Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the total number of district for population may being 478

### Inputs:
table_name: table, columns: ['Barangay', 'District', 'Population (May 1, 2000)', 'Population (August 1, 2007)', 'Population (May 1, 2010)']

### Response:
SELECT COUNT District FROM table WHERE Population (May 1, 2010) = 478