[1] After World War II, Yap became a part of the United States Trust Territory of the Pacific Islands.

[2] Today, traditional Yapese culture is taught in elementary and junior high schools in the course "Practical Art/Culture".

A survey conducted in 2010 showed significant interest in preserving and handing down traditional Yapese culture.

[3] Before World War II, Yap faced critical depopulation from contact with European diseases and cultural abortion.

[5] A 2012 survey of Micronesians outside the FSM that there were 258 Yapese in the Northern Mariana Islands,[6]: 10  412 in Guam,[6]: 44  72 in Hawaii,[6]: 82  and 865 in the contiguous United States.

[8]: 7–8 Traditional clothing on the main island of Yap includes loincloths and hibiscus fiber for the men and grass skirts for the women.

[10]: 19–23 A Yapese estate includes several households living on land owned by a single house site.

He found that the Yapese did not view human pregnancy as a result of copulation, but rather as a bestowal from one's ancestors for good behavior.

[12] Thomas Helmig disputed Schneider's conclusions regarding the link between coitus and pregnancy on Yap.

[13] Strong sexual taboos on Yap prohibit incest, which is viewed as one of the worst offences one can commit.

[15]: 31–32  Common food grown in Yap include taro, yams, breadfruit, bananas, and reef fish.

[16] Chewing betel nut, drinking palm wine, and consuming commercial alcohol are popular social activities on Yap.

[17][18] The United States gave large subsidies to Micronesia in the 20th century, creating a decline in local food production on Yap.