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Demographics

BFS · 2025
Women
2'482 49.7%
Men
2'516 50.3%
Children & youth (0–19)
1'126 22.5%
Swiss citizens
3'490 69.8%
Foreign residents
1'508 30.2%
Population density
1'510 pop./km²
0–19 · 1'126 · 22.5%20–64 · 3'061 · 61.2%65+ · 811 · 16.2%
Foreign residents 30.2%0%64.0%
Population change 2025: +40 (+0.8%) · 43 births · 33 deaths · net migration +30
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 Lenzburg: 31.6% Yes
25.0% YesNo 75.0%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Bezirk Lenzburg: 56.9% Yes
51.5% YesNo 48.5%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Bezirk Lenzburg: 54.0% Yes
46.5% YesNo 53.5%
14.06.2026Aargauische Volksinitiative "Bildungsqualität sichern – JETZT!" vom 28. August 2024Cantonal AG● Rejected · 42.6% YesDistrict Bezirk Lenzburg: 42.3% Yes
50.3% YesNo 49.7%
14.06.2026Verkehrsinfrastruktur-Entwicklung Raum Suhr (VERAS); Verpflichtungskredit vom 16. Dezember 2025Cantonal AG● Accepted · 54.3% YesDistrict Bezirk Lenzburg: 60.2% Yes
58.0% YesNo 42.1%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Bezirk Lenzburg: 48.8% Yes
52.9% YesNo 47.2%
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 Lenzburg: 22.8% Yes
28.0% YesNo 72.0%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Bezirk Lenzburg: 44.0% Yes
38.9% YesNo 61.1%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Bezirk Lenzburg: 37.2% Yes
34.2% YesNo 65.8%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP30.6% · strongest party
SVP30.6%
SP22.0%
FDP13.6%
GLP11.1%
Mitte8.6%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier117%
Cantonal tax multiplier103%
117%AG range 48%127%
Tax rank 155 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
0%8%15%23%30%40k50k100k150k200k250k300k
100'000 CHF:13'432 CHF(~13.4%)
NiederlenzCanton range AargauSwitzerland median
Show data table
Gross incomeNiederlenzAargauSwitzerland median
40'0005.4%3.8–5.6%5.4%
50'0007.3%5.2–7.7%7.8%
60'0009%6.4–9.3%10.5%
70'00010.3%7.4–10.7%11.9%
80'00011.4%8.2–11.9%13.1%
90'00012.3%8.9–12.8%14.1%
100'00013.4%9.8–14%15.3%
110'00014.4%10.5–14.9%16.3%
120'00015.2%11.2–15.8%17.2%
130'00015.9%11.7–16.5%18.1%
140'00016.7%12.4–17.3%19%
150'00017.4%13–18%19.7%
175'00019%14.4–19.7%21.6%
200'00020.4%15.5–21.1%23.2%
225'00021.7%16.6–22.4%24.6%
250'00022.8%17.6–23.6%25.8%
275'00023.8%18.4–24.5%26.8%
300'00024.5%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 1991–202010 °C
Precipitation 1991–20201'013 mm
10 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
428 m
Mean elevation
389 m
Relief
77 m
Mean slope
3.1°
Flat share
80.2%
South-facing
1.3%
Above 2000 m
0.0%
Relief 77 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
34.5 GWh/yr
Roofs + façades
44.3 GWh/yr
≈ households powered
7'700
Per inhabitant
6'903 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 · 2027
Tariff H4
31.23 Rp./kWh
Energy
13.01 Rp./kWh
Grid usage
13.83 Rp./kWh
Levies + grid surcharge
2.8 Rp./kWh
31.23 Rp./kWh10.5645.88
Canton median 26.88 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator RTB Regionale Technische Betriebe
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
0.19 %
Second homes
6.7 %
Avg. rooms
4
Dwellings
2'157
Built before 194618.3%
Built since 200122.3%
0.19 %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
1'523
Workplaces
237
Services share
55 %
Jobs by sector: Primary 9 (0.6%) · Secondary 676 (44.4%) · Tertiary 838 (55.0%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

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

Accessibility

ARE · NPVM
Major centrePT 58 min · Car 45 min
AgglomerationPT 18 min · Car 9 min
Remoteness 138/196 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number4204
Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities4'998 #42 AG · #434 CHGrowing municipalities0.8% #93 AG · #898 CHShrinking municipalities0.8% #105 AG · #1214 CHJobs per resident0.3 #97 AG · #1295 CHFamilies & children22.5% #19 AG · #423 CHAge structure16.2% #175 AG · #1881 CHWomen share49.7% #83 AG · #1146 CHForeign residents30.2% #42 AG · #303 CHPopulation density1'510/km² #11 AG · #119 CHTax burden13'432 #157 AG · #674 CHTaxes117% #155 AGWarmest municipalities10 °C #64 AG · #528 CHSunniest municipalities40.1% #124 AG · #1841 CHRainiest municipalities1'013 mm #174 AG · #1569 CHVoter turnout54.2% #117 AG · #1333 CHAgainst Switzerland2.9% #165 AG · #1456 CHAligned with Switzerland97.1% #2 AG · #7 CHSVP strongholds30.6% #176 AG · #1235 CHSP strongholds22% #12 AG · #327 CHCentre strongholds8.6% #146 AG · #1363 CHFDP strongholds13.6% #57 AG · #978 CHGLP strongholds11.1% #15 AG · #213 CHGreen strongholds8.1% #27 AG · #865 CHLargest by area3.3 km² #166 AG · #1829 CHHighest municipalities387 m #148 AG · #1945 CHSecond homes6.7% #141 AG · #1872 CHOrganic farming0% #175 AG · #1870 CHBest-connected municipalities58 min #66 AG · #721 CHRemotest municipalities58 min #138 AG · #1407 CHHighest peaks428 m #189 AG · #2067 CHHighest-lying municipalities389 m #170 AG · #2008 CHGreatest vertical range77 m #190 AG · #1941 CHSteepest municipalities3.1° #188 AG · #1892 CHSolar potential35 GWh #49 AG · #579 CHSolar potential per capita6'903 kWh #148 AG · #1696 CHCheapest electricity31.23 Rp./kWh #191 AG · #1952 CHMost expensive electricity31.23 Rp./kWh #6 AG · #155 CH

Localities

swisstopo · 2
What is the postal code of Niederlenz?
Niederlenz has 2 postal codes: 5103, 5702.
What is the tax rate in Niederlenz?
The municipal tax multiplier of Niederlenz is 117% (2026); canton AG levies 103%.
How much tax do you pay in Niederlenz?
A single person without children pays about 13'432 CHF income tax in Niederlenz on 100'000 CHF gross income (federal, cantonal, municipal), rank 152 of 196 in canton AG. Source: ESTV (2026).
How many residents does Niederlenz have?
Niederlenz has 4'998 residents (2025).
How many foreign residents live in Niederlenz?
Niederlenz has 1'508 foreign residents, a share of 30.17% (2025).

Map

OpenStreetMap