Oberwil (German pronunciation: [ˈoːbɐˌviːl]) is a municipality in the district of Arlesheim in the canton of Basel-Country in Switzerland.

[3] Oberwil has an area, as of 2009[update], of 7.88 square kilometers (3.04 sq mi).

[4] The municipality is located in the Arlesheim district, in the middle Leimen valley.

The blazon of the municipal coat of arms is Gules, a Pallet wavy Argent, in dexter a Sword and in sinister a Key of the same.

[8] Most of the population (as of 2000[update]) speaks German (8,184 or 87.4%), with English being second most common (233 or 2.5%) and French being third (191 or 2.0%).

The total Swiss population change in 2008 (from all sources, including moves across municipal borders) was a decrease of 96 and the non-Swiss population change was an increase of 125 people.

[7] The age distribution, as of 2010[update], in Oberwil is; 705 children or 6.8% of the population are between 0 and 6 years old and 1,409 teenagers or 13.5% are between 7 and 19.

The greatest number of single family homes (445) were built between 1971 and 1980.

[8] The historical population is given in the following chart:[3][12] In the 2011 federal election the most popular party was the SP which received 26.3% of the vote.

In the federal election, a total of 3,498 votes were cast, and the voter turnout was 48.5%.

[8] There were 4,704 residents of the municipality who were employed in some capacity, of which females made up 43.9% of the workforce.

The number of jobs in the secondary sector was 332, of which 130 or (39.2%) were in manufacturing and 202 (60.8%) were in construction.

In the tertiary sector; 580 or 29.0% were in wholesale or retail sales or the repair of motor vehicles, 265 or 13.3% were in the movement and storage of goods, 76 or 3.8% were in a hotel or restaurant, 61 or 3.1% were in the information industry, 57 or 2.9% were the insurance or financial industry, 177 or 8.9% were technical professionals or scientists, 194 or 9.7% were in education and 268 or 13.4% were in health care.

[8] From the 2000 census[update], 3,206 or 34.2% were Roman Catholic, while 3,396 or 36.3% belonged to the Swiss Reformed Church.