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Demographics

BFS · 2025
Women
67 46.5%
Men
77 53.5%
Children & youth (0–19)
30 20.8%
Swiss citizens
108 75.0%
Foreign residents
36 25.0%
Population density
57 pop./km²
0–19 · 30 · 20.8%20–64 · 82 · 56.9%65+ · 32 · 22.2%
Foreign residents 25.0%0%64.0%
Population change 2025: −7 (−4.6%) · 2 births · 0 deaths · net migration −8
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
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict District de la Broye-Vully: 32.5% Yes
28.6% YesNo 71.4%
27.09.2026Initiative populaire « Baisse d’impôts pour tous — Redonner du pouvoir d’achat à la classe moyenne »Cantonal VD● Accepted · 53.9% YesDistrict District de la Broye-Vully: 58.7% Yes
65.1% YesNo 34.9%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict District de la Broye-Vully: 56.8% Yes
57.9% YesNo 42.1%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict District de la Broye-Vully: 49.9% Yes
48.7% YesNo 51.3%
14.06.2026Question subsidiaireCantonal VD● Rejected · 47.3% YesDistrict District de la Broye-Vully: 35.1% Yes
38.9% YesNo 61.1%
14.06.2026Contre-projet législatif « Loi sur le salaire minimum »Cantonal VD● Rejected · 49.7% YesDistrict District de la Broye-Vully: 50.9% Yes
58.3% YesNo 41.7%
14.06.2026Initiative populaire législative « Pour le droit de vivre dignement de son travail – pour un salaire minimum cantonal »Cantonal VD● Rejected · 49.3% YesDistrict District de la Broye-Vully: 38.1% Yes
50.0% YesNo 50.0%
14.06.2026Initiative populaire constitutionnelle « Pour le droit de vivre dignement de son travail – pour un salaire minimum cantonal »Cantonal VD● Accepted · 51.7% YesDistrict District de la Broye-Vully: 41.6% Yes
54.1% YesNo 46.0%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict District de la Broye-Vully: 62.0% Yes
53.7% YesNo 46.3%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP36.5% · strongest party
SVP36.5%
FDP23.4%
SP17.9%
GRÜNE12.4%
Mitte5.9%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier65%
Cantonal tax multiplier155%
65%VD range 46%83%
Tax rank 73 of 300 in canton Vaud
Tax burden
Single, 100'000 CHF gross income
15'822 CHF(15.8%)
Rank 70 of 300 in the canton · 1180 of 2110 in Switzerland
Median canton 16'155 CHF · median Switzerland 15'290 CHF
Cheapest Eclépens 14'558 CHF · most expensive La Praz 17'020 CHF
Income tax as % of gross income
0%9%18%26%35%40k50k100k150k200k250k300k
100'000 CHF:15'822 CHF(~15.8%)
SyensCanton range VaudSwitzerland median
Show data table
Gross incomeSyensVaudSwitzerland median
40'0004%3.7–4.3%5.4%
50'0007.5%6.9–8.1%7.8%
60'00010.9%10–11.8%10.5%
70'00013%11.9–14.1%11.9%
80'00014%12.8–15.1%13.1%
90'00014.7%13.5–15.9%14.1%
100'00015.8%14.6–17%15.3%
110'00016.8%15.4–18%16.3%
120'00017.7%16.3–19%17.2%
130'00018.5%17.1–19.9%18.1%
140'00019.4%17.9–20.8%19%
150'00020.1%18.6–21.6%19.7%
175'00022.1%20.5–23.6%21.6%
200'00023.8%22.1–25.4%23.2%
225'00025.3%23.5–26.9%24.6%
250'00026.7%24.8–28.4%25.8%
275'00027.9%26–29.6%26.8%
300'00028.9%27–30.7%27.4%
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020
Annual mean temperature 1991–20209.6 °C
Precipitation 1991–20201'024 mm
9.6 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
706 m
Mean elevation
602 m
Relief
173 m
Mean slope
10.7°
Flat share
28.2%
South-facing
8.8%
Above 2000 m
0.0%
Relief 173 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
Roof potential
2.9 GWh/yr
Roofs + façades
3.7 GWh/yr
≈ households powered
600
Per inhabitant
20'139 kWh/yr
3 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
27.89 Rp./kWh
Energy
13.01 Rp./kWh
Grid usage
10.18 Rp./kWh
Levies + grid surcharge
2.92 Rp./kWh
27.89 Rp./kWh10.5645.88
Canton median 29.09 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Romande Energie SA
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
Premium regionRegion 2
Standard model, deductible 300663 CHF/mo
Ø premium in canton Vaud477 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo

