Jabarkan Tokoh penting dari Portland, Oregon

Ashkelon, Southern District, Israel (1987)

Khabarovsk, Khabarovsk Krai,  Russia (1988)

Portland juga memiliki perjanjian kota persahabatan dengan:

Daftar rumah sakit di Portland, Oregon

Daftar tempat olahraga di Portland, Oregon

Keuskupan Agung Katolik Roma Portland di Oregon

Abbott, Carl.  Portland in Three Centuries: The Place and the People (Oregon State University Press; 2011) 192 pages; scholarly history online

Abbott, Carl.  Portland : gateway to the Northwest (1985) online