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Traffic heat map of St. Lawrence County, New York: 952 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Pierrepont Avenue

St. Lawrence County, New York Traffic Counts

TrafficZoom tracks traffic on 952 road miles in St. Lawrence County, New York, divided into 6,254 segments averaging 804 ft. Its busiest road, Pierrepont Avenue, carries 21,734 vehicles a day, 6.5 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
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 St. Lawrence County, New York

Traffic

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

vehicles per day3,341
Trucks

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

9.0%
Average travel time

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

34.5 min
Congestion ratio

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

12.5%
Drivers’ average age

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

45.6 yrs
Drivers’ average income

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

$68,058

The average monitored road in St. Lawrence County, New York carries 3,341 vehicles per day. Across its 952 miles of monitored roads, that adds up to 2,040,283 vehicle-miles traveled per day (≈745 million per year). Trucks are 9.0% of traffic, close to the 8.0% across New York.

Traffic 55% below the New York average

St. Lawrence sees 55% lower average daily traffic volume than the state average (3,341 vehicles per day against 7,377), 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 0.8% of New York's statewide total of vehicle-miles. 61% of counties in New York see more traffic than St. Lawrence's 3,341 vehicles per day.

The average trip takes 34.5 minutes, on par with the state level. Its average travel time of 34.5 minutes is shorter than 52% of counties in New York.

At 39% lower than the state level, the 12.5% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in St. Lawrence County, New York

Trafficvehicles per day5,176
Trucks10.4%
Average travel time33.8 min
Congestion ratio14.7%
Drivers’ average age45.3 yrs
Drivers’ average income$68,191

Travel in St. Lawrence County, New York splits roughly evenly, with about half of it (47% of vehicle-miles) on highways. The average highway carries 5,176 vehicles per day, 98% more than the average non-highway road in the same area, which carries 2,619 vehicles per day.

Highways make up 23% of the monitored road miles (215 miles, 1,766 segments), so they carry more than their share: 959,968 vehicle-miles traveled per day (≈350 million per year).

52% of counties in New York move less traffic on their highways.

Fewer highway trucks than 97% of counties in New York

At 10.4%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for New York: neither freight- nor commuter-dominated.

63% of counties in New York see a higher highway truck share than St. Lawrence's 10.4%. 97% of counties in New York see more highway trucks per day than St. Lawrence's roughly 539.

non-highway traffic icon

Non-highway Traffic in St. Lawrence County, New York

Trafficvehicles per day2,619
Trucks7.7%
Average travel time34.7 min
Congestion ratio11.7%
Drivers’ average age46.0 yrs
Drivers’ average income$67,926

Travel in St. Lawrence County, New York splits roughly evenly, with about half of it (53% of vehicle-miles) on local roads. A typical local road sees 2,619 vehicles per day.

Spread over 737 miles and 4,488 segments, 77% of the road network, local roads carry a lighter load per mile: 1,080,316 vehicle-miles traveled per day (≈394 million per year). About 1 in 13 vehicles on non-highway roads is a truck (7.7%).

Younger drivers than 89% of counties in New York

Compared to highways, non-highway routes see 26% fewer trucks by share.

Non-highway congestion (11.7%) runs 40% lower than the state average, pointing to smoother local traffic flow.

84% of counties in New York see higher average driver income among trip origins than St. Lawrence. The driver population here skews younger than 89% of counties in New York.

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 12:00 PM to 6:00 PM, with volumes reaching approximately 66% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +8% 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 St. Lawrence County, New York, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +8% in high season.

St. Lawrence County vs. New York Traffic Comparison

Of the four measures, average daily traffic per road differs most: St. Lawrence County runs 55% below the New York average.

MetricSt. Lawrence CountyNew York averageDifference
Traffic3,3417,377-54.7%
Truck % (Total Traffic)9.0%8.0%+12.9%
Truck % (Highway)10.4%10.3%+1.2%
Avg. Travel Time34.5 min34.7 min-0.6%

How St. Lawrence County compares

St. Lawrence County against nearby counties

Nothing in this table sets St. Lawrence County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five. The same kind of road, simply more of it: traffic per road matches the areas around it while the network itself is larger.

