
Total Traffic Volume & Performance in Harrison County, Mississippi
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day13,207 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.5 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 31.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 46.1 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $68,584 |
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The average monitored road in Harrison County, Mississippi carries 13,207 vehicles per day. Across its 717 miles of monitored roads, that adds up to 9,299,337 vehicle-miles traveled per day (≈3.4 billion per year). Trucks are a smaller part of the mix than across Mississippi: 7.5% against 11.1%.
The busiest roads of any county in Mississippi
Harrison's average daily traffic volume is 148% higher than the state average - 13,207 vehicles per day against 5,319 - suggesting more traffic load per road - heavy exposure for roadside retail, and tight road space for deliveries. Across the whole network, that travel is about 9.4% of Mississippi's statewide total. Harrison stands out as having the highest traffic volume in Mississippi - 13,207 vehicles per day.
Journey times here (31.5 minutes on average) closely track the state level. 52% of counties in Mississippi have a longer average travel time than Harrison's 31.5 minutes.
Congestion runs 108% higher than the state level, at a ratio of 31.6%, which means more pronounced congestion - expect markedly slower peak-hour deliveries and unreliable arrival times.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Harrison County, Mississippi
| Traffic | vehicles per day26,143 |
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| Trucks | 11.6% |
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| Average travel time | 35.5 min |
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| Congestion ratio | 49.3% |
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| Drivers’ average age | 46.6 yrs |
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| Drivers’ average income | $70,334 |
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Highways carry a significant share of travel in Harrison County, Mississippi: 39% of all vehicle-miles. The average highway carries 26,143 vehicles per day, 109% more than the average non-highway road in the same area, which carries 12,527 vehicles per day.
Highways make up 20% of the monitored road miles (141 miles, 629 segments), so they carry more than their share: 3,655,476 vehicle-miles traveled per day (≈1.3 billion per year).
By highway travel volume, that ranks Harrison in the top 3 counties in Mississippi.
More highway trucks than 95% of counties in Mississippi
Highway truck concentration here runs 27% lower than the state average, at 11.6%. Trucks are a small share of a very large highway flow, so Harrison still moves heavy freight volumes alongside its passenger traffic.
90% of counties in Mississippi see a higher highway truck share than Harrison's 11.6%. By raw truck volume, Harrison carries more highway trucks than 95% of counties in Mississippi.

Non-highway Traffic in Harrison County, Mississippi
| Traffic | vehicles per day12,527 |
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| Trucks | 4.8% |
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| Average travel time | 31.3 min |
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| Congestion ratio | 30.6% |
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| Drivers’ average age | 46.0 yrs |
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| Drivers’ average income | $67,636 |
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A little more than half of the driving in Harrison County, Mississippi happens on local roads: 61% of all vehicle-miles. On the average non-highway road, that comes to 12,527 vehicles per day.
Local roads make up 80% of the monitored road miles (576 miles in 11,962 segments) but carry less than their share of travel: 5,643,861 vehicle-miles traveled per day (≈2.1 billion per year). Trucks make up 4.8% of non-highway traffic, about 1 in 21 vehicles.
Local congestion 104% above the Mississippi average
Compared to highways, non-highway routes see 58% fewer trucks by share.
Non-highway congestion (30.6%) runs 104% higher than the state average, pointing to slower local traffic flow.
Harrison's average driver income is higher than 88% of counties in Mississippi. 53% of counties in Mississippi have an older driver population than Harrison.