Zwingen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland. Zwingen has an area, as of 2009, of 4.62 squ…Zwingen is a municipality in the district of Laufen in the canton of Basel-Country in Switzerland. Zwingen has an area, as of 2009, of 4.62 square kilometers. Of this area, 1.54 km² or 33.3% is used for agricultural purposes, while 1.76 km² or 38.1% is forested. Of the rest of the land, 1.18 km² or 25.5% is settled, 0.12 km² or 2.6% is either rivers or lakes and 0.01 km² or 0.2% is unproductive land.