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Demographics

BFS · 2025
Women
2'291 50.0%
Men
2'288 50.0%
Children & youth (0–19)
1'006 22.0%
Swiss citizens
3'159 69.0%
Foreign residents
1'420 31.0%
Population density
1'590 pop./km²
0–19 · 1'006 · 22.0%20–64 · 2'682 · 58.6%65+ · 891 · 19.5%
Foreign residents 31.0%0%64.0%
Population change 2025: +29 (+0.6%) · 41 births · 38 deaths · net migration +35
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 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Bezirk Aarau: 23.9% Yes
26.4% YesNo 73.6%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Aarau: 51.7% Yes
52.8% YesNo 47.2%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Aarau: 43.2% Yes
46.0% YesNo 54.0%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Aarau: 45.3% Yes
43.7% YesNo 56.4%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Aarau: 67.7% Yes
72.5% YesNo 27.5%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Aarau: 53.7% Yes
47.2% YesNo 52.9%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Aarau: 35.4% Yes
36.9% YesNo 63.2%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Aarau: 31.8% Yes
31.9% YesNo 68.1%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP31.2% · strongest party
SVP31.2%
SP18.7%
FDP15.3%
GLP9.2%
Mitte8.8%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier113%
Cantonal tax multiplier103%
113%AG range 48%127%
Tax rank 129 of 196 in canton Aargau
Tax burden
Single, 100'000 CHF gross income
13'219 CHF(13.2%)
Rank 124 of 196 in the canton · 584 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
0%8%15%23%30%40k50k100k150k200k250k300k
100'000 CHF:13'219 CHF(~13.2%)
UnterentfeldenCanton range AargauSwitzerland median
Show data table
Gross incomeUnterentfeldenAargauSwitzerland median
40'0005.3%3.8–5.6%5.4%
50'0007.2%5.2–7.7%7.8%
60'0008.8%6.4–9.3%10.5%
70'00010.2%7.4–10.7%11.9%
80'00011.2%8.2–11.9%13.1%
90'00012.1%8.9–12.8%14.1%
100'00013.2%9.8–14%15.3%
110'00014.2%10.5–14.9%16.3%
120'00014.9%11.2–15.8%17.2%
130'00015.7%11.7–16.5%18.1%
140'00016.4%12.4–17.3%19%
150'00017.1%13–18%19.7%
175'00018.7%14.4–19.7%21.6%
200'00020.1%15.5–21.1%23.2%
225'00021.4%16.6–22.4%24.6%
250'00022.5%17.6–23.6%25.8%
275'00023.5%18.4–24.5%26.8%
300'00024.2%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 1991–20209.7 °C
Precipitation 1991–20201'111 mm
9.7 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
487 m
Mean elevation
429 m
Relief
83 m
Mean slope
3.2°
Flat share
76.0%
South-facing
15.1%
Above 2000 m
0.0%
Relief 83 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
34.1 GWh/yr
Roofs + façades
43.7 GWh/yr
≈ households powered
7'600
Per inhabitant
7'445 kWh/yr
34 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
25.36 Rp./kWh
Energy
9.68 Rp./kWh
Grid usage
10.88 Rp./kWh
Levies + grid surcharge
3.15 Rp./kWh
25.36 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator Eniwa 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
Standard 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 · ARE
Vacancy rate
1.09 %
Second homes
7.6 %
Avg. rooms
3.9
Dwellings
2'112
Built before 19468.5%
Built since 200130.4%
1.09 %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
2'938
Workplaces
245
Services share
74.5 %
Jobs by sector: Primary 22 (0.7%) · Secondary 728 (24.8%) · Tertiary 2'188 (74.5%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025
Farms
3
Organic share
0 %
Farmland
45 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM
Major centrePT 57 min · Car 54 min
AgglomerationPT 16 min · Car 10 min
Remoteness 139/196 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number4013
DistrictBezirk Aarau
Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities4'579 #51 AG · #484 CHGrowing municipalities0.6% #101 AG · #1005 CHShrinking municipalities0.6% #95 AG · #1106 CHJobs per resident0.64 #22 AG · #285 CHFamilies & children22% #34 AG · #545 CHAge structure19.5% #102 AG · #1340 CHWomen share50% #56 AG · #946 CHForeign residents31% #35 AG · #270 CHPopulation density1'590/km² #9 AG · #108 CHTax burden13'219 #131 AG · #591 CHTaxes113% #129 AGWarmest municipalities9.7 °C #109 AG · #811 CHSunniest municipalities40.1% #106 AG · #1823 CHRainiest municipalities1'111 mm #70 AG · #1045 CHVoter turnout62.9% #15 AG · #338 CHAgainst Switzerland8.8% #137 AG · #1293 CHAligned with Switzerland91.2% #22 AG · #192 CHSVP strongholds31.2% #172 AG · #1197 CHSP strongholds18.7% #24 AG · #565 CHCentre strongholds8.8% #140 AG · #1340 CHFDP strongholds15.3% #29 AG · #796 CHGLP strongholds9.2% #44 AG · #409 CHGreen strongholds7% #48 AG · #1104 CHLargest by area2.9 km² #174 AG · #1884 CHHighest municipalities418 m #113 AG · #1794 CHSecond homes7.6% #108 AG · #1707 CHOrganic farming0% #139 AG · #1834 CHBest-connected municipalities57 min #54 AG · #685 CHRemotest municipalities57 min #139 AG · #1430 CHHighest peaks487 m #174 AG · #1923 CHHighest-lying municipalities429 m #135 AG · #1876 CHGreatest vertical range83 m #188 AG · #1922 CHSteepest municipalities3.2° #186 AG · #1880 CHSolar potential34 GWh #50 AG · #587 CHSolar potential per capita7'445 kWh #129 AG · #1580 CHCheapest electricity25.36 Rp./kWh #34 AG · #502 CHMost expensive electricity25.36 Rp./kWh #163 AG · #1607 CH

Localities

swisstopo · 1
What is the postal code of Unterentfelden?
The postal code of Unterentfelden is 5035.
What is the tax rate in Unterentfelden?
The municipal tax multiplier of Unterentfelden is 113% (2026); canton AG levies 103%.
How much tax do you pay in Unterentfelden?
A single person without children pays about 13'219 CHF income tax in Unterentfelden on 100'000 CHF gross income (federal, cantonal, municipal), rank 124 of 196 in canton AG. Source: ESTV (2026).
How many residents does Unterentfelden have?
Unterentfelden has 4'579 residents (2025).
How many foreign residents live in Unterentfelden?
Unterentfelden has 1'420 foreign residents, a share of 31.01% (2025).

Map

OpenStreetMap