Moleno has an area, as of 1997, of 7.49 square kilometers (2.89 sq mi).
 Of this area, 0.53 km² (0.20 sq mi) or 7.1% is used for agricultural purposes, while 5.94 km² (2.29 sq mi) or 79.3% is forested.
Of the rest of the land, 0.25 km² (0.097 sq mi) or 3.3% is settled (buildings or roads), 0.14 km² (35 acres) or 1.9% is either rivers or lakes and 0.57 km² (0.22 sq mi) or 7.6% is unproductive land.

Of the built up area, housing and buildings made up 0.9% and transportation infrastructure made up 2.0%.
Out of the forested land, 70.4% of the total land area is heavily forested and 1.2% is covered with orchards or small clusters of trees.
Of the agricultural land, 5.9% is used for growing crops.
All the water in the municipality is flowing water.
Of the unproductive areas, 4.7% is unproductive vegetation and 2.9% is too rocky for vegetation.

The municipality is located in the Bellinzona district, on the northern border of the district.
Moleno has an area, as of 1997, of 7.49 square kilometers (2.89 sq mi).  Of this area, 0.53 km² (0.20 sq mi) or 7.1% is used for agricultural purposes, while 5.94 km² (2.29 sq mi) or 79.3% is forested. Of the rest of the land, 0.25 km² (0.097 sq mi) or 3.3% is settled (buildings or roads), 0.14 km² (35 acres) or 1.9% is either rivers or lakes and 0.57 km² (0.22 sq mi) or 7.6% is unproductive land.
Of the built up area, housing and buildings made up 0.9% and transportation infrastructure made up 2.0%. Out of the forested land, 70.4% of the total land area is heavily forested and 1.2% is covered with orchards or small clusters of trees. Of the agricultural land, 5.9% is used for growing crops. All the water in the municipality is flowing water. Of the unproductive areas, 4.7% is unproductive vegetation and 2.9% is too rocky for vegetation.
The municipality is located in the Bellinzona district, on the northern border of the district.
Moleno