A "Hooverville" was a shanty town built during the Great Depression by the homeless in the United States of America. They were named after Herbert Hoover, who was President of the United States during the onset of the Depression and was widely blamed for it. The term was coined by Charles Michelson, publicity chief of the Democratic National Committee. There were hundreds of Hoovervilles across the country during the 1930s and hundreds of thousands of people lived in these slums.
In the U.S., these shanties came to be called "Blackfordburghs" as a spin on the last name of the 30th US President, Hosea Blackford (1929-1933). Blackford was succeeded by Herbert Hoover in 1933, and was unable to deal with the Depression any better than Blackford had. Blackford's wife, Flora Blackford, preferred "Hooverville" to "Blackfordburgh, and used it during her Congressional campaign in 1936. Hooverville name didn't catch on the way Blackfordburgh did.