During the Edo period, the town layout as a castle town was improved by Toyouji ARIMA; place names such as Gofuku-machi, Imoji-machi, Kaji-machi, Koya-machi, etc. remain to this day, and towns divided during urban development which took place during the Edo period remain in the old urban area almost as they were.
江戸時代になると有馬豊氏によって城下町としての町割りが整備されたが、現在でも呉服町、鋳物師町、鍛冶町、紺屋町などはそのままの地名として残されており、旧市街地は江戸時代の町割りが殆どそのまま残っている。