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Demographics

BFS · 2025
Women
833 50.0%
Men
832 50.0%
Children & youth (0–19)
328 19.7%
Swiss citizens
1'548 93.0%
Foreign residents
117 7.0%
Population density
308 pop./km²
0–19 · 328 · 19.7%20–64 · 963 · 57.8%65+ · 374 · 22.5%
Foreign residents 7.0%0%64.0%
Population change 2025: −3 (−0.2%) · 17 births · 16 deaths · net migration −11
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 Verwaltungskreis Bern-Mittelland: 32.7% Yes
20.9% YesNo 79.1%
27.09.2026Popular Initiative 'Safeguard Swiss neutrality (Neutrality Initiative)'Federal● Rejected · 29.8% YesDistrict Verwaltungskreis Bern-Mittelland: 19.3% Yes
34.4% YesNo 65.6%
27.09.2026Volksinitiative «Berner Bildungsinitiative»Cantonal BE● Rejected · 40.1% YesDistrict Verwaltungskreis Bern-Mittelland: 47.0% Yes
33.9% YesNo 66.1%
14.06.2026Amendment to the Civilian Service ActFederal● Accepted · 52.5% YesDistrict Verwaltungskreis Bern-Mittelland: 42.9% Yes
59.9% YesNo 40.1%
14.06.2026Popular initiative: 'No to Switzerland of 10 million! (Sustainability Initiative)'Federal● Rejected · 45.2% YesDistrict Verwaltungskreis Bern-Mittelland: 33.6% Yes
63.7% YesNo 36.3%
14.06.2026Projektierungskredit für das Kunstmuseum Bern (Sanierung und Ersatzneubau)Cantonal BE● Rejected · 48.2% YesDistrict Verwaltungskreis Bern-Mittelland: 59.6% Yes
29.0% YesNo 71.0%
08.03.2026Federal Act on Individual TaxationFederal● Accepted · 54.3% YesDistrict Verwaltungskreis Bern-Mittelland: 61.8% Yes
40.3% YesNo 59.7%
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 Verwaltungskreis Bern-Mittelland: 39.7% Yes
19.5% YesNo 80.5%
08.03.2026Popular Initiative ‘200 francs is enough! (SBC Initiative)’Federal● Rejected · 38.1% YesDistrict Verwaltungskreis Bern-Mittelland: 28.0% Yes
40.7% YesNo 59.3%
08.03.2026Cash Initiative and Counter-Proposal: Deciding QuestionFederal● Rejected · 37.4% YesDistrict Verwaltungskreis Bern-Mittelland: 27.6% Yes
37.6% YesNo 62.4%
All federal votes →
Popular votes (sd-t-17-02) 2026 · Federal Statistical Office (FSO), retrieved 04.10.2026

Politics

National Council election 2023
SVP43.5% · strongest party
SVP43.5%
Mitte13.4%
SP12.2%
EDU6.7%
EVP6.4%
sd-t-17.02-NRW2023 2023 · Federal Statistical Office (FSO), retrieved 25.09.2026
Municipal tax multiplier189%
Cantonal tax multiplier297.5%
189%BE range 89%220%
Tax rank 278 of 334 in canton Bern
Tax burden
Single, 100'000 CHF gross income
17'503 CHF(17.5%)
Rank 275 of 334 in the canton · 2017 of 2110 in Switzerland
Median canton 17'048 CHF · median Switzerland 15'290 CHF
Cheapest Deisswil bei Münchenbuchsee 14'255 CHF · most expensive Schelten 18'510 CHF
Income tax as % of gross income
0%9%18%26%35%40k50k100k150k200k250k300k
100'000 CHF:17'503 CHF(~17.5%)
ZäziwilCanton range BernSwitzerland median
Show data table
Gross incomeZäziwilBernSwitzerland median
40'00010.3%8.3–10.9%5.4%
50'00012.2%9.8–13%7.8%
60'00013.7%11–14.5%10.5%
70'00014.8%12–15.7%11.9%
80'00015.6%12.6–16.5%13.1%
90'00016.5%13.4–17.5%14.1%
100'00017.5%14.3–18.5%15.3%
110'00018.4%15–19.4%16.3%
120'00019.3%15.8–20.3%17.2%
130'00020.1%16.5–21.2%18.1%
140'00020.9%17.2–22%19%
150'00021.6%17.9–22.8%19.7%
175'00023.5%19.5–24.7%21.6%
200'00025.1%20.9–26.3%23.2%
225'00026.5%22.2–27.8%24.6%
250'00027.8%23.3–29.1%25.8%
275'00028.8%24.3–30.2%26.8%
300'00029.8%25.1–31.2%27.4%
2026 · Federal Tax Administration (FTA), retrieved 24.09.2026

Climate

MeteoSwiss 1 km grid · 1991–2020
Annual mean temperature 1991–20208.4 °C
Precipitation 1991–20201'247 mm
8.4 °CCH range -5.5°14°
1991–2020 · MeteoSwiss, retrieved 28.08.2026