St. Lawrence County and the 4 nearest county-level areas by centroid distance, with the New York average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
St. Lawrence County3,3419.0%2,040,28334.5 min12.5%
Franklin County, New York3,3228.4%756,31441.6 min10.5%
Jefferson County, New York3,6529.9%2,466,72533.7 min13.9%
Lewis County, New York2,25410.1%531,42233.5 min6.9%
Clinton County, New York3,9288.5%1,566,69738.0 min14.2%
New York average7,3778.0%N/A34.7 min20.7%

St. Lawrence County ranked within New York

St. Lawrence County sits in the bottom quarter of the New York field on highway truck volume, at #59 of 61.

St. Lawrence County ranked among 62 county-level areas in New York (1 = highest); measures without data in every county rank a smaller field, down to 61.
MeasureSt. Lawrence CountyNew York rank
Traffic volume (AADT)3,341#38 of 62
Highway vehicle-miles per day959,968#30 of 61
Truck share on highways10.4%#39 of 61
Highway trucks per day539#59 of 61
Average travel time34.5 min#33 of 62
Average driver income$68,058#52 of 62
Average driver age45.6 yrs#55 of 62

Busiest roads in St. Lawrence County, New York

On their busiest stretches, the three busiest roads in St. Lawrence County carry 15,651 vehicles a day on average, 4.7 times the typical road in the county (3,341).

Pierrepont Avenue leads with 21,734 vehicles a day, 1,186 of them trucks (5.5%). That is 69% more than the next road, Main Street (12,879). Elm Street carries the most trucks, 1,532 a day (12.4% of its traffic), although it ranks #3 for all traffic.

Drivers on US 11 are noticeably younger, with a median age of 37.1 against 45.6 across the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Pierrepont AvenuePrimary road · 21,734vehicles1,186trucks · 5.5%
Road class
Primary road
Congestion ratio
97.6%
Median trip time
42.6 min
Drivers’ median age
38.9 yrs
Drivers’ average income
$59,015

Delays build on Pierrepont Avenue: its congestion ratio of 98% over free-flow time is well above the county's 13%.

2Main StreetTrunk road · 12,879vehicles1,361trucks · 10.6%
Road class
Trunk road
Congestion ratio
31.0%
Median trip time
37.0 min
Drivers’ median age
41.9 yrs
Drivers’ average income
$68,757

Main Street carries 3.9 times the county average on its busiest stretch, where the median trip lasts 37.0 minutes.

3Elm StreetTrunk road · 12,339vehicles1,532trucks · 12.4%
Road class
Trunk road
Congestion ratio
19.1%
Median trip time
41.7 min
Drivers’ median age
39.9 yrs
Drivers’ average income
$55,590

At 3.7 times the county average, Elm Street draws drivers from neighborhoods averaging $55,590 in household income.

4Market StreetTrunk road · 11,776vehicles1,210trucks · 10.3%
Road class
Trunk road
Congestion ratio
32.2%
Median trip time
36.0 min
Drivers’ median age
43.4 yrs
Drivers’ average income
$63,333

Travel on Market Street's busiest stretch runs 32% over free-flow time, against 13% across the county, so expect slower peak hours.

5Maple StreetTrunk road · 11,096vehicles855trucks · 7.7%
Road class
Trunk road
Congestion ratio
20.9%
Median trip time
33.7 min
Drivers’ median age
41.6 yrs
Drivers’ average income
$68,729

The busiest stretch of Maple Street carries 3.3 times the county average; trucks are 7.7% of it, below the county-wide 9.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Elm StreetTrunk road · #3 by traffic12,339vehicles1,532trucks · 12.4%
2Main StreetTrunk road · #2 by traffic12,879vehicles1,361trucks · 10.6%
3Market StreetTrunk road · #4 by traffic11,776vehicles1,210trucks · 10.3%
4Pierrepont AvenuePrimary road · #1 by traffic21,734vehicles1,186trucks · 5.5%
5US 11Trunk road · 10,859vehicles1,162trucks · 10.7%
Road class
Trunk road
Congestion ratio
21.4%
Median trip time
43.6 min
Drivers’ median age
37.1 yrs
Drivers’ average income
$68,010

On its busiest stretch, US 11 carries 3.3 times the county average; trucks are 10.7% of it, above the county-wide 9.0%.

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

St. LawrenceDepartment 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 St. Lawrence County

The same traffic breakdown for the areas closest to St. Lawrence County, New York.

Need segment-level traffic data?

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