Population
17'973↑1.2%

City · Zürich
Illnau-Effretikon is a municipality in the district of Pfäffikon in the canton of Zürich in Switzerland. It includes the villages of Illnau, Effretikon, Ottikon and Bisikon. On 1 January 2016 Kyburg and Illnau-Effretikon merged to form the municipality of Illnau-Effretikon.
The rental vacancy rate is 0.98%, 103% above the cantonal average (0.48 %) — a comparatively relaxed market. The municipal tax multiplier (Steuerfuss) is 113%, 3% above the cantonal average (109 %). Median taxable income is CHF 60'800, roughly the Swiss average (CHF 61'929). Effretikon has 17'973 residents (2025).
Source: Swiss Federal Statistical Office (BFS).