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Traffic heat map of Hartford County, Connecticut: 1,654 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 84 and I 91

Hartford County, Connecticut Traffic Counts

It moves more highway traffic than any other county in Connecticut. This page breaks down traffic in Hartford County, Connecticut across 1,654 miles of monitored roads split into 53,290 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Hartford County, Connecticut

Traffic

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

vehicles per day7,711
Trucks

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

7.8%
Average travel time

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

34.0 min
Congestion ratio

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

18.8%
Drivers’ average age

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

46.9 yrs
Drivers’ average income

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

$107,934

A typical monitored road in Hartford County, Connecticut sees 7,711 vehicles per day, while its 1,654 miles of monitored roads together handle 16,835,829 vehicle-miles traveled per day (≈6.1 billion per year). About 1 in 13 vehicles is a truck, in line with Connecticut (8.4%).

Busier roads than 86% of counties in Connecticut

Hartford's average daily traffic volume is 13% higher than the state average - 7,711 vehicles per day against 6,794 - a critical factor for logistics and site planning. Across the whole network, that travel is about 27% of Connecticut's statewide total. Hartford carries more traffic than 86% of counties in Connecticut.

The average trip takes 34.0 minutes, on par with the state level. Its average travel time of 34.0 minutes is longer than 86% of counties in Connecticut.

The congestion ratio of 18.8% runs slightly higher than the state level (9% higher).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Hartford County, Connecticut

Trafficvehicles per day16,866
Trucks10.5%
Average travel time40.4 min
Congestion ratio32.9%
Drivers’ average age46.9 yrs
Drivers’ average income$106,346

Highways carry more than half of all travel in Hartford County, Connecticut (56% of vehicle-miles). The average highway carries 16,866 vehicles per day, 155% more than the average non-highway road in the same area, which carries 6,609 vehicles per day.

With 26% of the road miles (423 miles in 5,725 segments), highways punch above their length, carrying 9,432,314 vehicle-miles traveled per day (≈3.4 billion per year).

No county in Connecticut moves more traffic on its highways.

Lower highway truck share than 86% of counties in Connecticut

At 10.5%, highway truck share is 11% lower than the state average. The highway traffic mix is typical for Connecticut: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 86% of counties in Connecticut. By raw truck volume, Hartford carries more highway trucks than 57% of counties in Connecticut.

non-highway traffic icon

Non-highway Traffic in Hartford County, Connecticut

Trafficvehicles per day6,609
Trucks4.3%
Average travel time33.2 min
Congestion ratio17.1%
Drivers’ average age46.8 yrs
Drivers’ average income$109,337

Local roads carry a significant share of travel in Hartford County, Connecticut: 44% of all vehicle-miles. The average non-highway road carries 6,609 vehicles per day.

Spread over 1,231 miles and 47,565 segments, 74% of the road network, local roads carry a lighter load per mile: 7,403,514 vehicle-miles traveled per day (≈2.7 billion per year). About 1 in 23 vehicles on non-highway roads is a truck (4.3%).

Younger drivers than 86% of counties in Connecticut

Compared to highways, non-highway routes see 59% fewer trucks by share.

Non-highway congestion (17.1%) runs slightly higher than the state level (8% higher).

Hartford's average driver income is higher than 57% of counties in Connecticut. 86% of counties in Connecticut have an older driver population than Hartford.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 12:00 PM to 6:00 PM, with volumes reaching approximately 67% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 17% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even April–June, the busiest stretch, runs only +4% versus the annual average.
Lowest month:
January is the quietest month, with volumes -6% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Hartford County, Connecticut, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+4% in high season).

Hartford County vs. Connecticut Traffic Comparison

Hartford County stays close to the Connecticut average; the largest gap is its average daily traffic per road, 13% above.

MetricHartford CountyConnecticut averageDifference
Traffic7,7116,794+13.5%
Truck % (Total Traffic)7.8%8.4%-7.3%
Truck % (Highway)10.5%11.8%-11.3%
Avg. Travel Time34.0 min33.2 min+2.4%

How Hartford County compares

Hartford County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Hartford County moves 2.8 times the total daily travel; it has the 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.

