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Demographics

BFS · 2025
Women
75 45.5%
Men
90 54.5%
Children & youth (0–19)
38 23.0%
Swiss citizens
137 83.0%
Foreign residents
28 17.0%
Population density
113 pop./km²
0–19 · 38 · 23.0%20–64 · 103 · 62.4%65+ · 24 · 14.5%
Foreign residents 17.0%0%64.0%
Population change 2025: +32 (+24.1%) · 2 births · 0 deaths · net migration +29
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 'For food security – through increased sustainable domestic production, more plant-based food and clean drinking water (Food Initiative)'Federal● Rejected · 27.5% YesDistrict District du Jura-Nord vaudois: 23.6% Yes
12.5% YesNo 87.5%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict District du Jura-Nord vaudois: 31.3% Yes
43.8% YesNo 56.3%
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 du Jura-Nord vaudois: 51.4% Yes
56.9% YesNo 43.1%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict District du Jura-Nord vaudois: 48.7% Yes
54.8% YesNo 45.2%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict District du Jura-Nord vaudois: 41.7% Yes
54.6% YesNo 45.5%
14.06.2026Question subsidiaireCantonal VD● Rejected · 47.3% YesDistrict District du Jura-Nord vaudois: 42.7% Yes
43.1% YesNo 56.9%
14.06.2026Contre-projet législatif « Loi sur le salaire minimum »Cantonal VD● Rejected · 49.7% YesDistrict District du Jura-Nord vaudois: 47.0% Yes
38.5% YesNo 61.5%
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 du Jura-Nord vaudois: 45.8% Yes
44.6% YesNo 55.4%
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 du Jura-Nord vaudois: 48.9% Yes
54.6% YesNo 45.5%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict District du Jura-Nord vaudois: 64.5% Yes
43.0% YesNo 57.0%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP40.7% · strongest party
SVP40.7%
FDP17.6%
GRÜNE14.3%
SP12.9%
PdA/Sol.6.4%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier76%
Cantonal tax multiplier155%
76%VD range 46%83%
Tax rank 250 of 300 in canton Vaud
Tax burden
Single, 100'000 CHF gross income
16'554 CHF(16.6%)
Rank 245 of 300 in the canton · 1611 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:16'554 CHF(~16.6%)
SergeyCanton range VaudSwitzerland median
Show data table
Gross incomeSergeyVaudSwitzerland median
40'0004.2%3.7–4.3%5.4%
50'0007.8%6.9–8.1%7.8%
60'00011.5%10–11.8%10.5%
70'00013.7%11.9–14.1%11.9%
80'00014.6%12.8–15.1%13.1%
90'00015.4%13.5–15.9%14.1%
100'00016.6%14.6–17%15.3%
110'00017.5%15.4–18%16.3%
120'00018.5%16.3–19%17.2%
130'00019.3%17.1–19.9%18.1%
140'00020.2%17.9–20.8%19%
150'00021%18.6–21.6%19.7%
175'00023%20.5–23.6%21.6%
200'00024.7%22.1–25.4%23.2%
225'00026.3%23.5–26.9%24.6%
250'00027.7%24.8–28.4%25.8%
275'00029%26–29.6%26.8%
300'00030%27–30.7%27.4%
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020
Annual mean temperature 1991–20209.5 °C
Precipitation 1991–20201'190 mm
9.5 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
636 m
Mean elevation
606 m
Relief
90 m
Mean slope
5.5°
Flat share
49.7%
South-facing
3.2%
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
Roof potential
2.1 GWh/yr
Roofs + façades
2.7 GWh/yr
≈ households powered
500
Per inhabitant
12'848 kWh/yr
2 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
5.6 %
Avg. rooms
4.4
Dwellings
62
Built before 194669.4%
Built since 200114.5%
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
19
Workplaces
10
Services share
47.4 %
Jobs by sector: Primary 0 (0.0%) · Secondary 0 (0.0%) · Tertiary 9 (47.4%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025
Farms
3
Organic share
33.3 %
Farmland
73 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM
Major centrePT 69 min · Car 36 min
AgglomerationPT 42 min · Car 25 min
Remoteness 77/300 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number5762
Head of governmentAlexandre Martinis
Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities165 #288 VD · #2053 CHGrowing municipalities24.1% #1 VD · #1 CHShrinking municipalities24.1% #300 VD · #2108 CHJobs per resident0.12 #284 VD · #2064 CHFamilies & children23% #126 VD · #319 CHAge structure14.5% #259 VD · #2023 CHWomen share45.5% #297 VD · #2068 CHForeign residents17% #204 VD · #1133 CHPopulation density113/km² #168 VD · #1402 CHTax burden16'554 #258 VD · #1624 CHTaxes76% #250 VDWarmest municipalities9.5 °C #202 VD · #1005 CHSunniest municipalities44% #234 VD · #849 CHRainiest municipalities1'190 mm #84 VD · #716 CHVoter turnout68.4% #37 VD · #97 CHSVP strongholds40.7% #16 VD · #631 CHSP strongholds12.9% #281 VD · #1180 CHCentre strongholds1.3% #300 VD · #2082 CHFDP strongholds17.6% #242 VD · #608 CHGLP strongholds4.4% #243 VD · #1338 CHGreen strongholds14.3% #53 VD · #170 CHLargest by area1.5 km² #293 VD · #2068 CHHighest municipalities612 m #122 VD · #782 CHSecond homes5.6% #285 VD · #2005 CHOrganic farming33.3% #41 VD · #290 CHBest-connected municipalities69 min #223 VD · #1064 CHRemotest municipalities69 min #77 VD · #1066 CHHighest peaks636 m #177 VD · #1402 CHHighest-lying municipalities606 m #139 VD · #993 CHGreatest vertical range90 m #246 VD · #1887 CHSteepest municipalities5.5° #150 VD · #1485 CHSolar potential2 GWh #293 VD · #2080 CHSolar potential per capita12'848 kWh #107 VD · #651 CHCheapest electricity27.89 Rp./kWh #84 VD · #1297 CHMost expensive electricity27.89 Rp./kWh #255 VD · #848 CH

Localities

swisstopo · 1
What is the postal code of Sergey?
The postal code of Sergey is 1355.
What is the tax rate in Sergey?
The municipal tax multiplier of Sergey is 76% (2026); canton VD levies 155%.
How much tax do you pay in Sergey?
A single person without children pays about 16'554 CHF income tax in Sergey on 100'000 CHF gross income (federal, cantonal, municipal), rank 245 of 300 in canton VD. Source: ESTV (2026).
How many residents does Sergey have?
Sergey has 165 residents (2025).
How many foreign residents live in Sergey?
Sergey has 28 foreign residents, a share of 16.97% (2025).

Map

OpenStreetMap