What is the postal code of Sissach?

The postal code of Sissach is 4450.

What is the tax rate in Sissach?

The municipal tax multiplier of Sissach is 57% (2026); canton BL levies 100%.

How much tax do you pay in Sissach?

A single person without children pays about 15'991 CHF income tax in Sissach on 100'000 CHF gross income (federal, cantonal, municipal), rank 22 of 86 in canton BL. Source: ESTV (2026).

How many residents does Sissach have?

Sissach has 6'964 residents (2025).

How many foreign residents live in Sissach?

Sissach has 1'281 foreign residents, a share of 18.39% (2025).

Switzerland · Canton BL

Sissach

4450

BL CANTON4450

Residents

6'964

Area

8.9 km²

Population density

782 pop./km²

Elevation

372 m a.s.l.

Terrain up to

740 m a.s.l.

Tax multiplier

57%

Postal codes

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

Demographics

BFS · 2025

Women

3'529 50.7%

Men

3'435 49.3%

Children & youth (0–19)

1'319 18.9%

Swiss citizens

5'683 81.6%

Foreign residents

1'281 18.4%

Population density

782 pop./km²

0–19 · 1'319 · 18.9%20–64 · 4'064 · 58.4%65+ · 1'581 · 22.7%

Foreign residents 18.4%0%64.0%

STATPOP 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026 · swisstopo, retrieved 24.08.2026

Vote results for Sissach

BFS

14.06.2026Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)Federal● Accepted · 52.5% Yes

51.9% YesNo 48.1%

14.06.2026Volksinitiative «Keine 10-Millionen-Schweiz! (Nachhaltigkeitsinitiative)»Federal● Rejected · 45.2% Yes

41.1% YesNo 58.9%

14.06.2026Neue Ortsdurchfahrt BirsfeldenCantonal BL● Accepted · 56.2% Yes

60.3% YesNo 39.7%

14.06.2026Gesetzesinitiative Energiepolitik nur mit der BevölkerungCantonal BL● Rejected · 44.4% Yes

37.5% YesNo 62.5%

14.06.2026Verfassungsinitiative Zämme in EuropaCantonal BL● Accepted · 53.7% Yes

55.8% YesNo 44.2%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

56.9% YesNo 43.1%

08.03.2026Volksinitiative «Für eine gerechte Energie- und Klimapolitik: Investieren für Wohlstand, Arbeit und Umwelt (Klimafonds-Initiative)»Federal● Rejected · 29.3% Yes

32.0% YesNo 68.1%

08.03.2026Volksinitiative «200 Franken sind genug! (SRG-Initiative)»Federal● Rejected · 38.1% Yes

32.7% YesNo 67.3%

08.03.2026Bargeldinitiative und Gegenvorschlag: StichfrageFederal● Rejected · 37.4% Yes

32.6% YesNo 67.4%

08.03.2026Bundesbeschluss über die schweizerische Währung und die Bargeldversorgung (Gegenvorschlag zur Bargeldinitiative)Federal● Accepted · 73.4% Yes

75.0% YesNo 25.0%

All federal votes →

Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 31.08.2026

Politics

National Council election 2023

SVP26.4% · strongest party

SVP26.4%

SP24.2%

FDP17.3%

GRÜNE14.3%

GLP7.2%

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 31.08.2026

Taxes 2026

ESTV

Municipal tax multiplier57%

Cantonal tax multiplier100%

57%BL range 45%72%

Tax rank 24 of 86 in canton Basel-Landschaft

Tax burden

Single, 100'000 CHF gross income

15'991 CHF(16%)

Rank 22 of 86 in the canton · 1267 of 2110 in Switzerland

Median canton 16'264 CHF · median Switzerland 15'290 CHF

Cheapest Pfeffingen 14'899 CHF · most expensive Waldenburg 17'356 CHF

Income tax as % of gross income

100'000 CHF:15'991 CHF(~16%)

