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Demographics

BFS · 2025
Women
345 49.6%
Men
351 50.4%
Children & youth (0–19)
150 21.6%
Swiss citizens
574 82.5%
Foreign residents
122 17.5%
Population density
165 pop./km²
0–19 · 150 · 21.6%20–64 · 412 · 59.2%65+ · 134 · 19.3%
Foreign residents 17.5%0%64.0%
Population change 2025: +23 (+3.4%) · 14 births · 2 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
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Arbon: 36.9% Yes
39.2% YesNo 60.8%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Arbon: 60.1% Yes
59.7% YesNo 40.3%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Arbon: 55.5% Yes
67.2% YesNo 32.8%
14.06.2026Änderung der Kantonsverfassung zur Anpassung der FinanzkompetenzenCantonal TG● Accepted · 57.1% YesDistrict Bezirk Arbon: 57.0% Yes
57.1% YesNo 42.9%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Arbon: 40.4% Yes
31.3% YesNo 68.7%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Arbon: 45.7% Yes
50.0% YesNo 50.0%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Arbon: 42.0% Yes
45.8% YesNo 54.2%
08.03.2026Federal decree on Swiss currency and cash supply (counter-proposal to Cash Initiative)Federal● Accepted · 73.4% YesDistrict Bezirk Arbon: 71.0% Yes
78.5% YesNo 21.5%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP52.5% · strongest party
SVP52.5%
Mitte12.6%
GRÜNE8.4%
SP7.5%
FDP5.2%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier152%
Cantonal tax multiplier109%
152%TG range 94%175%
Tax rank 63 of 80 in canton Thurgau
Tax burden
Single, 100'000 CHF gross income
13'480 CHF(13.5%)
Rank 62 of 80 in the canton · 685 of 2110 in Switzerland
Median canton 13'209 CHF · median Switzerland 15'290 CHF
Cheapest Warth-Weiningen 10'862 CHF · most expensive Arbon 14'518 CHF
Income tax as % of gross income
0%8%15%23%30%40k50k100k150k200k250k300k
100'000 CHF:13'480 CHF(~13.5%)
SommeriCanton range ThurgauSwitzerland median
Show data table
Gross incomeSommeriThurgauSwitzerland median
40'0006.3%5–6.8%5.4%
50'0008.1%6.4–8.8%7.8%
60'0009.8%7.7–10.6%10.5%
70'00011%8.8–11.9%11.9%
80'00011.9%9.5–12.9%13.1%
90'00012.6%10.1–13.6%14.1%
100'00013.5%10.9–14.5%15.3%
110'00014.3%11.6–15.4%16.3%
120'00015%12.2–16.1%17.2%
130'00015.7%12.8–16.8%18.1%
140'00016.3%13.4–17.5%19%
150'00016.9%13.9–18.1%19.7%
175'00018.3%15.1–19.5%21.6%
200'00019.6%16.3–20.9%23.2%
225'00020.8%17.4–22.1%24.6%
250'00021.8%18.3–23.2%25.8%
275'00022.6%19.1–24%26.8%
300'00023.3%19.7–24.8%27.4%
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020
Annual mean temperature 1991–20209.7 °C
Precipitation 1991–2020987 mm
9.7 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
496 m
Mean elevation
472 m
Relief
52 m
Mean slope
2.1°
Flat share
95.6%
South-facing
2.4%
Above 2000 m
0.0%
Relief 52 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
10 GWh/yr
Roofs + façades
13.2 GWh/yr
≈ households powered
2'200
Per inhabitant
14'411 kWh/yr
10 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
29.66 Rp./kWh
Energy
13.3 Rp./kWh
Grid usage
12.73 Rp./kWh
Levies + grid surcharge
2.3 Rp./kWh
29.66 Rp./kWh10.5645.88
Canton median 28.29 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Elektra-Genossenschaft Sommeri
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
Standard model, deductible 300544 CHF/mo
Ø premium in canton Thurgau382 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo

Premiums are set not per municipality but per canton and premium region. Shown is the average adult premium paid in canton Thurgau (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
0.9 %
Second homes
8.8 %
Avg. rooms
4.2
Dwellings
332
Built before 194638.9%
Built since 200134.0%
0.9 %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
488
Workplaces
64
Services share
72.1 %
Jobs by sector: Primary 51 (10.5%) · Secondary 85 (17.4%) · Tertiary 352 (72.1%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025
Farms
14
Organic share
14.3 %
Farmland
256 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM
Major centrePT 101 min · Car 75 min
AgglomerationPT 19 min · Car 9 min
Remoteness 18/80 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number4446
DistrictBezirk Arbon
Wikidata · continuously updated, retrieved 24.09.2026

Localities

swisstopo · 1
What is the postal code of Sommeri?
The postal code of Sommeri is 8580.
What is the tax rate in Sommeri?
The municipal tax multiplier of Sommeri is 152% (2026); canton TG levies 109%.
How much tax do you pay in Sommeri?
A single person without children pays about 13'480 CHF income tax in Sommeri on 100'000 CHF gross income (federal, cantonal, municipal), rank 62 of 80 in canton TG. Source: ESTV (2026).
How many residents does Sommeri have?
Sommeri has 696 residents (2025).
How many foreign residents live in Sommeri?
Sommeri has 122 foreign residents, a share of 17.53% (2025).

Map

OpenStreetMap