What is the postal code of Kölliken?

Kölliken has 2 postal codes: 4813, 5742.

What is the tax rate in Kölliken?

The municipal tax multiplier of Kölliken is 119% (2026); canton AG levies 103%.

How much tax do you pay in Kölliken?

A single person without children pays about 13'539 CHF income tax in Kölliken on 100'000 CHF gross income (federal, cantonal, municipal), rank 167 of 196 in canton AG. Source: ESTV (2026).

How many residents does Kölliken have?

Kölliken has 5'133 residents (2025).

How many foreign residents live in Kölliken?

Kölliken has 1'264 foreign residents, a share of 24.62% (2025).

Switzerland · Canton AG · Bezirk Zofingen

Kölliken

4813–5742

Relief © swisstopo · TINITALY · geoland.at · LGL · IGN · swissTLM3D · swissTLMRegio

Demographics

BFS · 2025

Women

2'560 49.9%

Men

2'573 50.1%

Children & youth (0–19)

1'150 22.4%

Swiss citizens

3'869 75.4%

Foreign residents

1'264 24.6%

Population density

577 pop./km²

0–19 · 1'150 · 22.4%20–64 · 3'032 · 59.1%65+ · 951 · 18.5%

Foreign residents 24.6%0%64.0%

Population change 2025: +27 (+0.5%) · 47 births · 43 deaths · net migration +22

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

Vote results for Kölliken

BFS

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 Zofingen: 23.9% Yes

22.9% YesNo 77.1%

27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Zofingen: 33.3% Yes

40.0% YesNo 60.0%

14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Zofingen: 56.3% Yes

55.6% YesNo 44.5%

14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Zofingen: 56.1% Yes

61.2% YesNo 38.8%

14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Zofingen: 41.9% Yes

41.4% YesNo 58.6%

14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Zofingen: 54.8% Yes

66.7% YesNo 33.3%

08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Zofingen: 45.5% Yes

45.8% YesNo 54.2%

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 Zofingen: 22.2% Yes

21.6% YesNo 78.4%

08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Zofingen: 45.5% Yes

48.8% YesNo 51.2%

08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Zofingen: 41.4% Yes

46.0% YesNo 54.0%

All federal votes →

Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023

SVP42.1% · strongest party

SVP42.1%

SP15.1%

FDP9.9%

EVP7.8%

Mitte7.4%

sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026

Taxes 2026

ESTV

Municipal tax multiplier119%

Cantonal tax multiplier103%

119%AG range 48%127%

Tax rank 171 of 196 in canton Aargau

Tax burden

Single, 100'000 CHF gross income

13'539 CHF(13.5%)

Rank 167 of 196 in the canton · 702 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

Income tax as % of gross income

100'000 CHF:13'539 CHF(~13.5%)

KöllikenCanton range AargauSwitzerland median

Show data table

Gross income	Kölliken	Aargau	Switzerland median
40'000	5.4%	3.8–5.6%	5.4%
50'000	7.4%	5.2–7.7%	7.8%
60'000	9%	6.4–9.3%	10.5%
70'000	10.4%	7.4–10.7%	11.9%
80'000	11.5%	8.2–11.9%	13.1%
90'000	12.4%	8.9–12.8%	14.1%
100'000	13.5%	9.8–14%	15.3%
110'000	14.5%	10.5–14.9%	16.3%
120'000	15.3%	11.2–15.8%	17.2%
130'000	16%	11.7–16.5%	18.1%
140'000	16.8%	12.4–17.3%	19%
150'000	17.5%	13–18%	19.7%
175'000	19.2%	14.4–19.7%	21.6%
200'000	20.5%	15.5–21.1%	23.2%
225'000	21.8%	16.6–22.4%	24.6%
250'000	23%	17.6–23.6%	25.8%
275'000	23.9%	18.4–24.5%	26.8%
300'000	24.7%	19.1–25.3%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–20209.6 °C

Precipitation 1991–20201'131 mm

9.6 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

563 m

Mean elevation

458 m

Relief

144 m

Mean slope

4.7°

Flat share

59.3%

South-facing

9.8%

Above 2000 m

0.0%

Relief 144 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

41.5 GWh/yr

Roofs + façades

53.9 GWh/yr

≈ households powered

9'200

Per inhabitant

8'093 kWh/yr

42 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

26.48 Rp./kWh

Energy

10.99 Rp./kWh

Grid usage

10.64 Rp./kWh

Levies + grid surcharge

3.25 Rp./kWh

26.48 Rp./kWh10.5645.88

Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh

Network operator EWK Energie 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.

