It consists of the city of Niagara Falls and the towns of Niagara-on-the-Lake and Fort Erie.

It consisted initially of the townships of Stamford, Willoughby and Bertie, the city of Niagara Falls, and the towns of Fort Erie, Chippawa and Crystal Beach in the county of Welland.

In 1966, the towns of Fort Erie, Chippawa and Crystal Beach and the township of Stamford were excluded from the riding.

In 1996, the riding was expanded to include the part of the City of Thorold lying east of the Welland Canal.

Ethnic groups: 79.2% White, 4.6% South Asian, 3.9% Indigenous, 2.6% Black, 2.2% Chinese, 2.3% Filipino, 1.6% Latin American Languages: 77.7% English, 2.6% Italian, 1.6% French, 1.4% Spanish, 1.1% Tagalog, 1.1% German, 1.0% Mandarin Religions: 60.9% Christian (30.6% Catholic, 5.8% Anglican, 4.0% United Church, 2.0% Presbyterian, 2.0% Christian Orthodox, 1.5% Lutheran, 1.1% Baptist, 1.0% Pentecostal, 1.0% Anabaptist, 11.9% Other), 2.9% Muslim, 1.5% Hindu, 32.2% None.