All bill posting and advertising companies displaying advertisements in public places, including streetcars, and each person engaged in the business of advertising or bill posting shall pay the following license taxes: In counties having 200,000 inhabitants or over, $150; in counties of less than 200,000 inhabitants and as many as 100,000 inhabitants, $125; in counties of less than 100,000 inhabitants and as many as 75,000 inhabitants, $100; in counties of less than 75,000 inhabitants and as many as 50,000 inhabitants, $50; in counties of less than 50,000 inhabitants and as many as 30,000 inhabitants, $25; in counties of less than 30,000 inhabitants, $15.