Show the county name and population of all counties.
SELECT County_name ,  Population FROM county
SELECT County_name ,  Population FROM county
[{'County_name': 'Howard', 'Population': 21000.0}, {'County_name': 'Baltimore County', 'Population': 90000.0}, {'County_name': 'Colony', 'Population': 79000.0}, {'County_name': 'Mansfield', 'Population': 87200.0}, {'County_name': 'Manning', 'Population': 13300.0}]