The official blazon is "Vert, a sceptre fleury Or" (Norwegian: I grønt et gull liljesepter).

This means the arms have a green field (background) and the charge is a sceptre or mace with a Fleur-de-lis design at the top.

The charge has a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used.

The coat of arms was inspired by the old seal of the medieval Frostating assembly, where King Magnus VI the law-mender is sitting with a lily sceptre in his hand.

Several rock engraving sites can be found in the municipality, together with burial mounds from Viking times.

Norway's oldest court, Frostating, had its seat at Tinghaugen on the Frosta peninsula, near the medieval Logtun Church.

Agriculture makes up the largest business in Frosta, which is sometimes called "Trondheim's kitchen garden" due to the substantial production of vegetables, strawberries, and flowers.

[1] Frosta has a predominantly temperate oceanic climate/marine west coast climate (barely humid continental if 0 °C (32 °F) is used as winter threshold).

Frosta is sometimes nicknamed "Trondheim's kitchen garden" due to many farms with production of vegetables, as well as a good microclimate.

The municipal council (Kommunestyre) of Frosta is made up of 17 representatives that are elected to four year terms.