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Municipal profile

Coat of arms of Sion

Sion

Canton: Valais (VS)

Civiora Index

Derived from official data

65/100

Above the median

National rank: 543 / 2’110 · Top 26% nationally

Taxes65/100
Premiums50/100
Electricity54/100
Housing56/100
PT service94/100

Confidence level: high · v1.1.0 · Civiora Index computed from official public data. Proprietary, non-official index. Understand the index

Median altitude515 m
Area34.9 km²
Postcode1950
FSO no.6266
DistrictDistrict de Sion
Tax burden11.9 %Single, CHF 80’000 · 2026 less than SwitzerlandSwiss median: 13.1 %
Electricity price26.6 ct./kWhH4 · 2027 in line with SwitzerlandSwiss median: 26.9 ct./kWh
Health insurance premiums602 CHF/monthAdult · 2027 in line with SwitzerlandSwiss median: 599 CHF
Population37’844+8.2 % over 5 years (2020–2025) more than SwitzerlandSwiss median: +4.4 %
Vacancy rate0.93 %01.06.2026 more than SwitzerlandSwiss median: 0.83 %
Public transport stops130At least one rail stop

Taxes: tax burden by scenario

Tax burden ranking →Official

On a salary of CHF 80’000 a year, a single person in Sion pays 11.9% of their gross income in tax, or about CHF 9’490 a year. That is CHF 1’000 less than in the median Swiss municipality.

SionSwiss median
Single, CHF 80’000 approx. 9’490 CHF/year1’000 CHF/year less
11.9 %
13.1 %
Single, CHF 120’000 approx. 19’810 CHF/year890 CHF/year less
16.5 %
17.2 %
Married couple, CHF 120’000 approx. 12’080 CHF/year1’380 CHF/year less
10.1 %
11.2 %
Family, 2 children, CHF 150’000 approx. 11’670 CHF/year3’240 CHF/year less
7.8 %
9.9 %
Retiree, CHF 80’000 approx. 12’100 CHF/year880 CHF/year less
15.1 %
16.2 %

2026 tax burden in % of gross income (federal, cantonal and communal taxes; earned income, no wealth, no church tax). Calculation FTA, Swiss tax calculator.

Federal Tax Administration (FTA)Tax burden 2026: Swiss tax calculator (model cases)View source

Electricity

2027 tariff ranking →Official

A typical household (profile H4, 4’500 kWh a year) in Sion pays 26.56 ct. per kWh, or about CHF 1’200 a year. That is close to the median Swiss municipality.

26.56 ct./kWh

in line with SwitzerlandSwiss median: 26.91 ct./kWh

Tariff breakdown

Energy (the electricity itself) 13.00Grid (delivery to the meter) 8.33Levies and surcharge (public charges and levies) 5.23ct./kWh

Federal Electricity Commission (ElCom)Electricity tariffs 2027, profile H4, standard productView source

Health insurance premiums

2027 premium ranking →Derived from official data

An adult in Sion pays a median CHF 602 a month for basic health insurance, or about CHF 7’220 a year (CHF 300 deductible, accident cover included). That is in line with the Swiss median (CHF 599).

602 CHF/month

in line with SwitzerlandSwiss median: 599 CHF

Median monthly premium 2027, adult (26+), CHF 300 deductible, with accident, standard model: median of the 24 offers in premium region VS-1 (Civiora calculation on FOPH data).

Official FOPH average premiums 2027 (all deductibles and models)

Adult477.30 CHF/monthapprox. 5’730 CHF/year
19–25 years317.40 CHF/monthapprox. 3’810 CHF/year
Child120.30 CHF/monthapprox. 1’440 CHF/year

Federal Office of Public Health (FOPH)Compulsory health insurance premiums 2027 (priminfo)View source

Population and demographics

Official

Sion has 37’844 inhabitants at the end of 2025, 8.2% more than five years ago (Swiss median: +4.4%).

Population change 2010–2025

37’844 inhabitants

Density: 1’086 inhab./km² · 2025

+1.9 % vs previous year (2024–2025)

Age structure (2025)

0–19 years 18.6 %20–64 years 61.0 %65 and over 20.4 %

About 1 resident in 5 is under 20, and 1 in 5 is 65 or over. About 1 resident in 3 (30.9%) holds a foreign nationality.

Federal Statistical Office (FSO)STATPOP: permanent resident population (STAT-TAB), status 31.12.2025View source

Housing

Vacancy rate ranking →Official

On 1 June 2026, 0.93% of homes in Sion were vacant, about 1 in 108 (Swiss median: 0.83%). The higher this rate, the easier it is to find a home.

Vacancy rate 2016–2026

Vacant dwellings19801.06.2026
Housing stock (2024)21’116

Federal Statistical Office (FSO)Vacant dwellings count, 1 June 2026View source

Federal Statistical Office (FSO)Buildings and dwellings statistics (GWS): housing stock 2024View source

Public transport

Derived from official data

Sion has 130 public transport stops. On an ordinary Tuesday, 10’731 departures are scheduled across all stops, 1’024 of them after 8 pm.

Public transport stops130At least one rail stop
Departures on a typical Tuesday10’731of which evening (from 8 pm): 1’024 (10 %)
Departures on a typical Sunday4’06838 % of the typical Tuesday
Public transport stops / 1’0003.44Swiss median: 3.33

Departures counted in the official 2026 timetable (GTFS) on typical days: Tuesday 08.09.2026 and Sunday 13.09.2026. Every call at every stop in the municipality counts as one departure. Civiora calculation.

opentransportdata.swiss (ATLAS, SBB on behalf of the Confederation)Public transport service points, status 04.08.2026View source

opentransportdata.swiss (official GTFS timetable)2026 timetable (GTFS, 01.08.2026 edition): typical daysView source

Territory and local economy

Official

Sion’s territory is 34.4% built-up, 36.1% farmland and 23.2% forest (survey 2004/2009).

Built-up 34.4 %Farmland 36.1 %Forest 23.2 %Other (water, rock…) 6.3 %
Jobs34’703reference year 2018
Establishments3’973reference year 2018
Social assistance rate4.0 %reference year 2019

Federal Statistical Office (FSO)Regional portraits 2021: key figures of communesView source