Crime Grade · FBI UCR Data · 2025
Johnston, IA Crime Grade
How Johnston 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
2/10
vs. all U.S. cities ≥ 25,000 population
Iowa
1/10
vs. Iowa cities ≥ 10,000 population
In 2025, the violent crime rate in Johnston, IA was 79.1 per 100,000 residents (20 incidents over a population of 25,287). That puts Johnston Infinity% above the U.S. rate of 0.0 and 67% below the Iowa statewide rate of 236.6.
Violent crime rate, 5-year trend
Per 100,000 residents. Johnston (red), Iowa (blue), U.S. average (gray dashed).
Johnston 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 | 155.7(37) | 74.1(18) | 101.9(25) | 76.6(19) | 79.1(20) |
| Murder | 0.0(0) | 4.1(1) | 0.0(0) | 4.0(1) | 0.0(0) |
| Rape | 54.7(13) | 28.8(7) | 16.3(4) | 12.1(3) | 4.0(1) |
| Robbery | 4.2(1) | 4.1(1) | 16.3(4) | 8.1(2) | 4.0(1) |
| Aggravated assault | 96.8(23) | 37.0(9) | 69.3(17) | 52.4(13) | 71.2(18) |
| Property crime | 846.0(201) | 654.5(159) | 709.3(174) | 757.5(188) | 672.3(170) |
| Burglary | 92.6(22) | 41.2(10) | 57.1(14) | 76.6(19) | 91.0(23) |
| Larceny | 660.8(157) | 539.2(131) | 591.1(145) | 535.9(133) | 502.2(127) |
| Motor vehicle theft | 88.4(21) | 74.1(18) | 57.1(14) | 145.1(36) | 79.1(20) |
How the Crime Grade is calculated
- Source: FBI Uniform Crime Reporting via the Crime Data Explorer. Agency-level data, pulled directly. No third-party aggregators, no proprietary score.
- Metric: Violent crime rate per 100,000 residents (murder + rape + robbery + aggravated assault), most recent fully-reported year.
- National decile: Johnston's rate placed against all FBI-reporting U.S. cities with population ≥ 25,000. 1 = safest.
- State decile: Same calculation restricted to Iowa cities with population ≥ 10,000.
- Letter grade: 1–3 = A · 4–5 = B · 6–7 = C · 8 = D · 9–10 = F.
- Refresh: Twice a year. The FBI typically releases the prior year's full data each September.
- Limits: The FBI relies on local agency reporting. Rates reflect what was reported, not what occurred.
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