McGregor existed on the northeast side of the Fraser River 2.2 kilometres (1.4 mi) north-northwest of the Bowron River confluence. Positioned between Sinclair Mills and Upper Fraser, in central British Columbia, the previous community has since dispersed. McGregor, as well as the McGregor River, McGregor Range, Herrick River, Captain Creek and James Creek were named after Captain James Herrick McGregor (1869–1915), a Canadian soldier killed in action during World War I. As a partner in surveyors Gore and McGregor, he had undertaken extensive exploration and survey work in the area.