Which municipalities belong to Bezirk Aarau?

Bezirk Aarau comprises 12 municipalities: Aarau, Suhr, Oberentfelden, Gränichen, Buchs, Küttigen, Erlinsbach, Unterentfelden, Muhen, Hirschthal, Biberstein, Densbüren. Together they have 85'665 residents (BFS, 2025).

Which canton is Bezirk Aarau in?

Bezirk Aarau lies in the canton of Aargau, which is divided into 11 districts.

How many people live in Bezirk Aarau?

Bezirk Aarau has 85'665 residents (BFS STATPOP, 2025) — the sum of its 12 municipalities; the largest is Aarau with 22'932.

Does Bezirk Aarau have its own tax rate?

No. Tax rates are set by municipalities. In Bezirk Aarau the municipal rate ranges from 89 % (Erlinsbach (AG)) to 118 % (Buchs (AG)).

Switzerland · Canton AG · District

Bezirk Aarau

Aargau

Bezirk Aarau is one of 11 districts of the canton of Aargau and comprises 12 municipalities with 85'665 residents in all (BFS, 2025). A district is an administrative unit of the canton — a court and administrative area, not a postal delivery area: postal codes and localities follow delivery routes and can cross district borders.

Residents

85'665

sum of its municipalities

sum of its municipalities

BFS district number

1901

BFS

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

Municipalities in Bezirk Aarau

BFS · 12

Federal Statistical Office (FSO), retrieved 12.08.2026

Votes in Bezirk Aarau

district results as published by BFS

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

51.7% YesNo 48.3%

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

43.2% YesNo 56.8%

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

45.3% YesNo 54.7%

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

67.7% YesNo 32.3%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

53.7% YesNo 46.3%

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

31.0% YesNo 69.0%

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

35.4% YesNo 64.6%

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

31.8% YesNo 68.2%

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

75.8% YesNo 24.3%

08.03.2026Volksinitiative «Ja zu einer unabhängigen, freien Schweizer Währung mit Münzen oder Banknoten (Bargeld ist Freiheit)»Federal● Rejected · 45.6% Yes

38.1% YesNo 61.9%

All federal votes →

Federal Statistical Office (FSO), retrieved 12.08.2026

Politics

National Council election 2023 · sum of its municipalities

SVP28.3% · strongest party

SVP28.3%

SP21.3%

FDP15.4%

GLP9.3%

GRÜNE9.0%

Mitte8.2%

EVP4.7%

Übrige2.8%

EDU0.9%

PdA/Sol.0.2%

Tax rate in the district

ESTV 2026

Erlinsbach (AG)

89 %

median of its municipalities

111.5 %

Buchs (AG)

118 %

A district has no tax rate of its own. Rates range from 89 % % in Erlinsbach (AG) to 118 % % in Buchs (AG) (median 111.5 % %).

Tax burden (single, CHF 100,000): 11.9 % in Erlinsbach (AG) to 13.5 % in Buchs (AG) (ESTV 2'026)

Housing

BFS

Vacancy rate

0.88 %

Dwellings

41'343

Avg. rooms

3.8

Built before 1946

17.6%

Vacancy rate: published by BFS for the district (2025) · Dwellings: sum of its municipalities (2024)

Population change

BFS · 2025 · sum of its municipalities

Population change 2025

+744 +0.9%

births

751

deaths

685

net migration

+636

BEVNAT (Statistik der natürlichen Bevölkerungsbewegung) 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Economy

BFS · 2024 · sum of its municipalities

Jobs

63'608

Workplaces

5'889

Services share

82.6 %

Jobs by sector: Primary 535 (0.8%) · Secondary 10'509 (16.5%) · Tertiary 52'564 (82.6%)

STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 11.09.2026

Agriculture

BFS · 2025 · sum of its municipalities

Farms

134

Organic share

17.9 %

Farmland

2'996 ha

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

Climate · Terrain

MeteoSchweiz · swisstopo

Annual mean temperature

9.6 °C

Precipitation

1'072 mm

Elevation

356–903 m

Flat share

40.6%

Climate: area-weighted over its municipalities · Terrain: swissALTIRegio 40 m, zonal over the district polygon

Energy · Accessibility

BFE · ElCom · ARE

Solar potential

523 GWh

Electricity

25.4 Rp./kWh

Public transport to centre

63 min

Road to centre

50 min

Solar potential: sum of its municipalities · Electricity: median of its municipalities (25.35–34.08 Rp./kWh, 2027). ElCom publishes a median per municipality; the district value is our median of those. · Accessibility: median of its municipalities

Where the municipalities of Bezirk Aarau rank

sum of its municipalities

Municipalities	Largest municipalities	Foreign residents	Tax burden
Aarau	2/196	72/196	34/196
Suhr	10/196	18/196	122/196
Oberentfelden	16/196	16/196	129/196
Gränichen	22/196	65/196	118/196
Buchs	23/196	15/196	158/196
Küttigen	29/196	139/196	82/196
Erlinsbach	49/196	126/196	22/196
Unterentfelden	51/196	35/196	131/196
Muhen	61/196	151/196	119/196
Hirschthal	116/196	177/196	56/196
Biberstein	124/196	188/196	50/196
Densbüren	179/196	180/196	153/196

Which municipalities belong to Bezirk Aarau?: Bezirk Aarau comprises 12 municipalities: Aarau, Suhr, Oberentfelden, Gränichen, Buchs, Küttigen, Erlinsbach, Unterentfelden, Muhen, Hirschthal, Biberstein, Densbüren. Together they have 85'665 residents (BFS, 2025).
Which canton is Bezirk Aarau in?: Bezirk Aarau lies in the canton of Aargau, which is divided into 11 districts.
How many people live in Bezirk Aarau?: Bezirk Aarau has 85'665 residents (BFS STATPOP, 2025) — the sum of its 12 municipalities; the largest is Aarau with 22'932.
Does Bezirk Aarau have its own tax rate?: No. Tax rates are set by municipalities. In Bezirk Aarau the municipal rate ranges from 89 % (Erlinsbach (AG)) to 118 % (Buchs (AG)).
How did Bezirk Aarau vote in the latest federal vote?: On 14.06.2026, Bezirk Aarau voted 51.7 % yes on “Änderung des Bundesgesetzes über den zivilen Ersatzdienst (Zivildienstgesetz, ZDG)” (Accepted) — the district figure BFS publishes.

Districts exist in 17 cantons; UR, OW, NW, GL, ZG, BS, AI, NE and GE have no such level.

Bezirk Aarau

Municipalities in Bezirk Aarau

Votes in Bezirk Aarau

Politics

Tax rate in the district

Housing

Population change

Economy

Agriculture

Climate · Terrain

Energy · Accessibility

Where the municipalities of Bezirk Aarau rank

Postal codes in Bezirk Aarau

Localities in Bezirk Aarau

Map

Neighbouring districts

Other districts in the canton of Aargau

Frequently asked questions