What is the postal code of Knonau?

The postal code of Knonau is 8934.

What is the tax rate in Knonau?

The municipal tax multiplier of Knonau is 116% (2026); canton ZH levies 95%.

How much tax do you pay in Knonau?

A single person without children pays about 11'706 CHF income tax in Knonau on 100'000 CHF gross income (federal, cantonal, municipal), rank 124 of 160 in canton ZH. Source: ESTV (2026).

How many residents does Knonau have?

Knonau has 2'515 residents (2025).

How many foreign residents live in Knonau?

Knonau has 490 foreign residents, a share of 19.48% (2025).

Switzerland · Canton ZH · Bezirk Affoltern

Knonau

8934

Relief © swisstopo · TINITALY · geoland.at · LGL · IGN · swissTLM3D · swissTLMRegio

Demographics

BFS · 2025

Women

1'259 50.1%

Men

1'256 49.9%

Children & youth (0–19)

631 25.1%

Swiss citizens

2'025 80.5%

Foreign residents

490 19.5%

Population density

389 pop./km²

0–19 · 631 · 25.1%20–64 · 1'478 · 58.8%65+ · 406 · 16.1%

Foreign residents 19.5%0%64.0%

Population change 2025: +49 (+2%) · 19 births · 8 deaths · net migration +37

STATPOP 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026 · swisstopo, retrieved 24.09.2026 · BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026

Vote results for Knonau

BFS

27.09.2026Popular Initiative 'For food security – through increased sustainable domestic production, more plant-based food and clean drinking water (Food Initiative)'Federal● Rejected · 27.5% YesDistrict Bezirk Affoltern: 25.4% Yes

26.2% YesNo 73.8%

27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Affoltern: 27.2% Yes

31.3% YesNo 68.7%

27.09.2026Patientinnen- und Patientengesetz und Gesundheitsgesetz (Änderung vom 30. März 2026; Gegenvorschlag zur Volksinitiative «Selbstbestimmung am Lebensende auch in Alters- und Pflegeheimen»)Cantonal ZH● Accepted · 68.1% YesDistrict Bezirk Affoltern: 65.8% Yes

60.2% YesNo 39.8%

27.09.2026Lehrpersonalgesetz (LPG) (Änderung vom 2. März 2026; Anpassung neu definierter Berufsauftrag)Cantonal ZH● Rejected · 40.8% YesDistrict Bezirk Affoltern: 32.4% Yes

24.8% YesNo 75.2%

14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Affoltern: 56.1% Yes

55.1% YesNo 44.9%

14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Affoltern: 45.3% Yes

45.6% YesNo 54.4%

14.06.2026Kantonale Volksinitiative «Stopp Prämien-Schock: Für eine automatische Entlastung bei den Krankenkassenprämien»Cantonal ZH● Accepted · 53.1% YesDistrict Bezirk Affoltern: 55.8% Yes

61.0% YesNo 39.0%

14.06.2026C. Stichfrage: Welche der beiden Vorlagen soll in Kraft treten, falls sowohl die kantonale Volksinitiative als auch der Gegenvorschlag des Kantonsrates angenommen werden?Cantonal ZH● Rejected · 41.1% YesDistrict Bezirk Affoltern: 33.0% Yes

32.5% YesNo 67.6%

14.06.2026B. Gegenvorschlag des KantonsratesCantonal ZH● Accepted · 54.3% YesDistrict Bezirk Affoltern: 59.8% Yes

58.1% YesNo 41.9%

14.06.2026A. Kantonale Volksinitiative «Bezahlbare Wohnungen schützen. Leerkündigungen stoppen (Wohnschutz-Initiative)»Cantonal ZH● Rejected · 42.7% YesDistrict Bezirk Affoltern: 34.1% Yes

35.1% YesNo 64.9%

All federal votes →

Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023

SVP31.7% · strongest party

SVP31.7%

SP15.4%

GLP14.5%

Mitte11.3%

FDP8.6%

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026

Taxes 2026

ESTV

Municipal tax multiplier116%

Cantonal tax multiplier95%

116%ZH range 71%128%

Tax rank 129 of 160 in canton Zurich

Tax burden

Single, 100'000 CHF gross income

11'706 CHF(11.7%)

