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Municipal profile

Coat of arms of Gossau (SG)

Gossau (SG)

Canton: St. Gallen (SG)

Civiora Index

Derived from official data

61/100

Above the median

National rank: 711 / 2’110 · Top 34% nationally

Taxes63/100
Premiums60/100
Electricity48/100
Housing45/100
PT service81/100

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

Median altitude646 m
Area27.5 km²
Postcode9015
FSO no.3443
DistrictWahlkreis St. Gallen
Tax burden11.9 %Single, CHF 80’000 · 2026 less than SwitzerlandSwiss median: 13.1 %
Electricity price27.6 ct./kWhH4 · 2027 more than SwitzerlandSwiss median: 26.9 ct./kWh
Health insurance premiums599 CHF/monthAdult · 2027 in line with SwitzerlandSwiss median: 599 CHF
Population18’943+5.3 % over 5 years (2020–2025) more than SwitzerlandSwiss median: +4.4 %
Vacancy rate0.70 %01.06.2026 less than SwitzerlandSwiss median: 0.83 %
Public transport stops44At 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 Gossau (SG) pays 11.9% of their gross income in tax, or about CHF 9’500 a year. That is CHF 980 less than in the median Swiss municipality.

Gossau (SG)Swiss median
Single, CHF 80’000 approx. 9’500 CHF/year980 CHF/year less
11.9 %
13.1 %
Single, CHF 120’000 approx. 18’740 CHF/year1’960 CHF/year less
15.6 %
17.2 %
Married couple, CHF 120’000 approx. 12’670 CHF/year790 CHF/year less
10.6 %
11.2 %
Family, 2 children, CHF 150’000 approx. 13’820 CHF/year1’090 CHF/year less
9.2 %
9.9 %
Retiree, CHF 80’000 approx. 11’870 CHF/year1’110 CHF/year less
14.8 %
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 →Derived from official data

A typical household (profile H4, 4’500 kWh a year) in Gossau (SG) pays 27.55 ct. per kWh, or about CHF 1’240 a year. That is CHF 29 a year more than in the median Swiss municipality.

27.55 ct./kWh

more than SwitzerlandSwiss median: 26.91 ct./kWh

Tariff breakdown

Energy (the electricity itself) 10.91Grid (delivery to the meter) 12.21Levies and surcharge (public charges and levies) 4.43ct./kWh

Municipality served by 2 grid operators: value = median of tariffs (Civiora calculation on official ElCom data).

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 Gossau (SG) pays a median CHF 599 a month for basic health insurance, or about CHF 7’190 a year (CHF 300 deductible, accident cover included). That is in line with the Swiss median (CHF 599).

599 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 25 offers in premium region SG-1 (Civiora calculation on FOPH data).

Official FOPH average premiums 2027 (all deductibles and models)

Adult456.90 CHF/monthapprox. 5’480 CHF/year
19–25 years314.60 CHF/monthapprox. 3’780 CHF/year
Child122.70 CHF/monthapprox. 1’470 CHF/year

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

Population and demographics

Official

Gossau (SG) has 18’943 inhabitants at the end of 2025, 5.3% more than five years ago (Swiss median: +4.4%).

Population change 2010–2025

18’943 inhabitants

Density: 689 inhab./km² · 2025

+1.7 % vs previous year (2024–2025)

Age structure (2025)

0–19 years 19.7 %20–64 years 58.7 %65 and over 21.6 %

About 1 resident in 5 is under 20, and 1 in 5 is 65 or over. About 1 resident in 4 (23.8%) 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, 0.70% of homes in Gossau (SG) were vacant, about 1 in 143 (Swiss median: 0.83%). The higher this rate, the easier it is to find a home.

Vacancy rate 2016–2026

Vacant dwellings6401.06.2026
Housing stock (2024)9’019

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

Gossau (SG) has 44 public transport stops. On an ordinary Tuesday, 5’464 departures are scheduled across all stops, 601 of them after 8 pm.

Public transport stops44At least one rail stop
Departures on a typical Tuesday5’464of which evening (from 8 pm): 601 (11 %)
Departures on a typical Sunday2’15339 % of the typical Tuesday
Public transport stops / 1’0002.32Swiss 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

Gossau (SG)’s territory is 21.9% built-up, 60.6% farmland and 16.2% forest (survey 2004/2009).

Built-up 21.9 %Farmland 60.6 %Forest 16.2 %Other (water, rock…) 1.3 %
Jobs13’292reference year 2018
Establishments1’243reference year 2018
Social assistance rate1.3 %reference year 2019

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