Crime Grade · FBI UCR Data · 2025
Sioux City, IA Crime Grade
How Sioux City grades for violent crime against every other reporting U.S. city — and against the rest of Iowa — based on the FBI's Uniform Crime Reporting data.
National
9/10
vs. all U.S. cities ≥ 25,000 population
Iowa
9/10
vs. Iowa cities ≥ 10,000 population
In 2025, the violent crime rate in Sioux City, IA was 492.4 per 100,000 residents (429 incidents over a population of 87,125). That puts Sioux City Infinity% above the U.S. rate of 0.0 and 108% above the Iowa statewide rate of 236.6.
That ranks Sioux City #3,266 of 3,771 ranked U.S. cities, safer than 13% of them, and #36 of 40 in Iowa. Violent crime is down 11% year over year and down 15% over the last five years.
Sioux City, IA crime — key facts
- National Crime Grade
- F (9/10)
- Iowa Grade
- F (9/10)
- Violent crime rate
- 492.4 / 100k
- National rank
- #3,266 of 3,771
- IA rank
- #36 of 40
- Safer than
- 13% of U.S. cities
- Year over year
- down 11%
- 5-year change
- down 15%
- Population
- 87,125
- Reporting agency
- Sioux City Police Department
- Data year
- 2025 · FBI UCR
Reported by Sioux City Police Department (FBI ORI IA0970100) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
Violent crime rate, 5-year trend
Per 100,000 residents. Sioux City (red), Iowa (blue), U.S. average (gray dashed).
Sioux City vs. U.S., 2025 — by offense
Rates per 100,000 residents for each offense category.
Full data, last 5 years
Rates per 100,000 residents. Raw counts in parentheses.
| Offense | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Violent crime | 581.3(481) | 528.2(452) | 577.5(493) | 553.0(474) | 492.4(429) |
| Murder | 3.6(3) | 1.2(1) | 8.2(7) | 3.5(3) | 1.1(1) |
| Rape | 101.5(84) | 93.5(80) | 87.9(75) | 82.8(71) | 53.9(47) |
| Robbery | 62.8(52) | 73.6(63) | 93.7(80) | 94.5(81) | 59.7(52) |
| Aggravated assault | 413.3(342) | 359.9(308) | 387.7(331) | 372.2(319) | 377.6(329) |
| Property crime | 3084.0(2,552) | 3004.2(2,571) | 3595.2(3,069) | 3349.6(2,871) | 2812.1(2,450) |
| Burglary | 487.0(403) | 404.3(346) | 509.6(435) | 473.7(406) | 396.0(345) |
| Larceny | 2285.2(1,891) | 2247.0(1,923) | 2725.9(2,327) | 2557.4(2,192) | 2150.9(1,874) |
| Motor vehicle theft | 281.6(233) | 331.9(284) | 333.9(285) | 295.2(253) | 256.0(223) |
How the Crime Grade is calculated
- What is the source of the Sioux City, IA Crime Grade?
- FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- What metric does the Sioux City Crime Grade use?
- Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- How is the national decile for Sioux City calculated?
- Sioux City's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- How is the Iowa state decile calculated?
- Same calculation restricted to Iowa cities with population ≥ 10,000.
- How do decile scores convert to a letter grade?
- 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- How often is the Sioux City Crime Grade refreshed?
- Twice a year. The FBI typically releases the prior year's full data each September.
- What are the limits of this Crime Grade?
- The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
Nearby cities in Iowa
Comparable Iowa cities by population.
Compare Sioux City to other places
Want crime data for your application?
SpotCrime's Real-Time Crime Data API delivers incident-level data, not just aggregate grades. Used by family-safety apps, real-estate platforms, executive protection teams, and government agencies.