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Traffic heat map of Monmouth County, New Jersey: 1,244 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Garden State Parkway

Monmouth County, New Jersey Traffic Counts

It is one of the top 3 counties in New Jersey for highway travel volume. This page breaks down traffic in Monmouth County, New Jersey across 1,244 miles of monitored roads split into 39,047 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 Volume & Performance in Monmouth County, New Jersey

Traffic

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

vehicles per day8,125
Trucks

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

6.1%
Average travel time

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

31.5 min
Congestion ratio

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

25.4%
Drivers’ average age

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

49.6 yrs
Drivers’ average income

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

$144,365

Our data shows 8,125 vehicles per day on the average road in Monmouth County, New Jersey, and 12,612,790 vehicle-miles traveled per day (≈4.6 billion per year) across its 1,244 miles of monitored roads. Trucks are a smaller part of the mix than across New Jersey: 6.1% against 7.9%.

Shorter trips than 90% of counties in New Jersey

Monmouth's average daily traffic volume is 9% lower than the state average - 8,125 vehicles per day against 8,886. Across the whole network, that travel is about 8.2% of New Jersey's statewide total. By volume, Monmouth's 8,125 vehicles per day outpaces 55% of counties in New Jersey.

The average trip takes 31.5 minutes, 5% lower than the state level. On travel time, Monmouth runs shorter than 90% of counties in New Jersey.

Congestion is somewhat lower than the state level, at a ratio of 25.4% (6% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Monmouth County, New Jersey

Trafficvehicles per day17,882
Trucks7.3%
Average travel time35.8 min
Congestion ratio48.2%
Drivers’ average age49.4 yrs
Drivers’ average income$135,953

Highways carry about half of all travel in Monmouth County, New Jersey, 55% of vehicle-miles. The average highway carries 17,882 vehicles per day, 158% more than the average non-highway road in the same area, which carries 6,930 vehicles per day.

With 28% of the road miles (346 miles in 4,259 segments), highways punch above their length, carrying 6,936,040 vehicle-miles traveled per day (≈2.5 billion per year).

No more than 2 other counties in New Jersey move more traffic on their highways.

Lower highway truck share than 90% of counties in New Jersey

At 7.3%, highway truck share is 29% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Monmouth's highway truck share (7.3%) is lower than 90% of counties in New Jersey. By raw truck volume, Monmouth carries fewer highway trucks than 80% of counties in New Jersey.

non-highway traffic icon

Non-highway Traffic in Monmouth County, New Jersey

Trafficvehicles per day6,930
Trucks4.7%
Average travel time31.0 min
Congestion ratio22.7%
Drivers’ average age49.9 yrs
Drivers’ average income$151,879

Local roads carry about half of all travel in Monmouth County, New Jersey, 45% of vehicle-miles. The average non-highway road carries 6,930 vehicles per day.

Spread over 898 miles and 34,788 segments, 72% of the road network, local roads carry a lighter load per mile: 5,676,750 vehicle-miles traveled per day (≈2.1 billion per year). The truck share on non-highway roads is 4.7%.

Drivers from higher-income areas than 85% of counties in New Jersey

Compared to highways, non-highway routes see 36% fewer trucks by share.

Non-highway congestion (22.7%) runs slightly lower than the state level (7% lower).

85% of counties in New Jersey see lower average driver income among trip origins than Monmouth. The driver population here skews older than 75% of counties in New Jersey.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 4:00 PM–7:00 PM, with volumes reaching approximately 75% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 16% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +13% versus the annual average.
Lowest month:
January is the quietest month, with volumes -13% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Monmouth County, New Jersey, the peak hour concentrates about 7% of the day's traffic, and there is a strong seasonal swing of +13% in high season.

Monmouth County vs. New Jersey Traffic Comparison

Of the four measures, highway truck share differs most: Monmouth County runs 29% below the New Jersey average. Its truck share is also 23% below.

MetricMonmouth CountyNew Jersey averageDifference
Traffic8,1258,886-8.6%
Truck % (Total Traffic)6.1%7.9%-23.1%
Truck % (Highway)7.3%10.2%-28.6%
Avg. Travel Time31.5 min33.4 min-5.5%

How Monmouth County compares

Monmouth County against nearby counties

Against the 4 nearest areas, Monmouth County carries 31.7% less traffic on a typical road; it has the fourth busiest roads of the five.

