Oensingen

Oensingen has an area, as of 2009, of 12.07 square kilometers . Of this area, 4.79 km2 or 39.7% is used for agricultural purposes, while 4.49 km2 or 37.2% is forested. Of the rest of the land, 2.65 km2 or 22.0% is settled , 0.08 km2 or 0.7% is either rivers or lakes and 0.03 km2 or 0.2% is unproductive land.
Of the built up area, industrial buildings made up 4.6% of the total area while housing and buildings made up 8.4% and transportation infrastructure made up 6.1%. Power and water infrastructure as well as other special developed areas made up 2.2% of the area Out of the forested land, 36.1% of the total land area is heavily forested and 1.1% is covered with orchards or small clusters of trees. Of the agricultural land, 31.3% is used for growing crops and 6.7% is pastures and 1.2% is used for alpine pastures. All the water in the municipality is flowing water.

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