Iowa's comparable FBI window (2014–2024, 11 years) shows declines on both major offense rates — charts below keep the larger |endpoint| move first.
Declining-window verdict
Iowa's violent crime rate fell 9.9% from 2014 to 2024; its property crime rate fell 37.3%. The endpoints agree on the broad direction, but the intervening years still matter.
Full-window endpoints
Violent crime moved from 264.7 to 238.5 per 100,000 (-9.9%). Property crime moved from 2050.6 to 1286.3 (-37.3%). These are endpoint comparisons, not proof that every intervening year followed the same direction.
Latest national comparison
For 2024, the state rate was 238.5 per 100,000 versus 352.0 across the state records in this dataset, a gap of 32.2% below. This is a state-level benchmark, not a neighborhood-safety conclusion.
Peak and trough
The highest observed violent-crime rate was 304.1 in 2020; the lowest was 222.5 in 2018. The latest value lies 20% of the way from that low to that peak, which shows whether the endpoint is close to an extreme or near the middle of the observed range.
Year-to-year movement
The largest annual change ran from 2018 to 2019: +27.0%. Across the full sequence, 4 year-to-year steps rose by more than 1% and 6 fell by more than 1%. A single sharp step can reflect participation or reporting changes as well as a real change in recorded offenses.
Recent direction check
From 2021 to 2024, the violent-crime rate fell 15.6%, compared with -9.9% across the full 2014-2024 window. That difference is why the latest few observations should be read separately from the decade-scale endpoints.
Rate denominator
The reported population changed from 3,107,126 to 3,241,488 (+4.3%). Rates account for that denominator change; raw offense counts do not. This is one reason a count and a per-100,000 rate can move by different percentages over the same years.
Iowa's property rate fell 26.9% (-557.6 per 100K) from 2017 to 2018 (2076.7 → 1519.1) — the sharpest comparable year-to-year step in this window. The largest move the other way was jumped 20.6% from 2018 to 2019 (1519.1 → 1832.3).
Iowa's property gap vs the US aggregate moved from 18.7% below in 2014 to 24.8% below in 2024 (-6.2 pp).
| Year | Coverage | Population | Property | Rate | YoY | Violent | Rate |
|---|---|---|---|---|---|---|---|
| 2024 | Comparable | 3,241,488 | 41,694 | 1286.3 | ↓ 9.1% | 7,730 | 238.5 |
| 2023 | Comparable | 3,207,004 | 45,366 | 1414.6 | ↑ 3.8% | 8,524 | 265.8 |
| 2022 | Comparable | 3,200,517 | 43,637 | 1363.4 | ↓ 7.0% | 8,885 | 277.6 |
| 2021 | Comparable | 3,193,079 | 46,812 | 1466 | ↓ 13.2% | 9,024 | 282.6 |
| 2020 | Comparable | 3,163,561 | 53,462 | 1689.9 | ↓ 7.8% | 9,621 | 304.1 |
| 2019 | Comparable | 3,155,070 | 57,810 | 1832.3 | ↑ 20.6% | 8,914 | 282.5 |
| 2018 | Comparable | 3,156,145 | 47,944 | 1519.1 | ↓ 26.9% | 7,023 | 222.5 |
| 2017 | Comparable | 3,145,711 | 65,326 | 2076.7 | ↓ 0.4% | 8,950 | 284.5 |
| 2016 | Comparable | 3,134,693 | 65,386 | 2085.9 | ↑ 1.6% | 9,012 | 287.5 |
| 2015 | Comparable | 3,123,899 | 64,126 | 2052.8 | ↑ 0.1% | 8,488 | 271.7 |
| 2014 | Comparable | 3,107,126 | 63,714 | 2050.6 | - | 8,226 | 264.7 |
More in Iowa: overview, safest cities, most dangerous, compare. Methodology — FBI UCR / Crime Data Explorer rates per 100,000 for Iowa (2014–2024); Census population where FBI denominators are missing.