2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026

Health-insurance premiums

BAG · 2024

Standard model, deductible 300570 CHF/mo

Ø premium in canton Aargau392 CHF/mo

Estimate Switzerland 2026465.3 CHF/mo

Compare health insurers in Kölliken →Canton Aargau →Premiums explained →

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 · ARE

Vacancy rate

1.77 %

Second homes

8.3 %

Avg. rooms

4.1

Dwellings

2'313

Built before 194623.9%

Built since 200125.5%

1.77 %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

1'867

Workplaces

314

Services share

76.1 %

Jobs by sector: Primary 48 (2.6%) · Secondary 398 (21.3%) · Tertiary 1'421 (76.1%)

STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025

Farms

Organic share

20 %

Farmland

199 ha

Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM

Major centrePT 72 min · Car 47 min

AgglomerationPT 32 min · Car 16 min

Remoteness 50/196 in canton

National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0

BFS municipality number4276

Websitekoelliken.ch ↗

DistrictBezirk Zofingen

Wikidata · continuously updated, retrieved 24.09.2026

Where Kölliken ranks

Largest municipalities5'133 #38 AG · #422 CH Growing municipalities0.5% #109 AG · #1087 CH Shrinking municipalities0.5% #88 AG · #1026 CH Jobs per resident0.36 #76 AG · #1012 CH Families & children22.4% #24 AG · #451 CH Age structure18.5% #128 AG · #1551 CH Women share49.9% #71 AG · #1027 CH Foreign residents24.6% #67 AG · #574 CH Population density577/km² #72 AG · #449 CH Tax burden13'539 #168 AG · #703 CH Taxes119% #171 AG Warmest municipalities9.6 °C #147 AG · #906 CH Sunniest municipalities40% #149 AG · #1906 CH Rainiest municipalities1'131 mm #28 AG · #922 CH Voter turnout49.2% #169 AG · #1838 CH Against Switzerland18.6% #51 AG · #623 CH Aligned with Switzerland81.4% #119 AG · #834 CH SVP strongholds42.1% #102 AG · #553 CH SP strongholds15.1% #61 AG · #940 CH Centre strongholds7.4% #173 AG · #1521 CH FDP strongholds9.9% #144 AG · #1412 CH GLP strongholds4.8% #168 AG · #1251 CH Green strongholds6.9% #55 AG · #1126 CH Largest by area8.9 km² #54 AG · #1062 CH Highest municipalities427 m #101 AG · #1730 CH Second homes8.3% #84 AG · #1560 CH Organic farming20% #45 AG · #643 CH Best-connected municipalities72 min #153 AG · #1160 CH Remotest municipalities72 min #50 AG · #969 CH Highest peaks563 m #129 AG · #1672 CH Highest-lying municipalities458 m #104 AG · #1675 CH Greatest vertical range144 m #155 AG · #1621 CH Steepest municipalities4.7° #160 AG · #1630 CH Solar potential42 GWh #31 AG · #439 CH Solar potential per capita8'093 kWh #106 AG · #1448 CH Cheapest electricity26.48 Rp./kWh #62 AG · #918 CH Most expensive electricity26.48 Rp./kWh #135 AG · #1189 CH

Postal codes (2)

swisstopo

Localities

swisstopo · 2

Kölliken5742 Uerkheim4813

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Kölliken?: Kölliken has 2 postal codes: 4813, 5742.
What is the tax rate in Kölliken?: The municipal tax multiplier of Kölliken is 119% (2026); canton AG levies 103%.
How much tax do you pay in Kölliken?: A single person without children pays about 13'539 CHF income tax in Kölliken on 100'000 CHF gross income (federal, cantonal, municipal), rank 167 of 196 in canton AG. Source: ESTV (2026).
How many residents does Kölliken have?: Kölliken has 5'133 residents (2025).
How many foreign residents live in Kölliken?: Kölliken has 1'264 foreign residents, a share of 24.62% (2025).

Map

OpenStreetMap

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