Johnston Crime Rate Report (Iowa)

* The source of actual data on this Johnston, Iowa crime rate report is the FBI Report of Offenses Known to Law Enforcement for the corresponding year or years. Arson numbers are reported inconsistently. Zero values may indicate the data was not available. The projected crime rate data displayed above was generated from the trends found in the years of actual reported crime data on file. In this case, the Johnston crime report data for 2026 was projected from 19 years of actual data. The last year of actual available crime data, as reported above, was 2025.

The FBI cautions the data users against comparing yearly statistical data solely on the basis of their population coverage. The comparisons made herein are thus, only meaningful upon further examination of all variables that affect crime in each reported city, state or other reported jurisdicition.