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Tebing Tinggi Deli or more commonly simply Tebing Tinggi is a city near the eastern coast of North Sumatra Province of Indonesia. It has an area of 38.44 km² and a population at the 2010 Census of 145,180, which grew to 172,838 at the 2020 Census; the official estimate as at mid 2023 was 178,914. Tebing Tinggi is an enclave within Serdang Bedagai Regency, which surrounds it on all sides, and contains a kecamatan (district) bordering the city which is also named Tebing Tinggi.