Orpund has an area of 3.97 km² (1.53 sq mi).
 As of 2012, a total of 1.55 km² (0.60 sq mi) or 39.1% is used for agricultural purposes, while 1.48 km² (0.57 sq mi) or 37.4% is forested.
  Of the rest of the land, 0.82 km² (0.32 sq mi) or 20.7% is settled (buildings or roads), 0.09 km² (22 acres) or 2.3% is either rivers or lakes and 0.01 km² (2.5 acres) or 0.3% is unproductive land.

During the same year, industrial buildings made up 1.8% of the total area while housing and buildings made up 14.9% and transportation infrastructure made up 3.0%.
 Out of the forested land, all of the forested land area is covered with heavy forests.
 Of the agricultural land, 30.6% is used for growing crops and  7.1% is pastures, while 1.5% is used for orchards or vine crops.
 All the water in the municipality is flowing water.

Orpund is located on the left bank of the Nidau-Büren channel.
 It includes the village of Orpund, the site of the former Gottstatt Monastery and the hamlet Zihlwil.

On 31 December 2009 Amtsbezirk Nidau, the municipality's former district, was dissolved.
 On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Biel/Bienne.
Orpund has an area of 3.97 km² (1.53 sq mi).  As of 2012, a total of 1.55 km² (0.60 sq mi) or 39.1% is used for agricultural purposes, while 1.48 km² (0.57 sq mi) or 37.4% is forested.   Of the rest of the land, 0.82 km² (0.32 sq mi) or 20.7% is settled (buildings or roads), 0.09 km² (22 acres) or 2.3% is either rivers or lakes and 0.01 km² (2.5 acres) or 0.3% is unproductive land.
During the same year, industrial buildings made up 1.8% of the total area while housing and buildings made up 14.9% and transportation infrastructure made up 3.0%.  Out of the forested land, all of the forested land area is covered with heavy forests.  Of the agricultural land, 30.6% is used for growing crops and  7.1% is pastures, while 1.5% is used for orchards or vine crops.  All the water in the municipality is flowing water.
Orpund is located on the left bank of the Nidau-Büren channel.  It includes the village of Orpund, the site of the former Gottstatt Monastery and the hamlet Zihlwil.
On 31 December 2009 Amtsbezirk Nidau, the municipality's former district, was dissolved.  On the following day, 1 January 2010, it joined the newly created Verwaltungskreis Biel/Bienne.
Orpund