Courrendlin has an area of 11.09 km² (4.28 sq mi).
 Of this area, 4.79 km² (1.85 sq mi) or 43.2% is used for agricultural purposes, while 4.4 km² (1.7 sq mi) or 39.7% is forested.
  Of the rest of the land, 1.67 km² (0.64 sq mi) or 15.1% is settled (buildings or roads), 0.1 km² (25 acres) or 0.9% is either rivers or lakes and 0.07 km² (17 acres) or 0.6% is unproductive land.

Of the built up area, industrial buildings made up 2.9% of the total area while housing and buildings made up 5.7% and transportation infrastructure made up 3.6%.
 Power and water infrastructure as well as other special developed areas made up 2.6% of the area  Out of the forested land, all of the forested land area is covered with heavy forests.
 Of the agricultural land, 25.5% is used for growing crops and  12.1% is pastures and 5.1% is used for alpine pastures.
 All the water in the municipality is flowing water.

The municipality is located in the Delemont district, on the Birs river as it flows out of Moutier canyon.
 It consists of the old linear village of Courrendlin on the right side of the river, the train station and newer housing developments on the left bank and the foundry complex of Choindez south of the village.
Courrendlin has an area of 11.09 km² (4.28 sq mi).  Of this area, 4.79 km² (1.85 sq mi) or 43.2% is used for agricultural purposes, while 4.4 km² (1.7 sq mi) or 39.7% is forested.   Of the rest of the land, 1.67 km² (0.64 sq mi) or 15.1% is settled (buildings or roads), 0.1 km² (25 acres) or 0.9% is either rivers or lakes and 0.07 km² (17 acres) or 0.6% is unproductive land.
Of the built up area, industrial buildings made up 2.9% of the total area while housing and buildings made up 5.7% and transportation infrastructure made up 3.6%.  Power and water infrastructure as well as other special developed areas made up 2.6% of the area  Out of the forested land, all of the forested land area is covered with heavy forests.  Of the agricultural land, 25.5% is used for growing crops and  12.1% is pastures and 5.1% is used for alpine pastures.  All the water in the municipality is flowing water.
The municipality is located in the Delemont district, on the Birs river as it flows out of Moutier canyon.  It consists of the old linear village of Courrendlin on the right side of the river, the train station and newer housing developments on the left bank and the foundry complex of Choindez south of the village.
Courrendlin