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Traffic | vehicles per day1,934 |
|---|---|
Trucks | 9.3% |
Average travel time | 34.5 min |
Congestion ratio | 8.3% |
Drivers’ average age | 46.1 yrs |
Drivers’ average income | $83,159 |
The average monitored road in Plymouth County, Iowa carries 1,934 vehicles per day. Across its 506 miles of monitored roads, that adds up to 804,177 vehicle-miles traveled per day (≈294 million per year). About 1 in 11 vehicles is a truck, fewer than the 1 in 9 across Iowa.
Plymouth sees 36% lower average daily traffic volume than the state average (1,934 vehicles per day against 3,042), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. In total volume terms, its road network carries about 1.0% of Iowa's statewide total of vehicle-miles. By volume, Plymouth's 1,934 vehicles per day outpaces 64% of counties in Iowa.
At 34.5 minutes, the average travel time matches the state level closely. On travel time, Plymouth runs longer than 63% of counties in Iowa.
At 27% lower than the state level, the 8.3% congestion ratio signals smoother traffic flow - fewer delays make delivery windows more reliable.
| Traffic | vehicles per day6,644 |
|---|---|
| Trucks | 11.8% |
| Average travel time | 41.6 min |
| Congestion ratio | 13.1% |
| Drivers’ average age | 45.2 yrs |
| Drivers’ average income | $84,567 |
Highways carry a significant share of travel in Plymouth County, Iowa: 36% of all vehicle-miles. The average highway carries 6,644 vehicles per day, 305% more than the average non-highway road in the same area, which carries 1,639 vehicles per day.
That comes from just 11% of the monitored road miles: 57 miles in 198 segments, carrying 287,664 vehicle-miles traveled per day (≈105 million per year).
Highway truck concentration here runs 27% lower than the state average, at 11.8%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 83% of counties in Iowa. 58% of counties in Iowa see more highway trucks per day than Plymouth's roughly 786.
| Traffic | vehicles per day1,639 |
|---|---|
| Trucks | 7.9% |
| Average travel time | 34.1 min |
| Congestion ratio | 8.0% |
| Drivers’ average age | 47.5 yrs |
| Drivers’ average income | $82,388 |
Local roads carry more than half of all travel in Plymouth County, Iowa (64% of vehicle-miles). A typical local road sees 1,639 vehicles per day.
Local roads make up 89% of the monitored road miles (450 miles in 3,167 segments) but carry less than their share of travel: 516,512 vehicle-miles traveled per day (≈189 million per year). The truck share on non-highway roads is 7.9%.
The concentration of trucks on non-highway roads is 33% lower than on highways.
At 28% lower than the state level, the non-highway congestion ratio of 8.0% signals easier movement on local roads.
Trip origins here have higher average income than 89% of counties in Iowa. The driver population here skews younger than 85% of counties in Iowa.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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