Hawaii was annexed by the United States in 1898; the key legal step was the Newlands Resolution, signed on July 7, 1898, with formal transfer ceremonies in Honolulu on August 12, 1898.

Since you asked in a blog/SEO style, here’s a compact, reader-friendly version that still keeps things short.

Quick Scoop: When was Hawaii annexed?

  • The U.S. annexed Hawaii in 1898.
  • Congress passed the Newlands Resolution and President William McKinley signed it on July 7, 1898.
  • The official ceremony transferring sovereignty took place in Honolulu on August 12, 1898.

So if you’re answering “when was Hawaii annexed,” the common short answer is 1898 , often specified as July 7, 1898 (legal annexation) or August 12, 1898 (formal transfer).

TL;DR: Hawaii was annexed by the United States in 1898, via the Newlands Resolution on July 7, with formal transfer on August 12.

Information gathered from public forums or data available on the internet and portrayed here.