Demographics
BFS · 2025Women
797 48.2%
Men
856 51.8%
Children & youth (0–19)
311 18.8%
Swiss citizens
1'145 69.3%
Foreign residents
508 30.7%
Population density
656 pop./km²
0–19 · 311 · 18.8%20–64 · 1'055 · 63.8%65+ · 287 · 17.4%
Foreign residents 30.7%0%64.0%
Population change 2025: +0 (+0%) · 14 births · 12 deaths · net migration +2
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 Bezirk Laufenburg: 23.2% Yes
21.1% YesNo 78.9%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Laufenburg: 31.7% Yes
36.4% YesNo 63.6%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Laufenburg: 58.3% Yes
58.9% YesNo 41.1%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Laufenburg: 54.4% Yes
59.9% YesNo 40.1%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Laufenburg: 41.2% Yes
41.8% YesNo 58.2%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Laufenburg: 48.7% Yes
49.8% YesNo 50.2%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Laufenburg: 43.1% Yes
48.3% YesNo 51.7%
08.03.2026Popular Initiative ‘For a fair energy and climate policy: Investing for prosperity, jobs and the environment (Climate Fund Initiative)’Federal● Rejected · 29.3% YesDistrict Bezirk Laufenburg: 20.9% Yes
17.5% YesNo 82.5%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Laufenburg: 43.0% Yes
54.7% YesNo 45.4%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Laufenburg: 38.1% Yes
43.4% YesNo 56.6%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP49.5% · strongest party
SVP49.5%
SP13.6%
Mitte11.6%
FDP7.5%
GLP7.2%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier80%
Cantonal tax multiplier103%
80%AG range 48%127%
Tax rank 10 of 196 in canton AargauTax burden
Single, 100'000 CHF gross income
11'459 CHF(11.5%)
Rank 10 of 196 in the canton · 186 of 2110 in Switzerland
Median canton 12'952 CHF · median Switzerland 15'290 CHF
Cheapest Oberwil-Lieli 9'753 CHF · most expensive Ammerswil 13'965 CHF
100'000 CHF:11'459 CHF(~11.5%)
SisselnCanton range AargauSwitzerland median
Show data table
| Gross income | Sisseln | Aargau | Switzerland median |
|---|---|---|---|
| 40'000 | 4.6% | 3.8–5.6% | 5.4% |
| 50'000 | 6.2% | 5.2–7.7% | 7.8% |
| 60'000 | 7.6% | 6.4–9.3% | 10.5% |
| 70'000 | 8.7% | 7.4–10.7% | 11.9% |
| 80'000 | 9.7% | 8.2–11.9% | 13.1% |
| 90'000 | 10.5% | 8.9–12.8% | 14.1% |
| 100'000 | 11.5% | 9.8–14% | 15.3% |
| 110'000 | 12.3% | 10.5–14.9% | 16.3% |
| 120'000 | 13% | 11.2–15.8% | 17.2% |
| 130'000 | 13.7% | 11.7–16.5% | 18.1% |
| 140'000 | 14.4% | 12.4–17.3% | 19% |
| 150'000 | 15% | 13–18% | 19.7% |
| 175'000 | 16.5% | 14.4–19.7% | 21.6% |
| 200'000 | 17.8% | 15.5–21.1% | 23.2% |
| 225'000 | 19% | 16.6–22.4% | 24.6% |
| 250'000 | 20% | 17.6–23.6% | 25.8% |
| 275'000 | 20.9% | 18.4–24.5% | 26.8% |
| 300'000 | 21.6% | 19.1–25.3% | 27.4% |
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual mean temperature 1991–202010.7 °C
Precipitation 1991–20201'138 mm
10.7 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026
Terrain
swisstopo · DHM 40 mHighest point
309 m
Mean elevation
300 m
Relief
20 m
Mean slope
1.9°
Flat share
86.3%
South-facing
0.5%
Above 2000 m
0.0%
Relief 20 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
17.6 GWh/yr
Roofs + façades
22.3 GWh/yr
≈ households powered
3'900
Per inhabitant
10'653 kWh/yr
18 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 · 2027Tariff H4
19.64 Rp./kWh
Energy
10 Rp./kWh
Grid usage
5.65 Rp./kWh
Levies + grid surcharge
2.58 Rp./kWh
19.64 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Einwohnergemeinde Sisseln, Strom
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 · 2024Standard model, deductible 300570 CHF/mo
Ø premium in canton Aargau392 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 Aargau (2024, BAG) — it applies canton-wide, not to any single location.
