Postcode area · Birsfelden · Basel-Landschaft

4127 Birsfelden (Birsfelden): key figures

4127 Birsfelden (postcode area in Birsfelden) has 10,490 residents in 2025 across 3.4 km², or 3,076 people per km². Population: +0.3% between 2015 and 2025.

  • 10,490 residents
  • 3.4 km²
  • 3,076 people/km²

4127 Birsfelden in numbers

Population
10,490
ranked 200 of 2,275
+0.3%between 2015 and 2025
2015–2025
Population density
3,076people/km²
ranked 87 of 2,275
Area
3.4km²
ranked 2,630 of 3,168
Share of foreign nationals
33.7%
ranked 293 of 2,040
Dwellings
6,052
ranked 171 of 3,164
Residential buildings
1,143
ranked 346 of 3,160
Dwellings in buildings built before 1946
18.3%
ranked 2,276 of 3,164

Key points

Nationally, 4127 Birsfelden ranks No. 200 of 2,275 postcode areas.

Population of 4127 Birsfelden over time

10,35010,40010,45010,5002015202020232025
Population, 2015–2025

4127 Birsfelden had 10,463 residents in 2015 and 10,490 in 2025.

YearPopulation
201510,463
202010,461
202310,377
202510,490

All indicators for 4127 Birsfelden

Next to the value for 4127 Birsfelden: all postcode areas of Birsfelden, then of the whole country (totals for counts, weighted averages for rates).

4127 BirsfeldenNational medianHover over or tap a bar to see what it shows.

Housing

Indicator4127 BirsfeldenBirsfeldenSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)6,052––ranked 171 of 3,164
Residential buildings (2026)1,143––ranked 346 of 3,160
Dwellings in buildings built before 1946 (2026)18.3%18.3%23.2%ranked 2,276 of 3,164
Dwellings in buildings built since 2001 (2026)9.0%9.0%23.6%ranked 2,639 of 3,164
Share of detached houses among residential buildings (2026)37.1%37.1%63.5%ranked 3,031 of 3,160

Energy

Indicator4127 BirsfeldenBirsfeldenSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)80.4%80.4%56.2%ranked 156 of 3,160
Heat pumps as main heating (2026)6.1%6.1%16.2%ranked 2,542 of 3,160
Wood heating systems (2026)0.7%0.7%13.5%ranked 3,103 of 3,160
District heating (2026)11.5%11.5%5.6%ranked 319 of 3,160

Society

Indicator4127 BirsfeldenBirsfeldenSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)33.7%33.7%29.8%ranked 293 of 2,040

Where is 4127 Birsfelden?

Frequently asked questions

What is the population of 4127 Birsfelden (Birsfelden)?

4127 Birsfelden has 10,490 residents in 2025. It covers 3.4 km², or 3,076 people per km².

Where is 4127 Birsfelden?

4127 Birsfelden (postcode area) is part of Birsfelden, in Basel-Landschaft.

What is the value of “Share of foreign nationals” in 4127 Birsfelden?

Share of foreign nationals: 33.7% (2025), ranked 293 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 4127 Birsfelden?

Dwellings: 6,052 (2026), ranked 171 of 3,164 postcode areas in the country.