Frenkendorf is a municipality in the district of Liestal in the canton of Basel-Country in Switzerland.

[3] Frenkendorf has an area, as of 2009[update], of 4.6 square kilometers (1.8 sq mi).

The old village center is located on a terrace above the Ergolz valley.

After 1854, the settlement of Neu-Frenkendorf grew up in the valley along the Basel-Olten railway line.

The blazon of the municipal coat of arms is Azure, Moon Argent.

[8] Most of the population (as of 2000[update]) speaks German (4,817 or 84.5%), with Italian language being second most common (308 or 5.4%) and Turkish being third (108 or 1.9%).

[7] The age distribution, as of 2010[update], in Frenkendorf is; 404 children or 6.6% of the population are between 0 and 6 years old and 893 teenagers or 14.7% are between 7 and 19.

[8] The historical population is given in the following chart:[3][13] The Villa Sacher, with its collection of modern art, was listed as a heritage site of national significance in 1995, but no longer appears on the list.

In the 2007 federal election the most popular party was the SP which received 31.8% of the vote.

In the federal election, a total of 1,694 votes were cast, and the voter turnout was 46.0%.

[8] There were 3,112 residents of the municipality who were employed in some capacity, of which females made up 45.1% of the workforce.

In the tertiary sector; 400 or 40.5% were in wholesale or retail sales or the repair of motor vehicles, 89 or 9.0% were in the movement and storage of goods, 53 or 5.4% were in a hotel or restaurant, 21 or 2.1% were in the information industry, 1 or 0.1% were the insurance or financial industry, 41 or 4.1% were technical professionals or scientists, 96 or 9.7% were in education and 76 or 7.7% were in health care.

[8] From the 2000 census[update], 1,633 or 28.6% were Roman Catholic, while 2,534 or 44.4% belonged to the Swiss Reformed Church.

[9] Frenkendorf sits on the Hauenstein line and is served by trains at Frenkendorf-Füllinsdorf railway station.

[17] In 2014 the crime rate, of the over 200 crimes listed in the Swiss Criminal Code (running from murder, robbery and assault to accepting bribes and election fraud), in Frenkendorf was 50 per thousand residents, slightly lower than the national average (64.6 per thousand).

The rate of violations of immigration, visa and work permit laws was 1.4 per thousand residents.