Postcode area · Spiez · Bern

3700 Spiez (Spiez): key figures

3700 Spiez (postcode area in Spiez) has 9,320 residents in 2025 across 10.3 km², or 906 people per km². By population, 3700 Spiez ranks No. 1 of 4 postcode areas in Spiez. Population: +5.0% between 2015 and 2025.

  • 9,320 residents
  • 10.3 km²
  • 906 people/km²

3700 Spiez in numbers

Population
9,320
ranked 232 of 2,275
+5.0%between 2015 and 2025
2015–2025
Population density
906people/km²
ranked 407 of 2,275
Area
10.3km²
ranked 1,113 of 3,168
Share of foreign nationals
16.6%
ranked 1,370 of 2,040
Dwellings
5,233
ranked 211 of 3,164
Residential buildings
2,052
ranked 89 of 3,160
Dwellings in buildings built before 1946
20.1%
ranked 2,131 of 3,164

Key points

By population, 3700 Spiez ranks No. 1 of 4 postcode areas in Spiez.

Nationally, 3700 Spiez ranks No. 232 of 2,275 postcode areas.

Population of 3700 Spiez over time

8,8009,0009,2009,4002015202020232025
Population, 2015–2025

3700 Spiez had 8,880 residents in 2015 and 9,320 in 2025.

YearPopulation
20158,880
20209,077
20239,198
20259,320

All indicators for 3700 Spiez

Next to the value for 3700 Spiez: all postcode areas of Spiez, then of the whole country (totals for counts, weighted averages for rates).

3700 SpiezNational medianHover over or tap a bar to see what it shows.

Housing

Indicator3700 SpiezSpiezSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)5,233––ranked 1 of 4ranked 211 of 3,164
Residential buildings (2026)2,052––ranked 1 of 4ranked 89 of 3,160
Dwellings in buildings built before 1946 (2026)20.1%19.9%23.2%ranked 2 of 4ranked 2,131 of 3,164
Dwellings in buildings built since 2001 (2026)15.5%15.9%23.6%ranked 3 of 4ranked 2,143 of 3,164
Share of detached houses among residential buildings (2026)55.0%55.0%63.5%ranked 2 of 4ranked 2,634 of 3,160

Energy

Indicator3700 SpiezSpiezSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)59.8%57.5%56.2%ranked 1 of 4ranked 1,004 of 3,160
Heat pumps as main heating (2026)14.7%15.8%16.2%ranked 4 of 4ranked 1,345 of 3,160
Wood heating systems (2026)14.3%15.0%13.5%ranked 3 of 4ranked 1,708 of 3,160
District heating (2026)3.8%2.9%5.6%ranked 1 of 4ranked 812 of 3,160

Society

Indicator3700 SpiezSpiezSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)16.6%16.3%29.8%ranked 1 of 4ranked 1,370 of 2,040

Where is 3700 Spiez?

Frequently asked questions

What is the population of 3700 Spiez (Spiez)?

3700 Spiez has 9,320 residents in 2025. It covers 10.3 km², or 906 people per km².

Where is 3700 Spiez?

3700 Spiez (postcode area) is part of Spiez, in Bern.

What is the value of “Share of foreign nationals” in 3700 Spiez?

Share of foreign nationals: 16.6% (2025), ranked 1,370 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 3700 Spiez?

Dwellings: 5,233 (2026), ranked 211 of 3,164 postcode areas in the country.