
Knonau is a municipality in the district of Affoltern in the canton of Zürich in Switzerland.
The following figures are for the whole municipality Knonau belongs to. The vacancy rate is 0.54%, 3% above the cantonal average (0.53 %). The municipal tax multiplier (Steuerfuss) is 116% (2026), 6% above the average of the canton's municipalities (109.3 %). A single person without children on a gross wage of CHF 100'000 pays CHF 10'005 a year in canton, municipality and personal tax in the municipality of Knonau (tax year 2026, without church, federal and wealth tax). On the mean of the municipalities weighted by residents it is CHF 9'686 in the canton and CHF 12'251 in Switzerland. Median taxable income of all taxpayers is CHF 62'200 (tax period 2022). The municipality has 2'515 residents (2025).
Sources: Swiss Federal Statistical Office (FSO), Swiss Federal Tax Administration (FTA).
3 apartments are currently listed to buy in Knonau on Homematch. The selection updates throughout the day as agencies publish new listings.
Flats and houses in the municipality of Knonau are offered for sale at a median of CHF 13'158 per m² of living space, the middle half between CHF 12'752 and CHF 13'310 (9 listings, as of 27 Oct 2026). These are asking prices from listings on Swiss portals, not prices paid and not a valuation.
Knonau is located in the canton of Zürich.
The municipal tax multiplier (Steuerfuss) in Knonau is 116% of the cantonal base tax (tax year 2026). Note: this is a multiplier of the cantonal income tax, not an effective tax rate, and it can only be compared within the same canton.
A single person without children on a gross wage of CHF 100'000 pays CHF 10'005 a year in canton, municipality and personal tax in the municipality of Knonau (tax year 2026, without church, federal and wealth tax). The amount holds for exactly this household and income and, unlike the tax multiplier, compares across cantons.
Annual mean 10.0°C with 1'362 mm of rain. Warmest in July (19.3°C), coldest in January (1.0°C). Station: Wädenswil, 485 m.
Sunshine
1'703 h
Precipitation
1'362 mm
Wädenswil · 485 m.a.s.l. · 1991–2020 normals · Source: MeteoSchweiz
Mean annual temperature at Zürich / Fluntern has risen by +2.2°C between the first 30 observed years (1864–1893) and the most recent (1996–2025).
Zürich / Fluntern · 556 m.a.s.l. · 1864–2025 · Source: MeteoSchweiz NBCN
Source: FSO
2.1 kmCHF 1'294'000.–
2.3 kmPrice on request
2.3 kmCHF 1'400'000.–
2.4 kmCHF 1'390'000.–
2.5 kmCHF 1'265'000.–
2.6 kmCHF 1'500'000.–
3.2 kmCHF 790'000.–