What is the postal code of Oberwil?

The postal code of Oberwil is 4104.

What is the tax rate in Oberwil?

The municipal tax multiplier of Oberwil is 50% (2026); canton BL levies 100%.

How much tax do you pay in Oberwil?

A single person without children pays about 15'354 CHF income tax in Oberwil on 100'000 CHF gross income (federal, cantonal, municipal), rank 6 of 86 in canton BL. Source: ESTV (2026).

How many residents does Oberwil have?

Oberwil has 11'459 residents (2025).

How many foreign residents live in Oberwil?

Oberwil has 2'792 foreign residents, a share of 24.37% (2025).

Switzerland · Canton BL

Oberwil

4104

BL CANTON4104

Residents

11'459

Area

7.9 km²

Population density

1'452 pop./km²

Elevation

305 m a.s.l.

Tax multiplier

50%

Postal codes

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

Demographics

BFS · 2025

Women

5'993 52.3%

Men

5'466 47.7%

Children & youth (0–19)

2'321 20.3%

Swiss citizens

8'667 75.6%

Foreign residents

2'792 24.4%

Population density

1'452 pop./km²

0–19 · 2'321 · 20.3%20–64 · 6'385 · 55.7%65+ · 2'753 · 24.0%

Foreign residents 24.4%0%64.0%

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

Vote results for Oberwil

BFS

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

54.5% YesNo 45.5%

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

36.6% YesNo 63.4%

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

40.4% YesNo 59.6%

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

59.4% YesNo 40.6%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

55.6% YesNo 44.4%

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

27.1% YesNo 72.9%

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

31.1% YesNo 68.9%

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

31.0% YesNo 69.0%

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

75.6% YesNo 24.4%

All federal votes →

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

Politics

National Council election 2023

SVP23.7% · strongest party

SVP23.7%

SP22.6%

FDP18.7%

Mitte13.6%

GRÜNE10.4%

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

Taxes 2026

ESTV

Municipal tax multiplier50%

Cantonal tax multiplier100%

50%BL range 45%72%

Tax rank 6 of 86 in canton Basel-Landschaft

Tax burden

Single, 100'000 CHF gross income

15'354 CHF(15.4%)

Rank 6 of 86 in the canton · 1061 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:15'354 CHF(~15.4%)

OberwilCanton range Basel-LandschaftSwitzerland median

Show data table

Gross income	Oberwil	Basel-Landschaft	Switzerland median
40'000	5.9%	5.7–6.7%	5.4%
50'000	8%	7.8–9.2%	7.8%
60'000	10%	9.7–11.4%	10.5%
70'000	11.6%	11.3–13.2%	11.9%
80'000	13%	12.6–14.7%	13.1%
90'000	14.1%	13.7–16%	14.1%
100'000	15.4%	14.9–17.4%	15.3%
110'000	16.5%	16–18.6%	16.3%
120'000	17.5%	17–19.7%	17.2%
130'000	18.4%	17.9–20.7%	18.1%
140'000	19.3%	18.7–21.7%	19%
150'000	20.1%	19.5–22.5%	19.7%
175'000	21.9%	21.3–24.5%	21.6%
200'000	23.4%	22.8–26.2%	23.2%
225'000	24.8%	24.1–27.6%	24.6%
250'000	26%	25.3–28.8%	25.8%
275'000	26.9%	26.3–29.9%	26.8%
300'000	27.8%	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 1991–202010.8 °C

Precipitation 1991–2020912 mm

10.8 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

424 m

Mean elevation

348 m

Relief

133 m

Mean slope

4.3°

Flat share

68.2%

South-facing

13.9%

Above 2000 m

0.0%

Relief 133 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

62.1 GWh/yr

Roofs + façades

86.8 GWh/yr

≈ households powered

13'800

62 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

0.86 %

Avg. rooms

3.9

Dwellings

5'574

Built before 19468.1%

Built since 200126.1%

0.86 %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 20 min · Car 15 min

AgglomerationPT 20 min · Car 15 min

Remoteness 84/86 in canton

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

Municipality

Wikidata · CC0

Websiteoberwil.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities11'459 #8 BL · #145 CH Families & children20.3% #23 BL · #1034 CH Age structure24% #37 BL · #516 CH Women share52.3% #4 BL · #97 CH Foreign residents24.4% #22 BL · #584 CH Population density1'452/km² #10 BL · #129 CH Tax burden15'354 #6 BL · #1061 CH Taxes50% #6 BL Warmest municipalities10.8 °C #16 BL · #128 CH Sunniest municipalities42.2% #9 BL · #1093 CH Rainiest municipalities912 mm #76 BL · #1915 CH Voter turnout54.9% #35 BL · #1089 CH Against Switzerland7% #40 BL · #1374 CH Aligned with Switzerland93% #10 BL · #98 CH SVP strongholds23.7% #81 BL · #1620 CH SP strongholds22.6% #30 BL · #289 CH Centre strongholds13.6% #15 BL · #915 CH FDP strongholds18.7% #4 BL · #542 CH GLP strongholds8.6% #9 BL · #498 CH Green strongholds10.4% #26 BL · #507 CH Largest by area7.9 km² #21 BL · #1150 CH Highest municipalities305 m #79 BL · #2051 CH Remotest municipalities20 min #84 BL · #2089 CH Best-connected municipalities20 min #3 BL · #21 CH Highest peaks424 m #77 BL · #2073 CH Highest-lying municipalities348 m #74 BL · #2071 CH Greatest vertical range133 m #75 BL · #1676 CH Steepest municipalities4.3° #81 BL · #1693 CH Solar potential62 GWh #7 BL · #225 CH Cheapest electricity31.98 Rp./kWh #72 BL · #1901 CH Most expensive electricity31.98 Rp./kWh #12 BL · #227 CH

Postal codes (1)

swisstopo

4104

Oberwil BL

Localities

swisstopo · 1

Oberwil BL4104

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Oberwil?: The postal code of Oberwil is 4104.
What is the tax rate in Oberwil?: The municipal tax multiplier of Oberwil is 50% (2026); canton BL levies 100%.
How much tax do you pay in Oberwil?: A single person without children pays about 15'354 CHF income tax in Oberwil on 100'000 CHF gross income (federal, cantonal, municipal), rank 6 of 86 in canton BL. Source: ESTV (2026).
How many residents does Oberwil have?: Oberwil has 11'459 residents (2025).
How many foreign residents live in Oberwil?: Oberwil has 2'792 foreign residents, a share of 24.37% (2025).

Map

OpenStreetMap

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