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Traffic heat map of Jefferson County, New York: 873 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Mill Street and Public Square

Jefferson County, New York Traffic Counts

TrafficZoom tracks traffic on 873 road miles in Jefferson County, New York, divided into 6,625 segments averaging 696 ft. Its busiest road, Mill Street, carries 29,870 vehicles a day, 8.2 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 Jefferson County, New York

Traffic

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

vehicles per day3,652
Trucks

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

9.9%
Average travel time

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

33.7 min
Congestion ratio

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

13.9%
Drivers’ average age

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

45.1 yrs
Drivers’ average income

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

$67,826

The average monitored road in Jefferson County, New York carries 3,652 vehicles per day. Across its 873 miles of monitored roads, that adds up to 2,466,725 vehicle-miles traveled per day (≈900 million per year). Trucks are 9.9% of traffic, more than the 8.0% across New York.

Traffic 50% below the New York average

At 3,652 vehicles per day, the average monitored road in Jefferson carries 50% less traffic than the state average of 7,377, suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.9% of New York's statewide total of vehicle-miles. Jefferson carries less traffic than 54% of counties in New York.

The average trip takes 33.7 minutes, on par with the state level. On travel time, Jefferson runs shorter than 64% of counties in New York.

Congestion runs 33% lower than the state level, at a ratio of 13.9%, which means 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 Jefferson County, New York

Trafficvehicles per day8,313
Trucks12.4%
Average travel time43.3 min
Congestion ratio28.9%
Drivers’ average age45.0 yrs
Drivers’ average income$64,738

Highways carry about half of all travel in Jefferson County, New York, 50% of vehicle-miles. The average highway carries 8,313 vehicles per day, 210% more than the average non-highway road in the same area, which carries 2,680 vehicles per day.

Highways make up 22% of the monitored road miles (196 miles, 1,143 segments), so they carry more than their share: 1,243,709 vehicle-miles traveled per day (≈454 million per year).

That is more highway travel volume than 57% of counties in New York.

Fewer highway trucks than 75% of counties in New York

Highway truck concentration here runs 20% higher than the state average, at 12.4%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

By truck concentration, highways here outrank 53% of counties in New York. By raw truck volume, Jefferson carries fewer highway trucks than 75% of counties in New York.

non-highway traffic icon

Non-highway Traffic in Jefferson County, New York

Trafficvehicles per day2,680
Trucks7.4%
Average travel time31.7 min
Congestion ratio10.7%
Drivers’ average age45.3 yrs
Drivers’ average income$70,155

Local roads carry about half of all travel in Jefferson County, New York, 50% of vehicle-miles. On the average non-highway road, that comes to 2,680 vehicles per day.

Local roads make up 78% of the monitored road miles (677 miles in 5,482 segments) but carry less than their share of travel: 1,223,017 vehicle-miles traveled per day (≈446 million per year). The truck share on non-highway roads is 7.4%.

Younger drivers than 92% of counties in New York

Non-highway roads carry a truck concentration that's 40% lower than the highway network.

The non-highway congestion ratio of 10.7% is 45% lower than the state level, suggesting more efficient local mobility than the state average.

Jefferson's average driver income is lower than 87% of counties in New York. 92% of counties in New York have an older driver population than Jefferson.

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 64% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 5% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +32% versus the annual average.
Lowest month:
January is the quietest month, with volumes -26% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Jefferson County, New York, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +32% in high season.

Jefferson County vs. New York Traffic Comparison

Of the four measures, average daily traffic per road differs most: Jefferson County runs 50% below the New York average. Its truck share, by contrast, is 24% above.

MetricJefferson CountyNew York averageDifference
Traffic3,6527,377-50.5%
Truck % (Total Traffic)9.9%8.0%+24.5%
Truck % (Highway)12.4%10.3%+20.4%
Avg. Travel Time33.7 min34.7 min-2.8%

How Jefferson County compares

Jefferson County against nearby counties

Nothing in this table sets Jefferson County sharply apart from the 4 areas nearest to it, though it has the second busiest roads of the five.

