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

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

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%

Population change 2025: +120 (+2%) · 65 births · 52 deaths · net migration +131

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 Cologny

BFS

26.7% YesNo 73.3%

27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% Yes

35.5% YesNo 64.5%

27.09.2026Loi 13579 indemnité à la Haute école spécialisée de Suisse occidentale – GenèveCantonal GE● Rejected · 41.5% Yes

58.7% YesNo 41.3%

27.09.2026Loi 13025 LDTR pour que les locataires puissent devenir, s’ils le souhaitent, propriétaires de leur propre logementCantonal GE● Rejected · 36.5% Yes

51.1% YesNo 48.9%

27.09.2026Loi 13725 crédit de 39 500 000 francs pour la réalisation de projets transfrontaliersCantonal GE● Accepted · 56.8% Yes

57.9% YesNo 42.1%

27.09.2026IN 198 « Pour une contraception gratuite »Cantonal GE● Accepted · 58.5% Yes

42.9% YesNo 57.1%

14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% Yes

59.0% YesNo 41.0%

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

35.1% YesNo 64.9%

14.06.2026Loi sur les heures d'ouverture des magasins (LHOM) (Ouverture du dimanche)Cantonal GE● Accepted · 52.8% Yes

74.9% YesNo 25.1%

14.06.2026Loi pour une expression non ostentatoire des convictions religieusesCantonal GE● Accepted · 51.4% Yes

69.0% YesNo 31.0%

All federal votes →

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

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 25.09.2026

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 24.09.2026

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

Per inhabitant

5'990 kWh/yr

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 24.09.2026

Electricity

ElCom · 2027

Tariff H4

24.43 Rp./kWh

Energy

9.33 Rp./kWh

Grid usage

9.78 Rp./kWh

Levies + grid surcharge

3.54 Rp./kWh

24.43 Rp./kWh10.5645.88

Canton median 24.43 Rp./kWhSwiss median 26.53 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.

2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026

Health-insurance premiums

BAG · 2024

Standard model, deductible 300752 CHF/mo

Ø premium in canton Geneva539 CHF/mo

Estimate Switzerland 2026465.3 CHF/mo

Compare health insurers in Cologny →Canton Geneva →Premiums explained →

Premiums are set not per municipality but per canton and premium region. Shown is the average adult premium paid in canton Geneva (2024, BAG) — it applies canton-wide, not to any single location.

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

Housing

BFS · ARE

Vacancy rate

0.98 %

Second homes

19.2 %

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 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

2'526

Workplaces

313

Services share

97.4 %

Jobs by sector: Primary 12 (0.5%) · Secondary 53 (2.1%) · Tertiary 2'461 (97.4%)

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

Agriculture

BFS · 2025

Farms

Organic share

100 %

Farmland

59 ha

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

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 24.09.2026

Municipality

Wikidata · CC0

BFS municipality number6617

Head of governmentAlexandre Bodmer

Websitecologny.ch ↗

Wikidata · continuously updated, retrieved 24.09.2026

Where Cologny ranks

Largest municipalities6'147 #16 GE · #331 CH Growing municipalities2% #10 GE · #356 CH Shrinking municipalities2% #36 GE · #1760 CH Jobs per resident0.41 #17 GE · #829 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% #29 GE · #1153 CH Against Switzerland12.7% #38 GE · #1089 CH Aligned with Switzerland87.3% #3 GE · #419 CH SVP strongholds19.4% #11 GE · #1814 CH SP strongholds8.2% #41 GE · #1684 CH Centre strongholds8.3% #32 GE · #1414 CH FDP strongholds40.5% #1 GE · #18 CH GLP strongholds7.1% #21 GE · #740 CH Green strongholds7.2% #44 GE · #1066 CH Largest by area7.4 km² #12 GE · #1210 CH Highest municipalities460 m #4 GE · #1457 CH Second homes19.2% #3 GE · #351 CH Organic farming100% #1 GE · #20 CH Best-connected municipalities29 min #11 GE · #75 CH Remotest municipalities29 min #35 GE · #2041 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 Solar potential per capita5'990 kWh #28 GE · #1836 CH Cheapest electricity24.43 Rp./kWh #16 GE · #294 CH Most expensive electricity24.43 Rp./kWh #17 GE · #1800 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).

Map

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