Cainta, officially the Municipality of Cainta, (Tagalog: Bayan ng Cainta IPA: [kaʔɪntɐ]), is a highly-urbanized 1st class municipality in the province of Rizal, Philippines. According to the 2015 census, it has a population of 322,128 people.It is one of the oldest municipalities in Luzon (founded on August 15, 1571), and has a land area of 4,299 hectares (10,620 acres). Cainta serves as the secondary gateway to the rest of Rizal province from Metro Manila. With the continuous expansion of Metro Manila, Cainta is now part of Manila's conurbation, which reaches Cardona in its easternmost part, and is therefore one of the most urbanized towns. According to the 2015 census, it has a population of 322,128 people, making it the second most populous municipality in the Philippines (after Rodriguez, Rizal), although there are efforts underway to convert it into a city. Its total assets amounting to Php 3,988,392,142.17 (as per 2017 Commission on Audit summary) makes it the richest municipality in the country. Cainta faces different challenges especially with its boundary disputes with Pasig (Greenpark Village, Karangalan Village, St. Joseph Subdivision, Villarica Subdivision, Riverside, and Midtown Village), Taytay (Greenland and eastern part of Cainta), and Antipolo (Valley Golf and Country Club, Valley View, and Palmera Heights)

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