This page delivers traffic analytics for Sac County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Sac County, Iowa among 339 road miles divided in 1,690 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 1,060 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
1,334
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
39.0 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
5.1%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.9 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$71,873
Our data indicates an estimated average traffic volume of 1,334 vehicles per day in Sac County, Iowa that results in 502,078 vehicle-miles traveled per day (≈183 million per year). The traffic stream is comprised of an average of 1 truck for every 8 vehicles. Typical time spent behind the wheel per trip is 39.0 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Iowa state averages: Sac's average daily traffic volume is 56% lower than the state average - 1,334 vehicles per day against 3,042 - suggesting less traffic load per road, a critical factor for logistics and site planning. In total volume terms, its road network carries 502,078 vehicle-miles traveled per day (≈183 million per year), about 0.6% of Iowa's statewide total. The average trip takes 39.0 minutes, 18% higher than the state level. The congestion ratio of 5.1% is 56% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning. By volume, Sac's 1,334 vehicles per day outpaces 26% of counties in Iowa. On travel time, Sac runs longer than 92% of counties in Iowa.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,918
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
14.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
59.2 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
6.3%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$71,514
A significant volume of traffic in Sac County, Iowa utilizes the highway network. The average highway carries 2,918 vehicles per day, 178% more than the average non-highway road in the same area, which carries 1,048 vehicles per day. That average covers 84 highway road miles divided in 259 segments (average segment length 1,721 ft), together carrying 279,006 vehicle-miles traveled per day (≈102 million per year). Trucks constitute 14.8% of highway traffic.
Analytical insight
At 14.8%, highway truck share is 8% lower than the state average, marking Sac as a primarily local traffic hub - underscoring the importance of local access for logistics operators. 54% of counties in Iowa see a lower highway truck share than Sac's 14.8%. By raw truck volume, Sac carries more highway trucks than 20% of counties in Iowa.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
1,048
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
35.4 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
4.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
51.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$72,067
The non-highway road network in Sac County, Iowa supports a substantial volume of traffic. The average non-highway road carries 1,048 vehicles per day, 64% less than the average highway in the same area, which carries 2,918 vehicles per day. That average covers 255 non-highway road miles divided in 1,431 segments (average segment length 940 ft), together carrying 223,072 vehicle-miles traveled per day (≈81.4 million per year). Trucks constitute 8.5% of non-highway traffic.
Analytical insight
Compared to highways, non-highway routes see 42% fewer trucks by share. Non-highway congestion (4.8%) runs 57% lower than the state average, pointing to smoother local traffic flow. Overall, average travel time here is longer than 92% of counties in Iowa. Trip origins here have higher average income than 50% of counties in Iowa. The driver population here skews older than 42% of counties in Iowa.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 64% higher than the daily average.
Weekend traffic:
Weekend volumes run about 31% below weekday levels.
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +13% versus the annual average.
Lowest month:
January is the quietest month, with volumes -20% versus the annual average.
Analytical insight
In Sac County, Iowa, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +13% in high season.
Traffic Flow Profile Comparison
Metric
Sac
Iowa
Average
Difference
Traffic
1,334
3,042
-56.1%
Truck % (Total Traffic)
12.0%
11.0%
+8.7%
Truck % (Highway)
14.8%
16.1%
-8.4%
Avg. Travel Time
39.0 min
33.0 min
+18.2%
Frequently Asked Questions
The average daily traffic volume is calculated at 1,334 vehicles per day, providing a baseline for daily operations and site assessment.
Sac carries more highway trucks by raw volume than 20% of counties in Iowa, at roughly 430 per day.
The average travel time for drivers is 39.0 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 64% above the daily average.
Approximately 53% of highway traffic and 13% of non-highway traffic consists of vehicles whose trip originates outside Sac County, Iowa. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Traffic volumes are typically 13% higher during May–July. Volumes drop to their lowest levels in January, averaging 1,061 vehicles per day - a 20% decrease from the annual average.
Drivers on Sac roads have a median age of 49 years, and the median household income of the neighborhoods trips originate from averages $71,873 - useful context for retail siting and customer profiling.
Trucks account for approximately 12.0% of the total traffic mix across all road types, with a significantly higher concentration of 14.8% on highways.
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)
