Tenniken is a municipality in the district of Sissach in the canton of Basel-Country in Switzerland.

Tenniken has an area, as of 2009[update], of 4.66 square kilometers (1.80 sq mi).

Of the rest of the land, 0.53 km2 (0.20 sq mi) or 11.4% is settled (buildings or roads).

[7] Most of the population (as of 2000[update]) speaks German (875 or 97.2%), with Spanish being second most common (8 or 0.9%) and French being third (4 or 0.4%).

[8] As of 2008[update], the gender distribution of the population was 47.9% male and 52.1% female.

[6] The age distribution, as of 2010[update], in Tenniken is; 56 children or 6.3% of the population are between 0 and 6 years old and 117 teenagers or 13.2% are between 7 and 19.

The greatest number of single family homes (47) were built between 1971 and 1980.

[7] The historical population is given in the following chart:[12] In the 2007 federal election the most popular party was the SVP which received 27.67% of the vote.

In the federal election, a total of 331 votes were cast, and the voter turnout was 48.0%.

[7] There were 523 residents of the municipality who were employed in some capacity, of which females made up 41.5% of the workforce.

The number of jobs in the secondary sector was 202, of which 194 or (96.0%) were in manufacturing and 2 (1.0%) were in construction.

In the tertiary sector; 25 or 30.9% were in wholesale or retail sales or the repair of motor vehicles, 1 or 1.2% were in the movement and storage of goods, 2 or 2.5% were in a hotel or restaurant, 37 or 45.7% were technical professionals or scientists, 6 or 7.4% were in education.

[14] Grovana Watch, a global supplier of wristwatches, is one of the largest employers in the town, with 35 full-time employees.

[7] From the 2000 census[update], 121 or 13.4% were Roman Catholic, while 583 or 64.8% belonged to the Swiss Reformed Church.