Deli Tua is a town and administrative district located in the Deli Serdang Regency of North Sumatra province, Indonesia. It covers a total area of 9.36 km² and serves as an effective suburb situated immediately south of Medan city.
The district consists of six administrative divisions, categorized as three villages (desa) and three urban villages (kelurahan), all sharing the postcode 20355. As of the mid-2024 official estimates, the population of Deli Tua is approximately 62,274, consisting of 31,286 males and 30,988 females.