Migration of people into South Wales was going on throughout the period 1851 to 1911 and altogether some 366,000 people moved into Glamorgan, Monmouthshire and Carmarthenshire between these dates. The peak of this migration occurred between 1901 and 1911 when 129,000 people moved into the area. Such was the incredible growth of South Wales at this time that it absorbed immigrants at a faster rate than anywhere in the world except the U. S. A.!
Up to the 1890s the majority of the people entering Glamorgan had come from other counties in Wales.
