[5] Tanza was formerly a strip of land incorporated for official purpose to the municipality of San Francisco de Malabon, now called General Trias.

In the mid-19th century, the Secularization movement that was largely centered in Santa Cruz de Malabón led by Pedro Pelaez.

It is bounded by Rosario to the North; General Trias to the east; Trece Martires and Naic to the south; and Manila Bay on the west.

The majority of the people of Tanza are Roman Catholic under the jurisdiction of the Diocese of Imus, but there has been fast growth of Protestant and other non-Catholic denominations in the town, including Iglesia ni Cristo, Baptist, Seventh-day Adventist, Jehovah's Witnesses, Members Church of God International, and the Church of Jesus Christ of Latter-day Saints.

Non-Abrahamic faiths include native-Tagalog Anitism, Animism, and within the local Indian and Chinese communities Hinduism, Buddhism, Taoism and Confucianism are followed.

A large number of people from farther provinces have migrated to Tanza, resulting in minor but significant usage of the Bicolano, Cebuano, Ilocano, Hiligaynon and Waray languages.

Tanza is eyed as a center of exponential growth for commerce, industry and service, strengthening its stature as one of the fastest growing municipalities in Cavite province.