mix precisely because there is so little local car traffic to dilute them.

Busiest roads in Sumter County, Alabama

Traffic concentrates on a few corridors: the three busiest roads average 12,429 vehicles a day, against 2,009 on the average road in Sumter County.

I 20 leads with 23,719 vehicles a day, 6,242 of them trucks (26.3%). No other road comes close: Washington Street, in second place, carries 7,316. It also carries the most trucks.

I 20 carries longer journeys than most roads here, with a median trip of 54.1 minutes against 36.2 county-wide.

Few trucks use Washington Street: 7.8% of its traffic, under half the county's 21.3%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 20Motorway · 23,719vehicles6,242trucks · 26.3%
Road class
Motorway
Congestion ratio
23.5%
Median trip time
54.1 min
Drivers’ median age
38.8 yrs
Drivers’ average income
$45,411

Travel on I 20's busiest stretch runs 24% over free-flow time, against 8% across the county, so expect slower peak hours.

2Washington StreetPrimary road · 7,316vehicles567trucks · 7.8%
Road class
Primary road
Congestion ratio
20.6%
Median trip time
32.1 min
Drivers’ median age
43.8 yrs
Drivers’ average income
$37,306

Washington Street is one of the more congested roads here: trips take 21% longer than at free-flow speed, against 8% county-wide.

3US 80Trunk road · 6,250vehicles915trucks · 14.6%
Road class
Trunk road
Congestion ratio
7.1%
Median trip time
42.7 min
Drivers’ median age
46.2 yrs
Drivers’ average income
$52,869

US 80 carries 3.1 times the county average at its busiest, 915 of them trucks (14.6%, below the county-wide 21.3%).

4Lafayette StreetPrimary road · 3,470vehicles346trucks · 10.0%
Road class
Primary road
Congestion ratio
9.9%
Median trip time
31.4 min
Drivers’ median age
43.5 yrs
Drivers’ average income
$35,661

At 73% more than the county average, Lafayette Street draws drivers from neighborhoods averaging $35,661 in household income.

54th AvenuePrimary road · 3,441vehicles257trucks · 7.5%
Road class
Primary road
Congestion ratio
9.3%
Median trip time
28.1 min
Drivers’ median age
41.3 yrs
Drivers’ average income
$38,245

4th Avenue is busy by local standards, at 71% more than the county average on its busiest stretch; trucks are 7.5% of it, below the county-wide 21.3%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 20Motorway · #1 by traffic23,719vehicles6,242trucks · 26.3%
2US 80Trunk road · #3 by traffic6,250vehicles915trucks · 14.6%
3Washington StreetPrimary road · #2 by traffic7,316vehicles567trucks · 7.8%
4Lafayette StreetPrimary road · #4 by traffic3,470vehicles346trucks · 10.0%
5Broad StreetPrimary road · 2,870vehicles324trucks · 11.3%
Road class
Primary road
Congestion ratio
8.2%
Median trip time
42.0 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$40,167

Broad Street peaks at 2,870 vehicles a day, 43% more than the county average; trucks are 11.3% of it, below the county-wide 21.3%.

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

SumterDepartment 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 Sumter County

The same traffic breakdown for the areas closest to Sumter County, Alabama.

Need segment-level traffic data?

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