What is the postal code of Birr?

The postal code of Birr is 5242.

What is the tax rate in Birr?

The municipal tax multiplier of Birr is 117% (2026); canton AG levies 103%.

How much tax do you pay in Birr?

A single person without children pays about 13'432 CHF income tax in Birr on 100'000 CHF gross income (federal, cantonal, municipal), rank 152 of 196 in canton AG. Source: ESTV (2026).

How many residents does Birr have?

Birr has 4'868 residents (2025).

How many foreign residents live in Birr?

Birr has 2'253 foreign residents, a share of 46.28% (2025).

Switzerland · Canton AG

Birr

5242

AG CANTON5242

Residents

4'868

Area

5.1 km²

Population density

964 pop./km²

Elevation

402 m a.s.l.

Terrain up to

624 m a.s.l.

Tax multiplier

117%

Postal codes

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

Demographics

BFS · 2025

Women

2'343 48.1%

Men

2'525 51.9%

Children & youth (0–19)

1'109 22.8%

Swiss citizens

2'615 53.7%

Foreign residents

2'253 46.3%

Population density

964 pop./km²

0–19 · 1'109 · 22.8%20–64 · 2'981 · 61.2%65+ · 778 · 16.0%

Foreign residents 46.3%0%64.0%

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

Vote results for Birr

BFS

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

63.0% YesNo 37.0%

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

55.0% YesNo 45.0%

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

44.2% YesNo 55.8%

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

55.4% YesNo 44.6%

08.03.2026Bundesgesetz über die IndividualbesteuerungFederal● Accepted · 54.3% Yes

52.1% YesNo 47.9%

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

16.0% YesNo 84.0%

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

55.5% YesNo 44.5%

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

44.4% YesNo 55.6%

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

70.0% YesNo 30.0%

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

50.5% YesNo 49.5%

All federal votes →

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

Politics

National Council election 2023

SVP39.7% · strongest party

SVP39.7%

SP16.1%

FDP14.1%

Mitte10.5%

GLP7.2%

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

Taxes 2026

ESTV

Municipal tax multiplier117%

Cantonal tax multiplier103%

117%AG range 48%127%

Tax rank 154 of 196 in canton Aargau

Tax burden

Single, 100'000 CHF gross income

13'432 CHF(13.4%)

Rank 152 of 196 in the canton · 669 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:13'432 CHF(~13.4%)

BirrCanton range AargauSwitzerland median

Show data table

Gross income	Birr	Aargau	Switzerland median
40'000	5.4%	3.8–5.6%	5.4%
50'000	7.3%	5.2–7.7%	7.8%
60'000	9%	6.4–9.3%	10.5%
70'000	10.3%	7.4–10.7%	11.9%
80'000	11.4%	8.2–11.9%	13.1%
90'000	12.3%	8.9–12.8%	14.1%
100'000	13.4%	9.8–14%	15.3%
110'000	14.4%	10.5–14.9%	16.3%
120'000	15.2%	11.2–15.8%	17.2%
130'000	15.9%	11.7–16.5%	18.1%
140'000	16.7%	12.4–17.3%	19%
150'000	17.4%	13–18%	19.7%
175'000	19%	14.4–19.7%	21.6%
200'000	20.4%	15.5–21.1%	23.2%
225'000	21.7%	16.6–22.4%	24.6%
250'000	22.8%	17.6–23.6%	25.8%
275'000	23.8%	18.4–24.5%	26.8%
300'000	24.5%	19.1–25.3%	27.4%

2026 · Federal Tax Administration (FTA), retrieved 31.08.2026

Climate

MeteoSwiss 1 km grid · 1991–2020

Annual mean temperature 1991–202010 °C

Precipitation 1991–20201'006 mm

10 °CCH range -5.5°14°

1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m

Highest point

624 m

Mean elevation

425 m

Relief

243 m

Mean slope

4.7°

Flat share

70.9%

South-facing

0.8%

Above 2000 m

0.0%

Relief 243 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

35.1 GWh/yr

Roofs + façades

43.9 GWh/yr

≈ households powered

7'800

35 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

26.82 Rp./kWh

Energy

12.11 Rp./kWh

Grid usage

10.16 Rp./kWh

Levies + grid surcharge

2.82 Rp./kWh

26.82 Rp./kWh9.6443.61

Canton median 27.73 Rp./kWhSwiss median 27.7 Rp./kWh

Network operator IBB Strom 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

3.61 %

Avg. rooms

3.8

Dwellings

2'022

Built before 19466.6%

Built since 200124.7%

3.61 %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 70 min · Car 40 min

AgglomerationPT 40 min · Car 20 min

Remoteness 62/196 in canton

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

Municipality

Wikidata · CC0

Websitebirr.ch ↗

Wikidata · continuously updated, retrieved 31.08.2026

Rankings

Largest municipalities4'868 #45 AG · #453 CH Families & children22.8% #12 AG · #353 CH Age structure16% #177 AG · #1899 CH Women share48.1% #171 AG · #1849 CH Foreign residents46.3% #4 AG · #22 CH Population density964/km² #36 AG · #238 CH Tax burden13'432 #152 AG · #669 CH Taxes117% #154 AG Warmest municipalities10 °C #57 AG · #521 CH Sunniest municipalities40.2% #79 AG · #1764 CH Rainiest municipalities1'006 mm #177 AG · #1596 CH Voter turnout41.5% #193 AG · #2086 CH Against Switzerland15% #87 AG · #933 CH Aligned with Switzerland85% #77 AG · #531 CH SVP strongholds39.7% #119 AG · #679 CH SP strongholds16.1% #45 AG · #828 CH Centre strongholds10.5% #114 AG · #1150 CH FDP strongholds14.1% #47 AG · #919 CH GLP strongholds7.2% #96 AG · #718 CH Green strongholds3.8% #169 AG · #1762 CH Largest by area5.1 km² #118 AG · #1535 CH Highest municipalities402 m #131 AG · #1882 CH Remotest municipalities70 min #62 AG · #1034 CH Best-connected municipalities70 min #137 AG · #1084 CH Highest peaks624 m #95 AG · #1444 CH Highest-lying municipalities425 m #140 AG · #1890 CH Greatest vertical range243 m #72 AG · #1165 CH Steepest municipalities4.7° #158 AG · #1628 CH Solar potential35 GWh #46 AG · #562 CH Cheapest electricity26.82 Rp./kWh #44 AG · #558 CH Most expensive electricity26.82 Rp./kWh #149 AG · #1545 CH

Postal codes (1)

swisstopo

5242

Birr

Localities

swisstopo · 1

Birr5242

Nearby municipalities

swisstopo

Frequently asked questions

What is the postal code of Birr?: The postal code of Birr is 5242.
What is the tax rate in Birr?: The municipal tax multiplier of Birr is 117% (2026); canton AG levies 103%.
How much tax do you pay in Birr?: A single person without children pays about 13'432 CHF income tax in Birr on 100'000 CHF gross income (federal, cantonal, municipal), rank 152 of 196 in canton AG. Source: ESTV (2026).
How many residents does Birr have?: Birr has 4'868 residents (2025).
How many foreign residents live in Birr?: Birr has 2'253 foreign residents, a share of 46.28% (2025).

Map

OpenStreetMap