Due to the development of manufacturing and food-processing industries, Yongkang has become a migrant city since the 1970s, attracting many people from neighboring cities who now work and live in the city. Its population experienced a large increase during the 1970s, and Yongkang became the largest city in Tainan County in 1977.
Yongkang was formerly the largest city of Tainan County until it merged with Tainan City to form the new Tainan municipality and became Yongkang District on 25 December 2010.
Though the increase in population today is not as rapid as it was before, Yongkang still enjoys the steady growth envied by other cities or towns.
Note: Hanyu Pinyin is the national standard and promulgated by the Ministry of Interior. Exceptions: "Tamsui" instead of "Danshui," cardinal direction districts, and names of special municipalities and provincial cities. ¹ — Mountain Indigenous District