What is the postal code of Cologny?

The postal code of Cologny is 1223.

What is the tax rate in Cologny?

The municipal tax multiplier of Cologny is 25% (2026); canton GE levies 147.5%.

How much tax do you pay in Cologny?

A single person without children pays about 13'885 CHF income tax in Cologny on 100'000 CHF gross income (federal, cantonal, municipal), rank 1 of 45 in canton GE. Source: ESTV (2026).

How many residents does Cologny have?

Cologny has 6'147 residents (2025).

How many foreign residents live in Cologny?

Cologny has 2'263 foreign residents, a share of 36.81% (2025).

Switzerland · Canton GE

Cologny

1223

GE CANTON1223

Residents

6'147

Area

7.4 km²

Population density

827 pop./km²

Elevation

460 m a.s.l.

Tax multiplier

25%

Postal codes

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

Demographics

BFS · 2025

Women

3'263 53.1%

Men

2'884 46.9%

Children & youth (0–19)

1'437 23.4%

Swiss citizens

3'884 63.2%

Foreign residents

2'263 36.8%

Population density

827 pop./km²

0–19 · 1'437 · 23.4%20–64 · 3'419 · 55.6%65+ · 1'291 · 21.0%

Foreign residents 36.8%0%64.0%

STATPOP 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026 · swisstopo, retrieved 24.08.2026

Vote results for Cologny

BFS

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% Yes

59.0% YesNo 41.0%

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% Yes

35.1% YesNo 64.9%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

68.2% YesNo 31.8%

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% Yes

26.0% YesNo 74.0%

08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% Yes

35.6% YesNo 64.4%

08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% Yes

30.8% YesNo 69.2%

08.03.2026Bundesbeschluss über die schweizerische Währung und die Bargeldversorgung (Gegenvorschlag zur Bargeldinitiative)Federal● Accepted · 73.4% Yes

80.8% YesNo 19.2%

08.03.2026Volksinitiative «Ja zu einer unabhängigen, freien Schweizer Währung mit Münzen oder Banknoten (Bargeld ist Freiheit)»Federal● Rejected · 45.6% Yes

50.4% YesNo 49.6%

30.11.2025Volksinitiative «Für eine soziale Klimapolitik – steuerlich gerecht finanziert (Initiative für eine Zukunft)»Federal● Rejected · 21.7% Yes

11.4% YesNo 88.6%

30.11.2025Volksinitiative «Für eine engagierte Schweiz (Service-citoyen-Initiative)»Federal● Rejected · 15.9% Yes

9.9% YesNo 90.1%

All federal votes →

Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 31.08.2026

Politics

National Council election 2023

FDP40.5% · strongest party

FDP40.5%

SVP19.4%

Mitte8.3%

SP8.2%

GRÜNE7.2%

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 31.08.2026

Taxes 2026

ESTV

Municipal tax multiplier25%

Cantonal tax multiplier147.5%

25%GE range 25%51%

Tax rank 2 of 45 in canton Geneva

Tax burden

Single, 100'000 CHF gross income

13'885 CHF(13.9%)

Rank 1 of 45 in the canton · 803 of 2110 in Switzerland

Median canton 15'212 CHF · median Switzerland 15'290 CHF

Cheapest Cologny 13'885 CHF · most expensive Avully 15'914 CHF

Income tax as % of gross income

100'000 CHF:13'885 CHF(~13.9%)

ColognyCanton range GenevaSwitzerland median

Show data table

Gross income	Cologny	Geneva	Switzerland median
40'000	4.6%	4.6–5.3%	5.4%
50'000	6.8%	6.8–7.8%	7.8%
60'000	8.8%	8.8–10.1%	10.5%
70'000	10.4%	10.4–12%	11.9%
80'000	11.7%	11.7–13.4%	13.1%
90'000	12.7%	12.7–14.6%	14.1%
100'000	13.9%	13.9–15.9%	15.3%
110'000	14.9%	14.9–17.1%	16.3%
120'000	15.8%	15.8–18.1%	17.2%
130'000	16.6%	16.6–18.9%	18.1%
140'000	17.4%	17.4–19.8%	19%
150'000	18.1%	18.1–20.6%	19.7%
175'000	19.8%	19.8–22.4%	21.6%
200'000	21.3%	21.3–24%	23.2%
225'000	22.6%	22.6–25.5%	24.6%
250'000	23.8%	23.8–26.7%	25.8%
275'000	24.8%	24.8–27.8%	26.8%
300'000	25.6%	25.6–28.6%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202011 °C

