On 1 January 1888, the Krakken farm (population: 17) on the northeastern corner of the island of Sula was transferred from Hyllestad to the neighboring municipality of Utvær.

The official blazon is "Azure, three millstones in bend argent" (Norwegian: På blå grunn tre sølv kvernsteinar i skrå rekkje).

This means the arms have a blue field (background) and the charge is a set of three millstones lined up diagonally.

The charge has a tincture of argent which means it is commonly colored white, but if it is made out of metal, then silver is used.

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

The production of millstones in Hyllestad started over 1,000 years ago and used to be a major industry employing up to 1,000 people.

The park offers nature trails that visualize the history of the industry, with debris, broken product, and half-carved stones still not separated from the rock surface.

[35] Many bicyclists have described the well-preserved section of the Trondheim postal road between Hyllestad and Fjaler as one of the most exhilarating cycling experiences in the country.

There were originally 19 stone bridges on the route between the villages of Dale and Leirvik, and many of them are still standing as proud and impressive examples of early dry masonry.

There are only a few places along the 40 km (25 mi) stretch between Dale in Fjaler and Leirvik in Hyllestad where the surface is so uneven that it is best to push a bike rather than ride it.