SissachCanton range Basel-LandschaftSwitzerland median

Show data table

Gross income	Sissach	Basel-Landschaft	Switzerland median
40'000	6.2%	5.7–6.7%	5.4%
50'000	8.4%	7.8–9.2%	7.8%
60'000	10.5%	9.7–11.4%	10.5%
70'000	12.1%	11.3–13.2%	11.9%
80'000	13.5%	12.6–14.7%	13.1%
90'000	14.7%	13.7–16%	14.1%
100'000	16%	14.9–17.4%	15.3%
110'000	17.2%	16–18.6%	16.3%
120'000	18.2%	17–19.7%	17.2%
130'000	19.1%	17.9–20.7%	18.1%
140'000	20%	18.7–21.7%	19%
150'000	20.9%	19.5–22.5%	19.7%
175'000	22.7%	21.3–24.5%	21.6%
200'000	24.3%	22.8–26.2%	23.2%
225'000	25.7%	24.1–27.6%	24.6%
250'000	26.9%	25.3–28.8%	25.8%
275'000	27.9%	26.3–29.9%	26.8%
300'000	28.7%	27.1–30.8%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202010.4 °C

Precipitation 1991–2020990 mm

10.4 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

740 m

Mean elevation

482 m

Relief

391 m

Mean slope

13.1°

Flat share

20.3%

South-facing

33.9%

Above 2000 m

0.0%

Relief 391 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

50.1 GWh/yr

Roofs + façades

67 GWh/yr

≈ households powered

11'100

50 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 31.08.2026

Electricity

ElCom · 2026

Tariff H4

27.75 Rp./kWh

Energy

11.82 Rp./kWh

Grid usage

11.5 Rp./kWh

Levies + grid surcharge

2.3 Rp./kWh

27.75 Rp./kWh9.6443.61

Canton median 31.98 Rp./kWhSwiss median 27.7 Rp./kWh

Network operator Genossenschaft Elektra Sissach

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.

2026 · Federal Electricity Commission (ElCom), retrieved 28.08.2026

Housing

BFS

Vacancy rate

0.69 %

Avg. rooms

3.8

Dwellings

3'473

Built before 194624.4%

Built since 200128.8%

0.69 %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 31.08.2026 · Vacant dwellings survey 2025 · Federal Statistical Office (FSO), retrieved 31.08.2026

Accessibility

ARE · NPVM

Major centrePT 38 min · Car 23 min

AgglomerationPT 34 min · Car 23 min

Remoteness 62/86 in canton

National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 28.08.2026

Municipality

Wikidata · CC0

Websitesissach.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities6'964 #14 BL · #281 CH Families & children18.9% #52 BL · #1469 CH Age structure22.7% #54 BL · #727 CH Women share50.7% #31 BL · #540 CH Foreign residents18.4% #38 BL · #1000 CH Population density782/km² #22 BL · #312 CH Tax burden15'991 #24 BL · #1269 CH Taxes57% #24 BL Warmest municipalities10.4 °C #25 BL · #242 CH Sunniest municipalities41.1% #53 BL · #1374 CH Rainiest municipalities990 mm #56 BL · #1666 CH Voter turnout56.8% #22 BL · #826 CH Against Switzerland8% #37 BL · #1340 CH Aligned with Switzerland92% #14 BL · #140 CH SVP strongholds26.4% #75 BL · #1492 CH SP strongholds24.2% #24 BL · #206 CH Centre strongholds6.5% #66 BL · #1631 CH FDP strongholds17.3% #6 BL · #630 CH GLP strongholds7.2% #24 BL · #715 CH Green strongholds14.3% #5 BL · #165 CH Largest by area8.9 km² #18 BL · #1059 CH Highest municipalities372 m #66 BL · #1987 CH Remotest municipalities38 min #62 BL · #1911 CH Best-connected municipalities38 min #25 BL · #203 CH Highest peaks740 m #32 BL · #1104 CH Highest-lying municipalities482 m #50 BL · #1520 CH Greatest vertical range391 m #22 BL · #830 CH Steepest municipalities13.1° #35 BL · #692 CH Solar potential50 GWh #13 BL · #328 CH Cheapest electricity27.75 Rp./kWh #9 BL · #994 CH Most expensive electricity27.75 Rp./kWh #77 BL · #1113 CH

Postal codes (1)

swisstopo

4450

Sissach

Localities

swisstopo · 1

Sissach4450

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Sissach?: The postal code of Sissach is 4450.
What is the tax rate in Sissach?: The municipal tax multiplier of Sissach is 57% (2026); canton BL levies 100%.
How much tax do you pay in Sissach?: A single person without children pays about 15'991 CHF income tax in Sissach on 100'000 CHF gross income (federal, cantonal, municipal), rank 22 of 86 in canton BL. Source: ESTV (2026).
How many residents does Sissach have?: Sissach has 6'964 residents (2025).
How many foreign residents live in Sissach?: Sissach has 1'281 foreign residents, a share of 18.39% (2025).

Map

OpenStreetMap

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