Kölliken

Kölliken
Kölliken village Protestant church
Coat of arms
Kölliken Show map of Switzerland Kölliken Show map of Canton of Aargau
Location of Kölliken
Coordinates: 47°20′N 8°1′E / 47.333°N 8.017°E / 47.333; 8.017Coordinates: 47°20′N 8°1′E / 47.333°N 8.017°E / 47.333; 8.017
Country	Switzerland
Canton	Aargau
District	Zofingen
Area
• Total	8.89 km2 (3.43 sq mi)
Elevation	430 m (1,410 ft)
Population (Dec 2015)
• Total	4,272
• Density	480/km2 (1,200/sq mi)
Postal code	5742
SFOS number	4276
Surrounded by	Gretzenbach (SO), Holziken, Muhen, Oberentfelden, Safenwil, Uerkheim
Website	www.koelliken.ch SFSO statistics

Kölliken is a municipality in the district of Zofingen in the canton of Aargau in Switzerland. It is also home to one of the two most toxic hazardous waste landfills in all of Switzerland. The other site is in Bonfol, Canton Jura.

Kölliken is first mentioned in 924 as Cholinchove.

Kölliken has an area, as of 2009^[update], of 8.89 square kilometers (3.43 sq mi). Of this area, 2.92 km² (1.13 sq mi) or 32.8% is used for agricultural purposes, while 3.85 km² (1.49 sq mi) or 43.3% is forested. Of the rest of the land, 2.04 km² (0.79 sq mi) or 22.9% is settled (buildings or roads), 0.02 km² (4.9 acres) or 0.2% is either rivers or lakes and 0.01 km² (2.5 acres) or 0.1% is unproductive land.

Of the built up area, industrial buildings made up 1.7% of the total area while housing and buildings made up 11.8% and transportation infrastructure made up 6.9%. Power and water infrastructure as well as other special developed areas made up 2.0% of the area Out of the forested land, 42.0% of the total land area is heavily forested and 1.3% is covered with orchards or small clusters of trees. Of the agricultural land, 21.9% is used for growing crops and 9.6% is pastures, while 1.3% is used for orchards or vine crops. All the water in the municipality is flowing water.

The municipality is located in the Zofingen district, along Kölliker creek on the western edge of the lower Uerkental. It consists of the linear village of Kölliken.

The blazon of the municipal coat of arms is Argent a Bear paw Sable armed of the first issuant from sinister holding a Pine tree Vert issuant from Coupeaux of the same.

Kölliken has a population (as of December 2015^[update]) of 4,272 As of June 2009^[update], 15.5% of the population are foreign nationals. Over the last 10 years (1997–2007) the population has changed at a rate of 6.1%. Most of the population (as of 2000^[update]) speaks German(91.7%), with Italian being second most common ( 2.7%) and Albanian being third ( 2.2%).