Zurich is around the same size as The Hague (Den Haag).

The Hague (Den Haag) (excluding the city's 15.68 sq km of water area) is approximately 82 sq km, while Zurich is approximately 88 sq km, making Zurich 7% larger than The Hague (Den Haag).
Tip: This to-scale comparison of The Hague (Den Haag) vs. Zurich uses the Mercator projection, which distorts the size of regions near the poles.