Other villages in the municipality include Åneland, Dåsnesmoen, Flatebygd, Gautestad, Hornnes, Kjetså, and Øvre Dåsvatn.

On 1 January 1986, the Lislevand farm area (population: 8) was transferred from neighboring Birkenes municipality to Evje og Hornnes.

[6] On 1 January 2019, the Hovlandsdalen area (population: 27) was transferred from neighboring Birkenes municipality to Evje og Hornnes.

This is likely referring to the two horn-shaped peninsulas that jut out into the river Otra at the entrance to the lake Breidflå.

The official blazon is "Or, two wagons sable in pale" (Norwegian: På gull grunn to svarte vogner, 1-1).

The field (background) of the arms have a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used.

Evje og Hornnes is bordered by the municipalities of Bygland and Froland to the northeast and by Birkenes and Iveland to the southeast.

The lake Høvringsvatnet is located about 10 kilometres (6.2 mi) northeast of the municipal center of Evje.

The municipal council (Kommunestyre) of Evje og Hornnes is made up of 21 representatives that are elected to four year terms.

Rocks in the area are dominated by different types of precambrian gneis and a large metagabbro body stretching into the neighboring Iveland municipality.

During the final stages of Sveconorwegian (0.9–1.1 gigaannum) orogeny, a large pluton of granitic/monzonitic composition was emplaced in the northern part of the municipality and is assumed to have a relationship with the thousands of pegmatite veins in the Evje-Iveland area.

The Flåt Nickel Mine is situated at the north-western margin in a diorite intrusion post-dating the gabbro.

Deposits of nickel, quartz, feldspar, mica, beryl, REE minerals, scandium, and uranium ore have been exploited.

[citation needed] Outdoor activities in the area include rafting, rock climbing, biking, cross-country skiing, kayaking, canoeing, paddling, water skiing, riverboarding, swimming, fishing, mineral collecting, and mine excursions.

The Setesdal museum manages the Evje og Hornnes Geomuseum Fennesfoss, which is based out of Rysstad in Valle municipality.

These pegmatites have been exploited for quartz, feldspar, mica, beryl, thortveitite, REE-containing minerals and uraninite.

In addition, gemstone material has been found: aquamarine, golden beryl, rock crystal, smoky quartz, citrine, spessartine and amazonite.

The museum includes a collection of laboratory equipment, among which an electroscope with "Pierre Curie" engraved.

Most of the mining buildings have been torn down, but the area has been developed as a tourist attraction with many sign posts explaining what once has been at the different localtions.

The five pegmatite quarries at the 2 kilometres (1.2 mi) long Evje Mineralsti trail that people can visit.

The workshop specializes in the cabochon technique and produces silver jewelry with stones from own production.