Terrain

swisstopo · DHM 40 m
Highest point
932 m
Mean elevation
770 m
Relief
266 m
Mean slope
11.7°
Flat share
21.0%
South-facing
21.8%
Above 2000 m
0.0%
Relief 266 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
15.7 GWh/yr
Roofs + façades
20.7 GWh/yr
≈ households powered
3'500
Per inhabitant
9'405 kWh/yr
16 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
25.59 Rp./kWh
Energy
7.97 Rp./kWh
Grid usage
11.91 Rp./kWh
Levies + grid surcharge
3.8 Rp./kWh
25.59 Rp./kWh10.5645.88
Canton median 27.95 Rp./kWhSwiss median 26.53 Rp./kWh
Network operator BKW Energie 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
Premium regionRegion 2
Standard model, deductible 300612 CHF/mo
Ø premium in canton Bern432 CHF/mo
Estimate Switzerland 2026465.3 CHF/mo

Premiums are set per canton and premium region. This area lies in premium region 2 of canton Bern. Shown is the average adult premium paid across the whole canton Bern (2024, BAG) — a region-specific average is not available in the cantonal data.

2024 · Federal Office of Public Health (FOPH), retrieved 12.09.2026

Housing

BFS · ARE
Vacancy rate
0.47 %
Second homes
8.7 %
Avg. rooms
3.8
Dwellings
854
Built before 194634.7%
Built since 200115.6%
0.47 %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
488
Workplaces
100
Services share
40.6 %
Jobs by sector: Primary 81 (16.6%) · Secondary 209 (42.8%) · Tertiary 198 (40.6%)
STATENT (Statistik der Unternehmensstruktur) 2024 · Federal Statistical Office (FSO), retrieved 24.09.2026

Agriculture

BFS · 2025
Farms
17
Organic share
0 %
Farmland
350 ha
Landwirtschaftliche Strukturerhebung 2025 · Federal Statistical Office (FSO), retrieved 19.09.2026

Accessibility

ARE · NPVM
Major centrePT 45 min · Car 35 min
AgglomerationPT 45 min · Car 34 min
Remoteness 272/334 in canton
National Passenger Transport Model (NPVM) 2025 · Federal Office for Spatial Development (ARE), retrieved 24.09.2026

Municipality

Wikidata · CC0
BFS municipality number628
Wikidata · continuously updated, retrieved 24.09.2026
Largest municipalities1'665 #142 BE · #1085 CHGrowing municipalities-0.2% #210 BE · #1520 CHShrinking municipalities-0.2% #125 BE · #586 CHJobs per resident0.29 #220 BE · #1318 CHFamilies & children19.7% #157 BE · #1240 CHAge structure22.5% #206 BE · #763 CHWomen share50% #194 BE · #917 CHForeign residents7% #229 BE · #1922 CHPopulation density308/km² #82 BE · #764 CHTax burden17'503 #279 BE · #2021 CHTaxes189% #278 BEWarmest municipalities8.4 °C #216 BE · #1592 CHSunniest municipalities43.9% #104 BE · #852 CHRainiest municipalities1'247 mm #107 BE · #591 CHVoter turnout51.8% #226 BE · #1610 CHAgainst Switzerland20.6% #74 BE · #457 CHAligned with Switzerland79.4% #128 BE · #947 CHSVP strongholds43.5% #157 BE · #471 CHSP strongholds12.2% #190 BE · #1266 CHCentre strongholds13.4% #20 BE · #925 CHFDP strongholds2.8% #286 BE · #1991 CHGLP strongholds5.7% #226 BE · #1024 CHGreen strongholds5.6% #208 BE · #1419 CHLargest by area5.4 km² #228 BE · #1491 CHHighest municipalities714 m #118 BE · #574 CHSecond homes8.7% #265 BE · #1458 CHOrganic farming0% #299 BE · #1669 CHBest-connected municipalities45 min #65 BE · #337 CHRemotest municipalities45 min #272 BE · #1760 CHHighest peaks932 m #152 BE · #788 CHHighest-lying municipalities770 m #133 BE · #645 CHGreatest vertical range266 m #175 BE · #1097 CHSteepest municipalities11.7° #135 BE · #796 CHSolar potential16 GWh #180 BE · #1211 CHSolar potential per capita9'405 kWh #248 BE · #1180 CHCheapest electricity25.59 Rp./kWh #109 BE · #603 CHMost expensive electricity25.59 Rp./kWh #196 BE · #1466 CH

Localities

swisstopo · 4
What is the postal code of Zäziwil?
Zäziwil has 4 postal codes: 3506, 3531, 3532, 3533.
What is the tax rate in Zäziwil?
The municipal tax multiplier of Zäziwil is 189% (2026); canton BE levies 297.5%.
How much tax do you pay in Zäziwil?
A single person without children pays about 17'503 CHF income tax in Zäziwil on 100'000 CHF gross income (federal, cantonal, municipal), rank 275 of 334 in canton BE. Source: ESTV (2026).
How many residents does Zäziwil have?
Zäziwil has 1'665 residents (2025).
How many foreign residents live in Zäziwil?
Zäziwil has 117 foreign residents, a share of 7.03% (2025).

Map

OpenStreetMap