A national bank may be organized by not less than five persons anywhere in the United States, subject to the following requirements as to capital and population.

1. With not less than $25,000 capital in any place having 6,000 inhabitants or less.

2. With not less than $50,000 capital in any city having 6,000 inhabitants or less.

3. With not less than $100,000 capital in any city having over 6,000 but not more than 50,000 inhabitants.

4. With not less than $200,000 capital in any city having over 50,000 inhabitants.