user: Question: Name the number of county for 90 population
Columns: ['Township', 'County', 'Pop. (2010)', 'Land ( sqmi )', 'Water (sqmi)', 'Latitude', 'Longitude', 'GEO ID', 'ANSI code']
Types: ['text', 'text', 'real', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Haag', 'Logan', 25.0, '35.960', '0.000', '46.326595', '-99.100267', 3804734060.0, 1037182.0]
SQL:

assistant: SELECT COUNT("County") FROM "Table" WHERE "Pop. (2010)" = 90.0;