Postcode area · Basel · Basel-Stadt

4056 Basel (Basel): key figures

4056 Basel (postcode area in Basel) has 21,329 residents in 2025 across 2.5 km², or 8,706 people per km². By population, 4056 Basel ranks No. 6 of 11 postcode areas in Basel. Population: +3.5% between 2015 and 2025.

  • 21,329 residents
  • 2.5 km²
  • 8,706 people/km²

4056 Basel in numbers

Population
21,329
ranked 56 of 2,275
+3.5%between 2015 and 2025
2015–2025
Population density
8,706people/km²
ranked 18 of 2,275
Area
2.5km²
ranked 2,851 of 3,168
Share of foreign nationals
43.7%
ranked 76 of 2,040
Dwellings
12,760
ranked 36 of 3,164
Residential buildings
1,846
ranked 126 of 3,160
Dwellings in buildings built before 1946
42.0%
ranked 807 of 3,164

Key points

By population, 4056 Basel ranks No. 6 of 11 postcode areas in Basel.

Nationally, 4056 Basel ranks No. 56 of 2,275 postcode areas.

Population of 4056 Basel over time

20,60020,80021,00021,20021,4002015202020232025
Population, 2015–2025

4056 Basel had 20,603 residents in 2015 and 21,329 in 2025.

YearPopulation
201520,603
202020,711
202320,890
202521,329

All indicators for 4056 Basel

Next to the value for 4056 Basel: all postcode areas of Basel, then of the whole country (totals for counts, weighted averages for rates).

4056 BaselNational medianHover over or tap a bar to see what it shows.

Housing

Indicator4056 BaselBaselSwitzerlandPosition?Rank in the areaRank in the country
Dwellings (2026)12,760––ranked 6 of 10ranked 36 of 3,164
Residential buildings (2026)1,846––ranked 6 of 10ranked 126 of 3,160
Dwellings in buildings built before 1946 (2026)42.0%37.1%23.2%ranked 4 of 10ranked 807 of 3,164
Dwellings in buildings built since 2001 (2026)7.3%8.8%23.6%ranked 4 of 10ranked 2,764 of 3,164
Share of detached houses among residential buildings (2026)24.9%36.5%63.5%ranked 6 of 10ranked 3,105 of 3,160

Energy

Indicator4056 BaselBaselSwitzerlandPosition?Rank in the areaRank in the country
Oil or gas heating systems (2026)13.8%43.6%56.2%ranked 10 of 10ranked 3,013 of 3,160
Heat pumps as main heating (2026)1.6%8.6%16.2%ranked 9 of 10ranked 3,045 of 3,160
Wood heating systems (2026)0.4%1.2%13.5%ranked 9 of 10ranked 3,138 of 3,160
District heating (2026)84.1%45.9%5.6%ranked 1 of 10ranked 2 of 3,160

Society

Indicator4056 BaselBaselSwitzerlandPosition?Rank in the areaRank in the country
Share of foreign nationals (2025)43.7%40.5%29.8%ranked 3 of 11ranked 76 of 2,040

Where is 4056 Basel?

Frequently asked questions

What is the population of 4056 Basel (Basel)?

4056 Basel has 21,329 residents in 2025. It covers 2.5 km², or 8,706 people per km².

Where is 4056 Basel?

4056 Basel (postcode area) is part of Basel, in Basel-Stadt.

What is the value of “Share of foreign nationals” in 4056 Basel?

Share of foreign nationals: 43.7% (2025), ranked 76 of 2,040 postcode areas in the country.

What is the value of “Dwellings” in 4056 Basel?

Dwellings: 12,760 (2026), ranked 36 of 3,164 postcode areas in the country.