Jefferson 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
Jefferson County3,6529.9%2,466,72533.7 min13.9%
Lewis County, New York2,25410.1%531,42233.5 min6.9%
Oswego County, New York3,3309.4%2,747,22441.0 min10.1%
St. Lawrence County, New York3,3419.0%2,040,28334.5 min12.5%
Oneida County, New York4,2699.2%4,508,88734.1 min13.7%
New York average7,3778.0%N/A34.7 min20.7%

Jefferson County ranked within New York

Average driver age places Jefferson County #57 of 62 in New York - the bottom quarter of the state.

Jefferson 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.
MeasureJefferson CountyNew York rank
Traffic volume (AADT)3,652#34 of 62
Highway vehicle-miles per day1,243,709#27 of 61
Truck share on highways12.4%#29 of 61
Highway trucks per day1,030#46 of 61
Average travel time33.7 min#40 of 62
Average driver income$67,826#54 of 62
Average driver age45.1 yrs#57 of 62

Busiest roads in Jefferson County, New York

The three busiest roads in Jefferson County average 25,300 vehicles a day, 6.9 times the county average of 3,652 across all its monitored roads.

Mill Street leads with 29,870 vehicles a day, 1,443 of them trucks (4.8%). I 81 carries the most trucks, 2,188 a day (14.7% of its traffic), although it ranks #4 for all traffic.

Mill Street carries longer journeys than most roads here, with a median trip of 56.0 minutes against 33.7 county-wide.

Drivers on Public Square come from neighborhoods with an average household income of $49,653, 27% below the county average of $67,826.

Few trucks use Mill Street: 4.8% of its traffic, under half the county's 9.9%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Mill StreetTrunk road · 29,870vehicles1,443trucks · 4.8%
Road class
Trunk road
Congestion ratio
95.5%
Median trip time
56.0 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$54,638

Delays build on Mill Street: its congestion ratio of 95% over free-flow time is well above the county's 14%.

2Public SquareTrunk road · 26,286vehicles1,336trucks · 5.1%
Road class
Trunk road
Congestion ratio
71.8%
Median trip time
43.6 min
Drivers’ median age
45.1 yrs
Drivers’ average income
$49,653

Travel on Public Square's busiest stretch runs 72% over free-flow time, against 14% across the county, so expect slower peak hours.

3Arsenal StreetTrunk road · 19,744vehicles1,176trucks · 6.0%
Road class
Trunk road
Congestion ratio
36.7%
Median trip time
32.9 min
Drivers’ median age
45.5 yrs
Drivers’ average income
$59,271

Arsenal Street carries 5.4 times the county average on its busiest stretch, where the median trip lasts 32.9 minutes.

4I 81Motorway · 14,934vehicles2,188trucks · 14.7%
Road class
Motorway
Congestion ratio
11.9%
Median trip time
44.0 min
Drivers’ median age
46.3 yrs
Drivers’ average income
$72,676

Drivers on I 81 are on long journeys, a median 44.0 minutes against 33.7 county-wide: a through route more than a local street.

5State StreetTrunk road · 14,511vehicles968trucks · 6.7%
Road class
Trunk road
Congestion ratio
48.2%
Median trip time
37.3 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$54,840

State Street peaks at 14,511 vehicles a day, 4.0 times the county average; trucks are 6.7% of it, below the county-wide 9.9%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 81Motorway · #4 by traffic14,934vehicles2,188trucks · 14.7%
2Mill StreetTrunk road · #1 by traffic29,870vehicles1,443trucks · 4.8%
3Public SquareTrunk road · #2 by traffic26,286vehicles1,336trucks · 5.1%
4Arsenal StreetTrunk road · #3 by traffic19,744vehicles1,176trucks · 6.0%
5I 781Motorway · 9,622vehicles1,050trucks · 10.9%
Road class
Motorway
Congestion ratio
7.8%
Median trip time
28.9 min
Drivers’ median age
39.4 yrs
Drivers’ average income
$63,284

I 781 carries 2.6 times the county average at its busiest, 1,050 of them trucks (10.9%, above the county-wide 9.9%).

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

JeffersonDepartment 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 Jefferson County

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

Need segment-level traffic data?

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