Monmouth County and the 4 nearest county-level areas by centroid distance, with the New Jersey average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Monmouth County8,1256.1%12,612,79031.5 min25.4%
Middlesex County, New Jersey11,9778.9%16,312,25333.0 min33.5%
Richmond County, New York12,4146.0%4,268,92732.2 min29.3%
Mercer County, New Jersey7,8499.6%5,871,43535.4 min23.1%
Union County, New Jersey15,3658.3%8,438,33834.3 min39.7%
New Jersey average8,8867.9%N/A33.4 min27.0%

Monmouth County ranked within New Jersey

On highway travel volume, Monmouth County is among the three highest county-level areas in New Jersey.

Monmouth County ranked among 21 county-level areas in New Jersey (1 = highest).
MeasureMonmouth CountyNew Jersey rank
Traffic volume (AADT)8,125#10 of 21
Highway vehicle-miles per day6,936,040#3 of 21
Truck share on highways7.3%#19 of 21
Highway trucks per day1,304#17 of 21
Average travel time31.5 min#19 of 21
Average driver income$144,365#4 of 21
Average driver age49.6 yrs#6 of 21

Monmouth County ranks #3 of 21 on highway travel volume but #19 of 21 on truck share on highways. It carries some of the heaviest highway traffic in New Jersey, but very little of it is freight - this is commuter and local car volume, not through-trucking.

Busiest roads in Monmouth County, New Jersey

Traffic concentrates on a few corridors: the three busiest roads average 49,374 vehicles a day, against 8,125 on the average road in Monmouth County.

Garden State Parkway leads with 55,535 vehicles a day, 4,987 of them trucks (9.0%). It also carries the most trucks.

Trips using Garden State Parkway (Express Lanes) Southbound are long: a median of 61.2 minutes against 31.5 county-wide, the mark of a through route.

Freight stands out on Garden State Parkway (Express Lanes) Southbound: trucks are 13.6% of the traffic there, against 6.1% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Garden State ParkwayMotorway · 55,535vehicles4,987trucks · 9.0%
Road class
Motorway
Congestion ratio
40.8%
Median trip time
46.1 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$127,365

Garden State Parkway carries through traffic: the median trip using it lasts 46.1 minutes, against 31.5 for the county.

2NJ 138Motorway · 47,295vehicles2,893trucks · 6.1%
Road class
Motorway
Congestion ratio
54.7%
Median trip time
34.5 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$129,610

A main artery: NJ 138's busiest stretch carries 5.8 times the county average; trucks are 6.1% of it, in line with the county-wide 6.1%.

3Central Jersey ExpresswayMotorway · 45,291vehicles4,559trucks · 10.1%
Road class
Motorway
Congestion ratio
41.9%
Median trip time
47.0 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$145,239

Drivers on Central Jersey Expressway are on long journeys, a median 47.0 minutes against 31.5 county-wide: a through route more than a local street.

4US 9Trunk road · 44,698vehicles2,114trucks · 4.7%
Road class
Trunk road
Congestion ratio
64.7%
Median trip time
31.6 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$143,742

US 9 is one of the more congested roads here: trips take 65% longer than at free-flow speed, against 25% county-wide.

5NJ 36Trunk road · 39,311vehicles1,832trucks · 4.7%
Road class
Trunk road
Congestion ratio
57.0%
Median trip time
37.0 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$124,262

Delays build on NJ 36: its congestion ratio of 57% over free-flow time is well above the county's 25%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Garden State ParkwayMotorway · #1 by traffic55,535vehicles4,987trucks · 9.0%
2Central Jersey ExpresswayMotorway · #3 by traffic45,291vehicles4,559trucks · 10.1%
3NJ 33 / NJ 34Trunk road · 37,513vehicles3,173trucks · 8.5%
Road class
Trunk road
Median trip time
35.9 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$142,704

NJ 33 / NJ 34 carries 4.6 times the county average at its busiest, 3,173 of them trucks (8.5%, above the county-wide 6.1%).

4NJ 138Motorway · #2 by traffic47,295vehicles2,893trucks · 6.1%
5Garden State Parkway (Express Lanes) SouthboundMotorway · 18,901vehicles2,573trucks · 13.6%
Road class
Motorway
Congestion ratio
42.4%
Median trip time
61.2 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$130,057

Garden State Parkway (Express Lanes) Southbound carries 2.3 times the county average on its busiest stretch, where the median trip lasts 61.2 minutes.

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

MonmouthDepartment 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 Monmouth County

The same traffic breakdown for the areas closest to Monmouth County, New Jersey.

Need segment-level traffic data?

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