Aim: The aim of this study was to evaluate the relationship of prisoners’ demographic features in 7 provinces of Iran with their crime type and level.

Materials and Methods: This descriptive study was performed in all 2200 newcomer prisoners of 7 great prisons of Iran (Zahedan, Urmia, Kermanshah, Karaj, Bandar Abbas, Yazd and Gorgan) during January and February 2009. The analysis of personal properties (age, level of education, unemployment, poverty and place of residence) of prisoners was done in the framework of structuralism and functionalism using SPSS 19 software.

Results: Increasing the age and level of education of prisoners was inversely related to crimes, especially theft, which was the most frequent among the crimes, and only a direct relation to fraud was observed. The amount of crime and its re-engagement with the level of education and income was inversely related and was directly related to urbanization and intercourse. Traffic accidents and accidents with urbanization had a direct relationship with the reverse and fraudulent and drug trafficking, as well as the history of their repetition with urbanization.

Conclusion: Demographic factors such as age, education, and low income play a significant role in committing crimes, especially robbery. Also, the location agent is also linked to crime types, so that drug addiction, drug trafficking and fraud and repeat offenders are more likely to occur in the city, and driving accidents and accidents and repeat offenses in villagers.