Lillooet is a district municipality in the Squamish-Lillooet region of southwestern British Columbia. The town is on the west shore of the Fraser River immediately north of the Seton River mouth. On BC Highway 99, the locality is by road about 100 kilometres (62 mi) northeast of Pemberton, 64 kilometres (40 mi) northwest of Lytton, and 172 kilometres (107 mi) west of Kamloops.

The Squamish-Lillooet Regional District is a quasi-municipal administrative area in British Columbia, Canada. It stretches from Britannia Beach in the south to Pavilion in the north. Lillooet, Pemberton, Whistler and Squamish are the four municipalities in the regional district. Its administrative offices are in the Village of Pemberton, although the district municipalities of Squamish and Whistler are larger population centres. The district covers 16,353.68 km2 of land area.