A man and a teenager have been charged following the alleged armed robbery of a service station at East Toowoomba overnight.

It will be alleged around midnight two males entered the Cohoe Street business and threatened the console operator with a knife demanding cash.

A 21-year-old Wacol man has been charged with robbery in company and four counts of trespass. He is expected to appear at the Toowoomba Magistrates Court today.

A 16-year-old boy from the Helidon area has been charged with robbery in company, four counts of trespass and one count of wilful damage of police property. He will be dealt with under the provisions of the Youth Justice Act.