What is the postal code of Birsfelden?

The postal code of Birsfelden is 4127.

What is the tax rate in Birsfelden?

The municipal tax multiplier of Birsfelden is 62% (2026); canton BL levies 100%.

How much tax do you pay in Birsfelden?

A single person without children pays about 16'446 CHF income tax in Birsfelden on 100'000 CHF gross income (federal, cantonal, municipal), rank 54 of 86 in canton BL. Source: ESTV (2026).

How many residents does Birsfelden have?

Birsfelden has 10'401 residents (2025).

How many foreign residents live in Birsfelden?

Birsfelden has 3'619 foreign residents, a share of 34.79% (2025).

Switzerland · Canton BL

Birsfelden

4127

BL CANTON4127

Residents

10'401

Area

2.5 km²

Population density

4'144 pop./km²

Elevation

261 m a.s.l.

Tax multiplier

62%

Postal codes

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

Demographics

BFS · 2025

Women

5'267 50.6%

Men

5'134 49.4%

Children & youth (0–19)

1'751 16.8%

Swiss citizens

6'782 65.2%

Foreign residents

3'619 34.8%

Population density

4'144 pop./km²

0–19 · 1'751 · 16.8%20–64 · 6'151 · 59.1%65+ · 2'499 · 24.0%

Foreign residents 34.8%0%64.0%

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

Vote results for Birsfelden

BFS

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

45.9% YesNo 54.1%

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

43.3% YesNo 56.7%

14.06.2026Neue Ortsdurchfahrt BirsfeldenCantonal BL● Accepted · 56.2% Yes

41.5% YesNo 58.5%

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

38.7% YesNo 61.3%

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

42.0% YesNo 58.0%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

54.3% YesNo 45.7%

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

35.5% YesNo 64.5%

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

36.6% YesNo 63.4%

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

41.6% YesNo 58.4%

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

70.0% YesNo 30.0%

All federal votes →

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

Politics

National Council election 2023

SP36.7% · strongest party

SP36.7%

SVP23.5%

GRÜNE9.4%

Mitte8.8%

FDP8.7%

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

Taxes 2026

ESTV

Municipal tax multiplier62%

Cantonal tax multiplier100%

62%BL range 45%72%

Tax rank 61 of 86 in canton Basel-Landschaft

Tax burden

Single, 100'000 CHF gross income

16'446 CHF(16.4%)

Rank 54 of 86 in the canton · 1542 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:16'446 CHF(~16.4%)

BirsfeldenCanton range Basel-LandschaftSwitzerland median

Show data table

Gross income	Birsfelden	Basel-Landschaft	Switzerland median
40'000	6.4%	5.7–6.7%	5.4%
50'000	8.7%	7.8–9.2%	7.8%
60'000	10.8%	9.7–11.4%	10.5%
70'000	12.5%	11.3–13.2%	11.9%
80'000	13.9%	12.6–14.7%	13.1%
90'000	15.1%	13.7–16%	14.1%
100'000	16.4%	14.9–17.4%	15.3%
110'000	17.6%	16–18.6%	16.3%
120'000	18.7%	17–19.7%	17.2%
130'000	19.6%	17.9–20.7%	18.1%
140'000	20.6%	18.7–21.7%	19%
150'000	21.4%	19.5–22.5%	19.7%
175'000	23.3%	21.3–24.5%	21.6%
200'000	24.9%	22.8–26.2%	23.2%
225'000	26.3%	24.1–27.6%	24.6%
250'000	27.5%	25.3–28.8%	25.8%
275'000	28.5%	26.3–29.9%	26.8%
300'000	29.4%	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 1991–202011.1 °C

Precipitation 1991–2020831 mm

11.1 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

279 m

Mean elevation

258 m

Relief

34 m

Mean slope

1.9°

Flat share

88.8%

South-facing

0.7%

Above 2000 m

0.0%

Relief 34 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

50.5 GWh/yr

Roofs + façades

64.8 GWh/yr

≈ households powered

11'200

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

31.98 Rp./kWh

Energy

13.73 Rp./kWh

Grid usage

14.26 Rp./kWh

Levies + grid surcharge

2.92 Rp./kWh

31.98 Rp./kWh9.6443.61

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

Network operator Primeo Netz AG

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

0.94 %

Avg. rooms

3.2

Dwellings

5'853

Built before 194618.6%

Built since 20018.7%

0.94 %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 22 min · Car 12 min

AgglomerationPT 22 min · Car 12 min

Remoteness 81/86 in canton

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

Municipality

Wikidata · CC0

Websitebirsfelden.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities10'401 #10 BL · #173 CH Families & children16.8% #74 BL · #1840 CH Age structure24% #36 BL · #515 CH Women share50.6% #32 BL · #577 CH Foreign residents34.8% #3 BL · #164 CH Population density4'144/km² #1 BL · #17 CH Tax burden16'446 #54 BL · #1542 CH Taxes62% #61 BL Warmest municipalities11.1 °C #2 BL · #47 CH Sunniest municipalities41.8% #18 BL · #1165 CH Rainiest municipalities831 mm #85 BL · #2032 CH Voter turnout44.6% #82 BL · #2019 CH Against Switzerland20% #10 BL · #541 CH Aligned with Switzerland80% #40 BL · #897 CH SVP strongholds23.5% #82 BL · #1634 CH SP strongholds36.7% #1 BL · #8 CH Centre strongholds8.8% #38 BL · #1335 CH FDP strongholds8.7% #67 BL · #1524 CH GLP strongholds5.8% #47 BL · #1008 CH Green strongholds9.4% #42 BL · #649 CH Largest by area2.5 km² #71 BL · #1944 CH Highest municipalities261 m #86 BL · #2079 CH Remotest municipalities22 min #81 BL · #2077 CH Best-connected municipalities22 min #6 BL · #33 CH Highest peaks279 m #86 BL · #2109 CH Highest-lying municipalities258 m #86 BL · #2107 CH Greatest vertical range34 m #86 BL · #2077 CH Steepest municipalities1.9° #86 BL · #2012 CH Solar potential50 GWh #11 BL · #320 CH Cheapest electricity31.98 Rp./kWh #67 BL · #1896 CH Most expensive electricity31.98 Rp./kWh #7 BL · #222 CH

Postal codes (1)

swisstopo

4127

Birsfelden

Localities

swisstopo · 1

Birsfelden4127

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Birsfelden?: The postal code of Birsfelden is 4127.
What is the tax rate in Birsfelden?: The municipal tax multiplier of Birsfelden is 62% (2026); canton BL levies 100%.
How much tax do you pay in Birsfelden?: A single person without children pays about 16'446 CHF income tax in Birsfelden on 100'000 CHF gross income (federal, cantonal, municipal), rank 54 of 86 in canton BL. Source: ESTV (2026).
How many residents does Birsfelden have?: Birsfelden has 10'401 residents (2025).
How many foreign residents live in Birsfelden?: Birsfelden has 3'619 foreign residents, a share of 34.79% (2025).

Map

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