Demographics
BFS · 2025Women
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%
Population change 2025: +21 (+0.4%) · 60 births · 25 deaths · net migration −2
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
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 Brugg: 26.3% Yes
20.6% YesNo 79.4%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Brugg: 28.2% Yes
35.7% YesNo 64.3%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Brugg: 57.0% Yes
63.0% YesNo 37.0%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Brugg: 49.2% Yes
55.0% YesNo 45.0%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Brugg: 44.0% Yes
44.2% YesNo 55.8%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Brugg: 52.4% Yes
55.4% YesNo 44.6%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Brugg: 48.0% Yes
52.1% YesNo 47.9%
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 Brugg: 25.8% Yes
16.0% YesNo 84.0%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Brugg: 40.4% Yes
55.5% YesNo 44.5%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Brugg: 35.3% Yes
44.4% YesNo 55.6%
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026
Politics
National Council election 2023SVP39.7% · strongest party
SVP39.7%
SP16.1%
FDP14.1%
Mitte10.5%
GLP7.2%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Taxes 2026
ESTVMunicipal tax multiplier117%
Cantonal tax multiplier103%
117%AG range 48%127%
Tax rank 154 of 196 in canton AargauTax 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
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 24.09.2026
Climate
MeteoSwiss 1 km grid · 1991–2020Annual 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 mHighest 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
Roof potential
35.1 GWh/yr
Roofs + façades
43.9 GWh/yr
≈ households powered
7'800
Per inhabitant
7'208 kWh/yr
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 24.09.2026
Electricity
ElCom · 2027Tariff H4
25.09 Rp./kWh
Energy
10.21 Rp./kWh
Grid usage
10.33 Rp./kWh
Levies + grid surcharge
2.82 Rp./kWh
25.09 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 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.
2027 · Federal Electricity Commission (ElCom), retrieved 12.09.2026
Health-insurance premiums
BAG · 2024Standard model, deductible 300570 CHF/mo
Ø premium in canton Aargau392 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo
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 · AREVacancy rate
3.61 %
Second homes
5.4 %
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 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 · 2024Jobs
2'086
Workplaces
173
Services share
56.3 %
Jobs by sector: Primary 16 (0.8%) · Secondary 895 (42.9%) · Tertiary 1'175 (56.3%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026
Agriculture
BFS · 2025Farms
2
Organic share
50 %
Farmland
71 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026
Accessibility
ARE · NPVMNational Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026
Municipality
Wikidata · CC0Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities4'868 #45 AG · #453 CHGrowing municipalities0.4% #116 AG · #1147 CHShrinking municipalities0.4% #81 AG · #965 CHJobs per resident0.43 #52 AG · #744 CHFamilies & children22.8% #12 AG · #353 CHAge structure16% #177 AG · #1899 CHWomen share48.1% #171 AG · #1849 CHForeign residents46.3% #4 AG · #22 CHPopulation density964/km² #36 AG · #238 CHTax burden13'432 #152 AG · #669 CHTaxes117% #154 AGWarmest municipalities10 °C #57 AG · #521 CHSunniest municipalities40.2% #79 AG · #1764 CHRainiest municipalities1'006 mm #177 AG · #1596 CHVoter turnout42.4% #192 AG · #2084 CHAgainst Switzerland14.7% #87 AG · #933 CHAligned with Switzerland85.3% #77 AG · #531 CHSVP strongholds39.7% #119 AG · #679 CHSP strongholds16.1% #45 AG · #832 CHCentre strongholds10.5% #114 AG · #1154 CHFDP strongholds14.1% #47 AG · #922 CHGLP strongholds7.2% #96 AG · #719 CHGreen strongholds3.8% #169 AG · #1767 CHLargest by area5.1 km² #118 AG · #1535 CHHighest municipalities402 m #130 AG · #1881 CHSecond homes5.4% #175 AG · #2021 CHOrganic farming50% #3 AG · #129 CHBest-connected municipalities70 min #137 AG · #1085 CHRemotest municipalities70 min #62 AG · #1034 CHHighest peaks624 m #95 AG · #1444 CHHighest-lying municipalities425 m #140 AG · #1890 CHGreatest vertical range243 m #72 AG · #1165 CHSteepest municipalities4.7° #158 AG · #1628 CHSolar potential35 GWh #46 AG · #562 CHSolar potential per capita7'208 kWh #142 AG · #1639 CHCheapest electricity25.09 Rp./kWh #17 AG · #440 CHMost expensive electricity25.09 Rp./kWh #176 AG · #1663 CH
Postal codes (1)
swisstopoLocalities
swisstopo · 1Nearby municipalities
swisstopo- 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
OpenStreetMapBirr compared with
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