Stallikon is a municipality in the district of Affoltern in the canton of Zürich in Switzerland.

[3] The site of Baldern Castle lies within the municipal boundaries, on the Albis ridge.

There have been no significant archeological investigations of the site, and the date and reason it was abandoned is unknown.

Of the rest of the land, 8.8% is settled (buildings or roads) and the remainder (0.4%) is non-productive (rivers, glaciers or mountains).

The middle of the Reppisch valley is also part of the municipality and includes the village of Stallikon, the hamlets of Tägerst, Gamlikon and Sellenbüren and scattered individual houses.