Erlenbach im Simmental has an area of 36.69 km² (14.17 sq mi).
 As of 2012, a total of 18.56 km² (7.17 sq mi) or 50.5% is used for agricultural purposes, while 13.93 km² (5.38 sq mi) or 37.9% is forested.
  The rest of the municipality is 1.27 km² (0.49 sq mi) or 3.5% is settled (buildings or roads), 0.32 km² (0.12 sq mi) or 0.9% is either rivers or lakes and 2.6 km² (1.0 sq mi) or 7.1% is unproductive land.

During the same year, housing and buildings made up 1.5% and transportation infrastructure made up 1.4%.
 A total of 32.3% of the total land area is heavily forested and 5.3% is covered with orchards or small clusters of trees.
 Of the agricultural land, 16.2% is pasturage and 33.3% is used for alpine pastures.
 Of the water in the municipality, 0.6% is in lakes and 0.3% is in rivers and streams.
 Of the unproductive areas, 3.3% is unproductive vegetation and 3.7% is too rocky for vegetation.

The municipality includes the farming settlements (Bäuerten) of Erlenbach, Latterbach and Ringoldingen in the valley.
 On a terrace above the valley are the Bäuerten of Balzenberg, Eschlen, Thal and Allmenden.
 Above them are alpine meadows, woods and mountains.

On 31 December 2009 Amtsbezirk Niedersimmental, the municipality's former district, was dissolved.
 On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Frutigen-Niedersimmental.
Erlenbach im Simmental has an area of 36.69 km² (14.17 sq mi).  As of 2012, a total of 18.56 km² (7.17 sq mi) or 50.5% is used for agricultural purposes, while 13.93 km² (5.38 sq mi) or 37.9% is forested.   The rest of the municipality is 1.27 km² (0.49 sq mi) or 3.5% is settled (buildings or roads), 0.32 km² (0.12 sq mi) or 0.9% is either rivers or lakes and 2.6 km² (1.0 sq mi) or 7.1% is unproductive land.
During the same year, housing and buildings made up 1.5% and transportation infrastructure made up 1.4%.  A total of 32.3% of the total land area is heavily forested and 5.3% is covered with orchards or small clusters of trees.  Of the agricultural land, 16.2% is pasturage and 33.3% is used for alpine pastures.  Of the water in the municipality, 0.6% is in lakes and 0.3% is in rivers and streams.  Of the unproductive areas, 3.3% is unproductive vegetation and 3.7% is too rocky for vegetation.
The municipality includes the farming settlements (Bäuerten) of Erlenbach, Latterbach and Ringoldingen in the valley.  On a terrace above the valley are the Bäuerten of Balzenberg, Eschlen, Thal and Allmenden.  Above them are alpine meadows, woods and mountains.
On 31 December 2009 Amtsbezirk Niedersimmental, the municipality's former district, was dissolved.  On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Frutigen-Niedersimmental.
Erlenbach im Simmental