2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026
Housing
BFS · AREVacancy rate
0.13 %
Second homes
5.1 %
Avg. rooms
4.2
Dwellings
782
Built before 194611.4%
Built since 200128.9%
0.13 %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 · 2024Jobs
1'243
Workplaces
95
Services share
23.9 %
Jobs by sector: Primary 6 (0.5%) · Secondary 940 (75.6%) · Tertiary 297 (23.9%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
2
Organic share
0 %
Farmland
56 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Municipality
Wikidata · CC0Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities1'653 #125 AG · #1093 CHGrowing municipalities0% #146 AG · #1423 CHShrinking municipalities0% #54 AG · #697 CHJobs per resident0.75 #11 AG · #183 CHFamilies & children18.8% #153 AG · #1505 CHAge structure17.4% #153 AG · #1724 CHWomen share48.2% #168 AG · #1821 CHForeign residents30.7% #38 AG · #287 CHPopulation density656/km² #57 AG · #390 CHTax burden11'459 #10 AG · #186 CHTaxes80% #10 AGWarmest municipalities10.7 °C #8 AG · #159 CHSunniest municipalities40.4% #48 AG · #1653 CHRainiest municipalities1'138 mm #14 AG · #880 CHVoter turnout47.7% #178 AG · #1941 CHAgainst Switzerland25.5% #18 AG · #216 CHAligned with Switzerland74.5% #150 AG · #1253 CHSVP strongholds49.5% #43 AG · #249 CHSP strongholds13.6% #82 AG · #1098 CHCentre strongholds11.6% #102 AG · #1059 CHFDP strongholds7.5% #178 AG · #1658 CHGLP strongholds7.2% #98 AG · #721 CHGreen strongholds4.1% #160 AG · #1729 CHLargest by area2.5 km² #185 AG · #1947 CHHighest municipalities292 m #192 AG · #2064 CHSecond homes5.1% #182 AG · #2045 CHOrganic farming0% #171 AG · #1866 CHBest-connected municipalities53 min #31 AG · #570 CHRemotest municipalities53 min #167 AG · #1553 CHHighest peaks309 m #196 AG · #2107 CHHighest-lying municipalities300 m #196 AG · #2100 CHGreatest vertical range20 m #196 AG · #2086 CHSteepest municipalities1.9° #195 AG · #2013 CHSolar potential18 GWh #111 AG · #1117 CHSolar potential per capita10'653 kWh #49 AG · #963 CHCheapest electricity19.64 Rp./kWh #1 AG · #19 CHMost expensive electricity19.64 Rp./kWh #196 AG · #2088 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- What is the postal code of Sisseln?
- The postal code of Sisseln is 4334.
- What is the tax rate in Sisseln?
- The municipal tax multiplier of Sisseln is 80% (2026); canton AG levies 103%.
- How much tax do you pay in Sisseln?
- A single person without children pays about 11'459 CHF income tax in Sisseln on 100'000 CHF gross income (federal, cantonal, municipal), rank 10 of 196 in canton AG. Source: ESTV (2026).
- How many residents does Sisseln have?
- Sisseln has 1'653 residents (2025).
- How many foreign residents live in Sisseln?
- Sisseln has 508 foreign residents, a share of 30.73% (2025).
Map
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