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Traffic heat map of Johnson County, Wyoming: 389 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Hart Street and I 90

Johnson County, Wyoming Traffic Counts

TrafficZoom tracks traffic on 389 road miles in Johnson County, Wyoming, divided into 1,362 segments averaging 1,509 ft. Its busiest road, Hart Street, carries 10,674 vehicles a day, 4.3 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 icon

Total Traffic Volume & Performance in Johnson County, Wyoming

Traffic

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

vehicles per day2,469
Trucks

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

16.0%
Average travel time

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

37.4 min
Drivers’ average age

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

52.8 yrs
Drivers’ average income

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

$64,830

Our data shows 2,469 vehicles per day on the average road in Johnson County, Wyoming, and 608,130 vehicle-miles traveled per day (≈222 million per year) across its 389 miles of monitored roads. About 1 in 6 vehicles is a truck, in line with Wyoming (17.9%).

Quieter roads than 73% of counties in Wyoming

Johnson's average daily traffic volume is 32% lower than the state average - 2,469 vehicles per day against 3,650 - suggesting less traffic load per road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 2.8% of Wyoming's statewide total of vehicle-miles. 73% of counties in Wyoming see more traffic than Johnson's 2,469 vehicles per day.

Journey times run 8% higher than the state level, at 37.4 minutes on average. 68% of counties in Wyoming have a shorter average travel time than Johnson's 37.4 minutes.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Johnson County, Wyoming

Trafficvehicles per day1,818
Trucks17.9%
Average travel time49.4 min
Drivers’ average age52.8 yrs
Drivers’ average income$67,579

Highways carry the vast majority of travel in Johnson County, Wyoming, 83% of all vehicle-miles. The average highway carries 1,818 vehicles per day, 35% less than the average non-highway road in the same area, which carries 2,784 vehicles per day.

Their share of road miles is similar, 73% (286 miles in 445 segments), carrying 504,032 vehicle-miles traveled per day (≈184 million per year).

Higher highway truck share than 74% of counties in Wyoming

At 17.9%, highway truck share is 23% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Johnson's highway truck share (17.9%) is higher than 74% of counties in Wyoming. By raw truck volume, Johnson carries fewer highway trucks than 74% of counties in Wyoming.

non-highway traffic icon

Non-highway Traffic in Johnson County, Wyoming

Trafficvehicles per day2,784
Trucks6.8%
Average travel time31.5 min
Drivers’ average age52.8 yrs
Drivers’ average income$62,015

At 17% of vehicle-miles, local roads carry a smaller share of the traffic in Johnson County, Wyoming than highways. A typical local road sees 2,784 vehicles per day.

Spread over 103 miles and 917 segments, 27% of the road network, local roads carry a lighter load per mile: 104,097 vehicle-miles traveled per day (≈38.0 million per year). About 1 in 15 vehicles on non-highway roads is a truck (6.8%).

Drivers from lower-income areas than 91% of counties in Wyoming

Non-highway roads carry a truck concentration that's 62% lower than the highway network.

Trip origins here have lower average income than 91% of counties in Wyoming. Johnson's median driver age is higher than 91% of counties in Wyoming.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 5:00 PM–6:00 PM, with volumes reaching approximately 84% higher than the daily average.
Weekend traffic:
Weekends are busier than weekdays: volumes run about 13% above weekday levels, which usually points to leisure, tourism or shopping traffic.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +58% versus the annual average.
Lowest month:
January is the quietest month, with volumes -46% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Johnson County, Wyoming, the peak hour concentrates about 8% of the day's traffic, and there is a strong seasonal swing of +58% in high season.

Johnson County vs. Wyoming Traffic Comparison

The average daily traffic per road sets Johnson County apart: 32% below the Wyoming average. Its highway truck share is also 23% below.

MetricJohnson CountyWyoming averageDifference
Traffic2,4693,650-32.4%
Truck % (Total Traffic)16.0%17.9%-10.6%
Truck % (Highway)17.9%23.3%-23.3%
Avg. Travel Time37.4 min34.5 min+8.3%

How Johnson County compares

Johnson County has a higher truck share than any nearby county

Set against the average of the 4 areas nearest to it, Johnson County carries 46.0% 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.