Hartford County and the 4 nearest county-level areas by centroid distance, with the Connecticut average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Hartford County7,7117.8%16,835,82934.0 min18.8%
Tolland County, Connecticut5,37810.8%3,071,32132.5 min14.1%
Middlesex County, Connecticut5,5429.1%3,838,69230.5 min14.9%
Litchfield County, Connecticut4,4656.3%3,098,80330.8 min13.1%
New Haven County, Connecticut7,4778.5%14,364,51734.6 min18.4%
Connecticut average6,7948.4%N/A33.2 min17.2%

Hartford County ranked within Connecticut

Hartford County posts the highest highway travel volume of any county-level area in Connecticut.

Hartford County ranked among 8 county-level areas in Connecticut (1 = highest).
MeasureHartford CountyConnecticut rank
Traffic volume (AADT)7,711#2 of 8
Highway vehicle-miles per day9,432,314#1 of 8
Truck share on highways10.5%#7 of 8
Highway trucks per day1,766#4 of 8
Average travel time34.0 min#2 of 8
Average driver income$107,934#4 of 8
Average driver age46.9 yrs#7 of 8

The two ends of this table sit far apart: #1 of 8 on highway travel volume, against #7 of 8 on truck share on highways.

Busiest roads in Hartford County, Connecticut

The three busiest roads in Hartford County average 74,308 vehicles a day, 9.6 times the county average of 7,711 across all its monitored roads.

I 84 leads with 91,950 vehicles a day, 9,207 of them trucks (10.0%). I 91 carries the most trucks, 10,680 a day (13.2% of its traffic), although it ranks #2 for all traffic.

Trucks make up 21.3% of traffic on CT 15 and 14.2% on CT 20, against 7.8% across all roads in the county.

Trips using CT 15 are long: a median of 49.5 minutes against 34.0 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 84Motorway · 91,950vehicles9,207trucks · 10.0%
Road class
Motorway
Congestion ratio
50.2%
Median trip time
38.1 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$102,900

A main artery: I 84's busiest stretch carries 11.9 times the county average; trucks are 10.0% of it, above the county-wide 7.8%.

2I 91Motorway · 80,989vehicles10,680trucks · 13.2%
Road class
Motorway
Congestion ratio
55.1%
Median trip time
44.2 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$98,798

Delays build on I 91: its congestion ratio of 55% over free-flow time is well above the county's 19%.

3CT 72Motorway · 49,983vehicles4,886trucks · 9.8%
Road class
Motorway
Congestion ratio
43.4%
Median trip time
31.3 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$97,427

CT 72 is a trunk route for the county, carrying 6.5 times the county average on its busiest stretch; trucks are 9.8% of it, above the county-wide 7.8%.

4CT 15Motorway · 44,328vehicles9,436trucks · 21.3%
Road class
Motorway
Congestion ratio
52.9%
Median trip time
49.5 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$102,779

Travel on CT 15's busiest stretch runs 53% over free-flow time, against 19% across the county, so expect slower peak hours.

5CT 9Motorway · 41,873vehicles3,237trucks · 7.7%
Road class
Motorway
Congestion ratio
41.5%
Median trip time
32.3 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$101,387

CT 9 carries 5.4 times the county average at its busiest, 3,237 of them trucks (7.7%, in line with the county-wide 7.8%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 91Motorway · #2 by traffic80,989vehicles10,680trucks · 13.2%
2CT 15Motorway · #4 by traffic44,328vehicles9,436trucks · 21.3%
3I 84Motorway · #1 by traffic91,950vehicles9,207trucks · 10.0%
4CT 20Motorway · 39,024vehicles5,524trucks · 14.2%
Road class
Motorway
Congestion ratio
39.7%
Median trip time
43.3 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$103,030

CT 20 carries 5.1 times the county average on its busiest stretch, where the median trip lasts 43.3 minutes.

5CT 72Motorway · #3 by traffic49,983vehicles4,886trucks · 9.8%
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

HartfordDepartment 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 Hartford County

The same traffic breakdown for the areas closest to Hartford County, Connecticut.

Need segment-level traffic data?

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