In this article, results from self-report studies in two Finnish cities, Helsinki and Turku, are presented. The aims are to compare the prevalence of youth crime between these cities and changes in delinquency during the observation period. In Helsinki, the surveys took place in 1992, 2006 and 2013, and in Turku, the surveys took place in 1992, 2001, and 2013. With the exception of the Turku 2001 survey, all datasets have been collected under the auspices of the International Self-Report Delinquency Study (ISRD). The most recent survey, ISRD3, targeted comprehensive school pupils from grades 7 – 9 (ages 13 – 16), while some of the former studies excluded 7th and/or 8th grades. The results show that (1) the delinquency rates are generally higher in Helsinki than in Turku and (2) the prevalence of both property- and violence-related crimes has decreased, while drug use manifested fluctuating or increasing trends. Overall, the findings are consistent with the observation that there has been a relatively general crime drop in the Western world since the 1990s.