Safety · Sioux
Sioux, IA crime & safety
Sioux's reported crime rate is well above Iowa's. Most reported incidents are property crimes, mainly thefts. 429 violent crimes were reported in 2025.
Crime reported to police, trends and how Sioux compares with the towns next door, from FBI data.
TownTapestry Safety GradeNew
D
Sioux’s Safety Grade: D
Sioux reports more crime per resident than most U.S. towns we grade: about 91% report less.
DViolent crimeDProperty crime▼Improving since 2023
All U.S. towns we grade (6,620)Safer than 9%
More reported crimeLess reported crime
Iowa towns we grade (123)Safer than 4%
Places of 25,000–100,000 people (1,259)Safer than 9%
High confidence. Built on 9,717 incidents over 3 years; ordinary year-to-year swings wouldn't change the grade.
How the Safety Grade works
- One score, from FBI data. Property crimes + 4 × violent crimes reported to police, per resident, pooled over the FBI’s latest 3 years (2023–2025). Violent crime counts four times as much because it matters more to how safe a place feels. It’s the same score behind our Safest towns in IA ranking.
- Graded on a national curve. Every U.S. town and city with 1,000+ residents that reported all 3 years (6,620 places) is lined up by score: A+ top 5%A next 10%A- next 10%B B+ to B−, next 30%C C+ to C−, next 30%D D and D−, bottom 15%
- Violent and property sub-grades use the same curve on each rate alone.
- Trend compares 2025 with 2023 and only says “improving” or “rising” when the change is bigger than normal year-to-year swings.
- Not graded: towns under 1,000 people, and towns missing any of the 3 years.
- What it can’t see: unreported crime, traffic safety, or which part of town incidents happen in. Towns with a campus, highway or big shopping center count incidents involving visitors. It’s our own summary of public data, not an official rating.
Reported crime, 2025
Sioux at a glance
Violent crime
4.9
per 1,000 residents · Iowa 2.4
Property crime
28
per 1,000 residents · Iowa 12
Incidents reported
2,871
429 violent · 2,442 property
Since 2022
▼ 5%
change in reported property crime
Violent crime per 1,000
Property crime per 1,000
Trend
Reported crime per 1,000 residents, 2022–2025
SiouxIowa
Solid lines: property crime · dashed: violent crime.
Show as a table
| Year | Sioux property | Iowa property | Sioux violent | Iowa violent |
|---|---|---|---|---|
| 2022 | 29.4 | 14.5 | 5.2 | 3 |
| 2023 | 35.5 | 14.9 | 5.7 | 2.8 |
| 2024 | 33.2 | 13.3 | 5.6 | 2.5 |
| 2025 | 28 | 12 | 4.9 | 2.4 |
What gets reported
2025, by type
Larceny / theft
1,874
Burglary
345
Vehicle theft
223
Aggravated assault
329
Robbery
52
Rape
47
Homicide
1
Arson
8
Offenses reported to police, not convictions.
Who keeps Sioux safe
Local public safety
👮 Sioux Police DepartmentReports its crime counts to the FBI — the figures on this page.
🚨 EmergenciesCall 911. For non-emergency numbers, alerts and preparedness, see the town guide.
Nearby
Sioux and its neighbors
Reported crime per 1,000 residents in each town's latest year. * = a count, for towns under 1,000 people. Grade: the Safety Grade; — = not graded.
| Town | Grade | Violent | Property | Year |
|---|---|---|---|---|
| Sioux | D | 4.9 | 28 | 2025 |
| North Sioux City | C+ | 1.6 | 18.3 | 2025 |
| South Sioux City | C | 1.7 | 19.5 | 2025 |
No town figures in the FBI's data: Big Sioux, Dakota Dunes, Sergeant Bluff, Dakota City.
How to read these numbers
What this data can and can't tell you
- It's reported crime. Only incidents reported to and recorded by police appear here. Many thefts and some assaults are never reported.
- Small numbers swing. In a town of about 87,100, a handful of incidents moves the rate noticeably from year to year. The trend matters more than any one year.
- Visitors count too. Towns with a campus, highway, beach or shopping center see incidents involving people who don't live there, which raises the per-resident rate.
- Gaps are real gaps. A missing year means the department didn't report a full year, not that nothing happened.
Source: FBI Uniform Crime Reporting Program, Crime Data Explorer: offenses known to law enforcement by city, 2025, and state and national rates. Counts are crimes reported to police, not convictions. This isn't an official statement of public safety — in an emergency, call 911.