Precipitation 1991–2020904 mm

11 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

487 m

Mean elevation

400 m

Relief

115 m

Mean slope

3.1°

Flat share

73.7%

South-facing

0.8%

Above 2000 m

0.0%

Relief 115 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

36.8 GWh/yr

Roofs + façades

45 GWh/yr

≈ households powered

8'200

37 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 31.08.2026

Electricity

ElCom · 2026

Tariff H4

24.88 Rp./kWh

Energy

9.67 Rp./kWh

Grid usage

9.88 Rp./kWh

Levies + grid surcharge

3.54 Rp./kWh

24.88 Rp./kWh9.6443.61

Canton median 24.88 Rp./kWhSwiss median 27.7 Rp./kWh

Network operator Services industriels de Genève

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.

2026 · Federal Electricity Commission (ElCom), retrieved 28.08.2026

Housing

BFS

Vacancy rate

0.98 %

Avg. rooms

Dwellings

2'766

Built before 194611.2%

Built since 200132.2%

0.98 %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 31.08.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026

Accessibility

ARE · NPVM

Major centrePT 29 min · Car 15 min

AgglomerationPT 29 min · Car 15 min

Remoteness 35/45 in canton

National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 28.08.2026

Municipality

Wikidata · CC0

Head of governmentAlexandre Bodmer

Websitecologny.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities6'147 #16 GE · #331 CH Families & children23.4% #19 GE · #255 CH Age structure21% #7 GE · #1050 CH Women share53.1% #4 GE · #36 CH Foreign residents36.8% #12 GE · #119 CH Population density827/km² #19 GE · #282 CH Tax burden13'885 #1 GE · #803 CH Taxes25% #2 GE Warmest municipalities11 °C #17 GE · #85 CH Sunniest municipalities46.8% #44 GE · #483 CH Rainiest municipalities904 mm #19 GE · #1937 CH Voter turnout55.5% #27 GE · #1014 CH Against Switzerland13% #38 GE · #1088 CH Aligned with Switzerland87% #3 GE · #419 CH SVP strongholds19.4% #11 GE · #1811 CH SP strongholds8.2% #41 GE · #1679 CH Centre strongholds8.3% #32 GE · #1410 CH FDP strongholds40.5% #1 GE · #18 CH GLP strongholds7.1% #21 GE · #739 CH Green strongholds7.2% #44 GE · #1063 CH Largest by area7.4 km² #12 GE · #1210 CH Highest municipalities460 m #4 GE · #1458 CH Remotest municipalities29 min #35 GE · #2041 CH Best-connected municipalities29 min #11 GE · #74 CH Highest peaks487 m #8 GE · #1927 CH Highest-lying municipalities400 m #33 GE · #1978 CH Greatest vertical range115 m #4 GE · #1761 CH Steepest municipalities3.1° #13 GE · #1896 CH Solar potential37 GWh #16 GE · #529 CH Cheapest electricity24.88 Rp./kWh #16 GE · #256 CH Most expensive electricity24.88 Rp./kWh #17 GE · #1838 CH

Postal codes (1)

swisstopo

1223

Cologny

Localities

swisstopo · 1

Cologny1223

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Cologny?: The postal code of Cologny is 1223.
What is the tax rate in Cologny?: The municipal tax multiplier of Cologny is 25% (2026); canton GE levies 147.5%.
How much tax do you pay in Cologny?: A single person without children pays about 13'885 CHF income tax in Cologny on 100'000 CHF gross income (federal, cantonal, municipal), rank 1 of 45 in canton GE. Source: ESTV (2026).
How many residents does Cologny have?: Cologny has 6'147 residents (2025).
How many foreign residents live in Cologny?: Cologny has 2'263 foreign residents, a share of 36.81% (2025).

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