What is the postal code of Collex-Bossy?

Collex-Bossy has 2 postal codes: 1239, 1290.

What is the tax rate in Collex-Bossy?

The municipal tax multiplier of Collex-Bossy is 46% (2026); canton GE levies 147.5%.

How much tax do you pay in Collex-Bossy?

A single person without children pays about 15'524 CHF income tax in Collex-Bossy on 100'000 CHF gross income (federal, cantonal, municipal), rank 32 of 45 in canton GE. Source: ESTV (2026).

How many residents does Collex-Bossy have?

Collex-Bossy has 1'673 residents (2025).

How many foreign residents live in Collex-Bossy?

Collex-Bossy has 541 foreign residents, a share of 32.34% (2025).

Switzerland · Canton GE

Collex-Bossy

1239–1290

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

Demographics

BFS · 2025

Women

828 49.5%

Men

845 50.5%

Children & youth (0–19)

415 24.8%

Swiss citizens

1'132 67.7%

Foreign residents

541 32.3%

Population density

243 pop./km²

0–19 · 415 · 24.8%20–64 · 955 · 57.1%65+ · 303 · 18.1%

Foreign residents 32.3%0%64.0%

Population change 2025: +7 (+0.4%) · 12 births · 5 deaths · net migration +10

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 Collex-Bossy

BFS

32.1% YesNo 67.9%

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

27.7% YesNo 72.3%

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

46.5% YesNo 53.5%

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

40.7% YesNo 59.3%

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

61.3% YesNo 38.7%

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

58.5% YesNo 41.5%

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

46.6% YesNo 53.4%

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

33.5% YesNo 66.6%

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

60.9% YesNo 39.1%

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

55.5% YesNo 44.6%

All federal votes →

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

Politics

National Council election 2023

FDP18.1% · strongest party

FDP18.1%

GRÜNE17.9%

SVP16.8%

SP12.8%

Mitte11.8%

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

Taxes 2026

ESTV

Municipal tax multiplier46%

Cantonal tax multiplier147.5%

46%GE range 25%51%

Tax rank 32 of 45 in canton Geneva

Tax burden

Single, 100'000 CHF gross income

15'524 CHF(15.5%)

Rank 32 of 45 in the canton · 1108 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:15'524 CHF(~15.5%)

Collex-BossyCanton range GenevaSwitzerland median

Show data table

Gross income	Collex-Bossy	Geneva	Switzerland median
40'000	5.2%	4.6–5.3%	5.4%
50'000	7.6%	6.8–7.8%	7.8%
60'000	9.9%	8.8–10.1%	10.5%
70'000	11.7%	10.4–12%	11.9%
80'000	13.1%	11.7–13.4%	13.1%
90'000	14.2%	12.7–14.6%	14.1%
100'000	15.5%	13.9–15.9%	15.3%
110'000	16.7%	14.9–17.1%	16.3%
120'000	17.6%	15.8–18.1%	17.2%
130'000	18.5%	16.6–18.9%	18.1%
140'000	19.3%	17.4–19.8%	19%
150'000	20.1%	18.1–20.6%	19.7%
175'000	21.9%	19.8–22.4%	21.6%
200'000	23.5%	21.3–24%	23.2%
225'000	24.9%	22.6–25.5%	24.6%
250'000	26.2%	23.8–26.7%	25.8%
275'000	27.2%	24.8–27.8%	26.8%
300'000	28.1%	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 1991–202010.8 °C

Precipitation 1991–2020997 mm

10.8 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

481 m

Mean elevation

442 m

Relief

86 m

Mean slope

2.5°

Flat share

90.7%

South-facing

1.8%

Above 2000 m

0.0%

Relief 86 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

12.3 GWh/yr

Roofs + façades

15.6 GWh/yr

≈ households powered

2'700

Per inhabitant

7'358 kWh/yr

12 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 Collex-Bossy →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

0.29 %

Second homes

14.4 %

Avg. rooms

4.1

Dwellings

679

Built before 194625.6%

Built since 200121.9%

0.29 %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

287

Workplaces

100

Services share

66.2 %

Jobs by sector: Primary 68 (23.7%) · Secondary 29 (10.1%) · Tertiary 190 (66.2%)

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

Agriculture

BFS · 2025

Farms

Organic share

7.7 %

Farmland

580 ha

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

Accessibility

ARE · NPVM

Major centrePT 39 min · Car 20 min

AgglomerationPT 39 min · Car 20 min

Remoteness 17/45 in canton

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

Municipality

Wikidata · CC0

BFS municipality number6615

Head of governmentSylvie Malherbe · FDP.Die Liberalen

Websitecollex-bossy.ch ↗

Wikidata · continuously updated, retrieved 24.09.2026

Where Collex-Bossy ranks

Largest municipalities1'673 #32 GE · #1083 CH Growing municipalities0.4% #29 GE · #1155 CH Shrinking municipalities0.4% #17 GE · #959 CH Jobs per resident0.17 #40 GE · #1929 CH Families & children24.8% #5 GE · #94 CH Age structure18.1% #26 GE · #1634 CH Women share49.5% #44 GE · #1300 CH Foreign residents32.3% #17 GE · #225 CH Population density243/km² #38 GE · #914 CH Tax burden15'524 #33 GE · #1109 CH Taxes46% #32 GE Warmest municipalities10.8 °C #38 GE · #148 CH Sunniest municipalities47.1% #34 GE · #439 CH Rainiest municipalities997 mm #2 GE · #1634 CH Voter turnout61.8% #11 GE · #442 CH Against Switzerland22.5% #14 GE · #385 CH Aligned with Switzerland77.5% #26 GE · #1121 CH SVP strongholds16.8% #22 GE · #1927 CH SP strongholds12.8% #30 GE · #1194 CH Centre strongholds11.8% #9 GE · #1052 CH FDP strongholds18.1% #22 GE · #583 CH GLP strongholds8.5% #11 GE · #513 CH Green strongholds17.9% #2 GE · #40 CH Largest by area6.9 km² #14 GE · #1289 CH Highest municipalities430 m #22 GE · #1714 CH Second homes14.4% #17 GE · #640 CH Organic farming7.7% #34 GE · #1396 CH Best-connected municipalities39 min #30 GE · #222 CH Remotest municipalities39 min #17 GE · #1903 CH Highest peaks481 m #9 GE · #1942 CH Highest-lying municipalities442 m #8 GE · #1783 CH Greatest vertical range86 m #17 GE · #1907 CH Steepest municipalities2.5° #19 GE · #1956 CH Solar potential12 GWh #32 GE · #1398 CH Solar potential per capita7'358 kWh #19 GE · #1607 CH Cheapest electricity24.43 Rp./kWh #14 GE · #292 CH Most expensive electricity24.43 Rp./kWh #15 GE · #1798 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Collex1239 Versoix1290

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Collex-Bossy?: Collex-Bossy has 2 postal codes: 1239, 1290.
What is the tax rate in Collex-Bossy?: The municipal tax multiplier of Collex-Bossy is 46% (2026); canton GE levies 147.5%.
How much tax do you pay in Collex-Bossy?: A single person without children pays about 15'524 CHF income tax in Collex-Bossy on 100'000 CHF gross income (federal, cantonal, municipal), rank 32 of 45 in canton GE. Source: ESTV (2026).
How many residents does Collex-Bossy have?: Collex-Bossy has 1'673 residents (2025).
How many foreign residents live in Collex-Bossy?: Collex-Bossy has 541 foreign residents, a share of 32.34% (2025).

Map

OpenStreetMap

Compare

Collex-Bossy compared with