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
3/10
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.
That ranks Johnston #882 of 3,771 ranked U.S. cities, safer than 77% of them, and #5 of 40 in Iowa. Violent crime is up 3% year over year and down 49% over the last five years.
Johnston, IA crime — key facts
- National Crime Grade
- A (3/10)
- Iowa Grade
- A (1/10)
- Violent crime rate
- 79.1 / 100k
- National rank
- #882 of 3,771
- IA rank
- #5 of 40
- Safer than
- 77% of U.S. cities
- Year over year
- up 3%
- 5-year change
- down 49%
- Population
- 25,287
- Reporting agency
- Johnston Police Department
- Data year
- 2025 · FBI UCR
Reported by Johnston Police Department (FBI ORI IA0770700) to the FBI Uniform Crime Reporting Program. Download the full dataset (CSV) · methodology.
About Johnston, IA
Also known as
- Johnston Station
Name history sourced from the USGS Geographic Names Information System (GNIS) — public-domain federal geographic-names data.
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
- What is the source of the Johnston, 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 Johnston 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 Johnston calculated?
- Johnston'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 Johnston 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 Johnston 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.