Rank 124 of 160 in the canton · 249 of 2110 in Switzerland

Median canton 11'375 CHF · median Switzerland 15'290 CHF

Cheapest Zumikon 9'577 CHF · most expensive Bachs 12'273 CHF

Income tax as % of gross income

100'000 CHF:11'706 CHF(~11.7%)

KnonauCanton range ZurichSwitzerland median

Show data table

Gross income	Knonau	Zurich	Switzerland median
40'000	5.2%	4.2–5.5%	5.4%
50'000	6.4%	5.2–6.8%	7.8%
60'000	7.7%	6.2–8.1%	10.5%
70'000	8.8%	7.1–9.2%	11.9%
80'000	9.8%	8–10.3%	13.1%
90'000	10.6%	8.6–11.1%	14.1%
100'000	11.7%	9.6–12.3%	15.3%
110'000	12.7%	10.4–13.3%	16.3%
120'000	13.5%	11.1–14.1%	17.2%
130'000	14.2%	11.7–14.8%	18.1%
140'000	15%	12.5–15.7%	19%
150'000	15.8%	13.1–16.5%	19.7%
175'000	17.6%	14.7–18.4%	21.6%
200'000	19.3%	16.2–20.1%	23.2%
225'000	20.8%	17.5–21.6%	24.6%
250'000	22.2%	18.8–23.1%	25.8%
275'000	23.4%	19.8–24.3%	26.8%
300'000	24.3%	20.7–25.3%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202010.1 °C

Precipitation 1991–20201'193 mm

10.1 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

504 m

Mean elevation

454 m

Relief

90 m

Mean slope

6°

Flat share

50.0%

South-facing

11.3%

Above 2000 m

0.0%

Relief 90 m0 m3'847 m

Terrain figures cover the whole municipal territory (swisstopo swissALTIRegio) — not the settlement point. Slope and south-facing share are resolution-dependent and measured at 40 m.

swissALTIRegio 2026 · swisstopo, retrieved 28.08.2026

Solar potential

BFE

Roof potential

17.4 GWh/yr

Roofs + façades

23.2 GWh/yr

≈ households powered

3'900

Per inhabitant

6'918 kWh/yr

17 GWh/yr01'133 GWh/yr

BFE solar factsheet ↗

Modelled roof and façade potential from the BFE solar model — the electricity these surfaces could produce, not installed capacity or what the municipality actually generates today. The household figure divides the roof potential by 4'500 kWh per year, ElCom’s reference household (consumption profile H4, a 5-room apartment).

Swiss Federal Office of Energy (SFOE), retrieved 24.09.2026

Electricity

ElCom · 2027

Tariff H4

23.87 Rp./kWh

Energy

11.86 Rp./kWh

Grid usage

7.9 Rp./kWh

Levies + grid surcharge

2.46 Rp./kWh

23.87 Rp./kWh10.5645.88

Canton median 24.63 Rp./kWhSwiss median 26.53 Rp./kWh

Network operator Elektrizitätswerke des Kantons Zürich (EKZ)

ElCom tariff comparison ↗

How this is measured

Total household electricity price for ElCom consumption profile H4 — 4'500 kWh a year, a 5-room flat with electric stove and tumble dryer — standard product, excluding VAT, for the tariff year shown. Energy, grid usage, levies to public bodies and the federal grid surcharge are included. Canton and Swiss medians are ElCom's own published figures.

2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026

Health-insurance premiums

BAG · 2024

Premium regionRegion 3

Standard model, deductible 300544 CHF/mo

Ø premium in canton Zurich411 CHF/mo

Estimate Switzerland 2026465.3 CHF/mo

Compare health insurers in Knonau →Canton Zurich →Premiums explained →

Premiums are set per canton and premium region. This area lies in premium region 3 of canton Zurich. Shown is the average adult premium paid across the whole canton Zurich (2024, BAG) — a region-specific average is not available in the cantonal data.