Johnson County and the 4 nearest county-level areas by centroid distance, with the Wyoming average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Johnson County2,46916.0%608,13037.4 minN/A
Washakie County, Wyoming2,2847.2%171,03138.8 minN/A
Sheridan County, Wyoming4,54210.4%654,08231.5 minN/A
Campbell County, Wyoming4,72011.8%1,290,99933.0 min12.6%
Natrona County, Wyoming6,7359.8%1,773,24937.3 min18.0%
Wyoming average3,65017.9%N/A34.5 min11.5%

Johnson County ranked within Wyoming

Johnson County sits in Wyoming's top three on average driver age.

Johnson County ranked among 23 county-level areas in Wyoming (1 = highest); measures without data in every county rank a smaller field, down to 20.
MeasureJohnson CountyWyoming rank
Traffic volume (AADT)2,469#17 of 23
Highway vehicle-miles per day504,032#11 of 20
Truck share on highways17.9%#6 of 20
Highway trucks per day325#15 of 20
Average travel time37.4 min#8 of 23
Average driver income$64,830#21 of 23
Average driver age52.8 yrs#3 of 23

Johnson County ranks #3 of 23 on average driver age but #21 of 23 on average driver income. The driver population here skews older and lower-income than most of Wyoming.

Busiest roads in Johnson County, Wyoming

On their busiest stretches, the three busiest roads in Johnson County carry 8,943 vehicles a day on average, 3.6 times the typical road in the county (2,469).

Hart Street leads with 10,674 vehicles a day, 531 of them trucks (5.0%). I 90 carries the most trucks, 1,295 a day (15.8% of its traffic), although it ranks #2 for all traffic.

Trips using I 25 are long: a median of 52.9 minutes against 37.4 county-wide, the mark of a through route.

Few trucks use Hart Street: 5.0% of its traffic, under half the county's 16.0%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Hart StreetPrimary road · 10,674vehicles531trucks · 5.0%
Road class
Primary road
Median trip time
26.8 min
Drivers’ median age
53.8 yrs
Drivers’ average income
$57,923

Hart Street is a local road at heart: the median trip using it lasts 26.8 minutes, against 37.4 for the county.

2I 90Motorway · 8,173vehicles1,295trucks · 15.8%
Road class
Motorway
Median trip time
38.2 min
Drivers’ median age
52.9 yrs
Drivers’ average income
$66,935

I 90 carries 3.3 times the county average at its busiest, 1,295 of them trucks (15.8%, in line with the county-wide 16.0%).

3Fort StreetPrimary road · 7,981vehicles435trucks · 5.5%
Road class
Primary road
Median trip time
34.0 min
Drivers’ median age
52.3 yrs
Drivers’ average income
$54,990

Fort Street carries 3.2 times the county average on its busiest stretch, where the median trip lasts 34.0 minutes.

4Main StreetPrimary road · 5,809vehicles280trucks · 4.8%
Road class
Primary road
Median trip time
32.0 min
Drivers’ median age
52.1 yrs
Drivers’ average income
$58,563

At 2.4 times the county average, Main Street draws drivers from neighborhoods averaging $58,563 in household income.

5US 16Primary road · 4,899vehicles312trucks · 6.4%
Road class
Primary road
Median trip time
28.5 min
Drivers’ median age
52.8 yrs
Drivers’ average income
$61,965

The busiest stretch of US 16 carries 2.0 times the county average; trucks are 6.4% of it, below the county-wide 16.0%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 90Motorway · #2 by traffic8,173vehicles1,295trucks · 15.8%
2I 25Motorway · 2,839vehicles579trucks · 20.4%
Road class
Motorway
Median trip time
52.9 min
Drivers’ median age
54.0 yrs
Drivers’ average income
$72,119

I 25 peaks at 2,839 vehicles a day, 15% more than the county average; trucks are 20.4% of it, above the county-wide 16.0%.

3Hart StreetPrimary road · #1 by traffic10,674vehicles531trucks · 5.0%
4Fort StreetPrimary road · #3 by traffic7,981vehicles435trucks · 5.5%
5US 16Primary road · #5 by traffic4,899vehicles312trucks · 6.4%
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

JohnsonDepartment 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 Johnson County

The same traffic breakdown for the areas closest to Johnson County, Wyoming.

Need segment-level traffic data?

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