Police said the 19-year-old delivery driver stopped his car on Myuna Way in Mangerton about 8.30pm to deliver pizzas.

As he approached the address and walked to the top of the stairs, he was approached by two men, one armed with a metal pole resembling a baseball bat.

The men demanded the pizzas and the driver's wallet and phone, and then ran from the scene with four other men who were waiting just out of view.

The man armed with the metal pole was described as Caucasian, aged between 20 and 30, about 180 centimetres tall and of medium build. He wore a blue hoodie, a white bandanna over his face, dark pants and light-coloured gloves, and he spoke with an ethnic accent.

The second man was between 20 and 30 with a skinny build and about 170 centimetres tall. He wore a dark hoodie and a bandanna, and had long, brown curly hair.

Detectives from Wollongong Local Area Command would like to speak with anyone who can help.

Just after the Mangerton robbery, about 9.35pm, three men - one armed with a knife - entered a Kanahooka convenience store.

The men went behind the counter of the Lakeside Drive shop and threatened the male worker, 23, demanding money and cigarettes.

The employee was not injured.

The men were described as being in their late teens or early 20s, with light olive skin.