2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026

Housing

BFS · ARE

Vacancy rate

0.46 %

Second homes

7.8 %

Avg. rooms

4.1

Dwellings

1'080

Built before 194613.1%

Built since 200143.9%

0.46 %0 %12 %

Vacancy rate from the BFS vacant-dwelling count (2025); building age and room count from the Buildings and Dwellings Statistics (2024). The average room count treats the ‘6 rooms or more’ class as 6, so it is a slight lower bound. The vacancy rate is volatile for small municipalities.

Buildings and Dwellings Statistics 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 24.09.2026 · Dwelling inventory and second-home share 2026 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Economy

BFS · 2024

Jobs

550

Workplaces

140

Services share

73.3 %

Jobs by sector: Primary 52 (9.5%) · Secondary 95 (17.3%) · Tertiary 403 (73.3%)

STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025

Farms

Organic share

19 %

Farmland

395 ha

Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM

Major centrePT 57 min · Car 36 min

AgglomerationPT 22 min · Car 17 min

Remoteness 71/160 in canton

National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0

BFS municipality number7

Websiteknonau.ch ↗

DistrictBezirk Affoltern

Wikidata · continuously updated, retrieved 24.09.2026

Where Knonau ranks

Largest municipalities2'515 #111 ZH · #838 CH Growing municipalities2% #20 ZH · #349 CH Shrinking municipalities2% #140 ZH · #1753 CH Jobs per resident0.22 #133 ZH · #1659 CH Families & children25.1% #3 ZH · #73 CH Age structure16.1% #143 ZH · #1887 CH Women share50.1% #72 ZH · #836 CH Foreign residents19.5% #90 ZH · #908 CH Population density389/km² #103 ZH · #627 CH Tax burden11'706 #127 ZH · #252 CH Taxes116% #129 ZH Warmest municipalities10.1 °C #11 ZH · #378 CH Sunniest municipalities41.2% #39 ZH · #1297 CH Rainiest municipalities1'193 mm #47 ZH · #707 CH Voter turnout64% #46 ZH · #261 CH Against Switzerland6.9% #123 ZH · #1351 CH Aligned with Switzerland93.1% #17 ZH · #77 CH SVP strongholds31.7% #121 ZH · #1165 CH SP strongholds15.4% #55 ZH · #902 CH Centre strongholds11.3% #13 ZH · #1078 CH FDP strongholds8.6% #115 ZH · #1533 CH GLP strongholds14.5% #18 ZH · #35 CH Green strongholds7% #69 ZH · #1087 CH Largest by area6.5 km² #99 ZH · #1327 CH Highest municipalities431 m #112 ZH · #1691 CH Second homes7.8% #61 ZH · #1666 CH Organic farming19% #56 ZH · #687 CH Best-connected municipalities57 min #87 ZH · #671 CH Remotest municipalities57 min #71 ZH · #1416 CH Highest peaks504 m #137 ZH · #1860 CH Highest-lying municipalities454 m #117 ZH · #1691 CH Greatest vertical range90 m #141 ZH · #1879 CH Steepest municipalities6° #85 ZH · #1387 CH Solar potential17 GWh #112 ZH · #1124 CH Solar potential per capita6'918 kWh #63 ZH · #1692 CH Cheapest electricity23.87 Rp./kWh #13 ZH · #97 CH Most expensive electricity23.87 Rp./kWh #38 ZH · #1901 CH

Postal codes (1)

swisstopo

8934

Knonau

Localities

swisstopo · 1

Knonau8934

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Knonau?: The postal code of Knonau is 8934.
What is the tax rate in Knonau?: The municipal tax multiplier of Knonau is 116% (2026); canton ZH levies 95%.
How much tax do you pay in Knonau?: A single person without children pays about 11'706 CHF income tax in Knonau on 100'000 CHF gross income (federal, cantonal, municipal), rank 124 of 160 in canton ZH. Source: ESTV (2026).
How many residents does Knonau have?: Knonau has 2'515 residents (2025).
How many foreign residents live in Knonau?: Knonau has 490 foreign residents, a share of 19.48% (2025).

Map

OpenStreetMap

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