Bennwil is a municipality in the district of Waldenburg in the canton of Basel-Country in Switzerland.

[3] Bennwil has an area, as of 2009[update], of 6.51 square kilometers (2.51 sq mi).

Of the rest of the land, 0.36 km2 (0.14 sq mi) or 5.5% is settled (buildings or roads), 0.03 km2 (7.4 acres) or 0.5% is either rivers or lakes.

[4] The municipality is located in the Waldenburg district, in the Bennwilerbach or Walibach valley.

It consists of the linear village of Bennwil and about 24 individual farm houses.

[8] Most of the population (as of 2000[update]) speaks German (580 or 96.2%), with Serbo-Croatian being second most common (9 or 1.5%) and English being third (6 or 1.0%).

[7] The age distribution, as of 2010[update], in Bennwil is; 67 children or 10.6% of the population are between 0 and 6 years old and 86 teenagers or 13.6% are between 7 and 19.

[8] The historical population is given in the following chart:[3][13] The neolithic settlement at Ötschberg is listed as a Swiss heritage site of national significance.

The entire village of Bennwil is part of the Inventory of Swiss Heritage Sites.

In the federal election, a total of 240 votes were cast, and the voter turnout was 52.1%.

[8] There were 331 residents of the municipality who were employed in some capacity, of which females made up 42.0% of the workforce.

The number of jobs in the primary sector was 44, of which 36 were in agriculture and 8 were in forestry or lumber production.

In the tertiary sector; 1 or 4.5% were in wholesale or retail sales or the repair of motor vehicles, 3 or 13.6% were in a hotel or restaurant, 2 or 9.1% were in the information industry, 3 or 13.6% were technical professionals or scientists, 5 or 22.7% were in education.

[8] From the 2000 census[update], 69 or 11.4% were Roman Catholic, while 441 or 73.1% belonged to the Swiss Reformed Church.