[1] Although the U.S. Consulate in Sapporo was established after World War II, the history of U.S. consular offices in Hokkaido dates back to the late Edo period.

On March 31, 1854, following the signing of the Treaty of Kanagawa, relations between Japan and the United States were established.

Until the end of World War II, there was no U.S. consular presence in all of Hokkaido, including Hakodate.

[4] After World War II, the United States established the Sapporo Branch, Office of the U.S.

This office served as the predecessor of the U.S. Consulate in Sapporo and played a significant role in supporting the establishment of the local government system in Hokkaido.

[6] On April 28, 1952 (Shōwa 27), with the enforcement of the San Francisco Peace Treaty, Japan regained its independence.