Premiums are set per canton and premium region. This area lies in premium region 2 of canton Vaud. Shown is the average adult premium paid across the whole canton Vaud (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 %
Second homes
13.2 %
Avg. rooms
4.1
Dwellings
77
Built before 194685.7%
Built since 20011.3%
0 %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
27
Workplaces
15
Services share
48.1 %
Jobs by sector: Primary 6 (22.2%) · Secondary 8 (29.6%) · Tertiary 13 (48.1%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025
Farms
3
Organic share
0 %
Farmland
97 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM
Major centrePT 68 min · Car 36 min
AgglomerationPT 45 min · Car 31 min
Remoteness 84/300 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number5688
Head of governmentAlexandre George
Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities144 #291 VD · #2068 CHGrowing municipalities-4.6% #294 VD · #2089 CHShrinking municipalities-4.6% #7 VD · #20 CHJobs per resident0.19 #220 VD · #1838 CHFamilies & children20.8% #230 VD · #891 CHAge structure22.2% #38 VD · #829 CHWomen share46.5% #296 VD · #2039 CHForeign residents25% #103 VD · #557 CHPopulation density57/km² #252 VD · #1742 CHTax burden15'822 #83 VD · #1194 CHTaxes65% #73 VDWarmest municipalities9.6 °C #192 VD · #920 CHSunniest municipalities45.1% #148 VD · #654 CHRainiest municipalities1'024 mm #181 VD · #1523 CHVoter turnout56.5% #236 VD · #1025 CHSVP strongholds36.5% #34 VD · #874 CHSP strongholds17.9% #204 VD · #643 CHCentre strongholds5.9% #81 VD · #1700 CHFDP strongholds23.4% #149 VD · #299 CHGLP strongholds3.4% #267 VD · #1519 CHGreen strongholds12.4% #111 VD · #306 CHLargest by area2.5 km² #264 VD · #1951 CHHighest municipalities588 m #139 VD · #862 CHSecond homes13.2% #86 VD · #757 CHOrganic farming0% #246 VD · #1995 CHBest-connected municipalities68 min #216 VD · #1036 CHRemotest municipalities68 min #84 VD · #1100 CHHighest peaks706 m #144 VD · #1191 CHHighest-lying municipalities602 m #141 VD · #1004 CHGreatest vertical range173 m #152 VD · #1476 CHSteepest municipalities10.7° #53 VD · #874 CHSolar potential3 GWh #284 VD · #2050 CHSolar potential per capita20'139 kWh #25 VD · #178 CHCheapest electricity27.89 Rp./kWh #71 VD · #1284 CHMost expensive electricity27.89 Rp./kWh #242 VD · #835 CH

Localities

swisstopo · 1
What is the postal code of Syens?
The postal code of Syens is 1510.
What is the tax rate in Syens?
The municipal tax multiplier of Syens is 65% (2026); canton VD levies 155%.
How much tax do you pay in Syens?
A single person without children pays about 15'822 CHF income tax in Syens on 100'000 CHF gross income (federal, cantonal, municipal), rank 70 of 300 in canton VD. Source: ESTV (2026).
How many residents does Syens have?
Syens has 144 residents (2025).
How many foreign residents live in Syens?
Syens has 36 foreign residents, a share of 25% (2025).

Map

OpenStreetMap