As o 2010, the ceety haes an estimatitpopulation o 388,633 an apopulation densitie o 10,680 persons per km². The total aurie is 36.38 km². Its peak population wis ower 420,000.
Toyonaka is a residential aurie o Osaka Prefectur, an includesSenri New Town.
The ceety is easy tae reach through various modes o transportation, an mony o its residents commute daily intae Osaka Ceety tae wirk.Osaka University an Osaka Music College hae their campuses in Toyonaka.
Frae auncient times until the day Toyonaka haes haed a sizable population. The events incitin theJōkyū War wur relatit tae an event in Toyonaka.A case on a matter atween a favorite lady o the retired emperorEmperor Go-Toba an a localjitō wis wrangly resolvitd, an then the umwhile haed the Emperor redecide the case in her favor.