Swiss Postcodes 4xxx
The 4xxx zone covers codes from 4001 to 4955, comprising 261 postal areas across approximately 1,712 km² of Switzerland. This zone serves a population of 867,292 people and contains 228,770 mapped buildings. The largest share falls within Solothurn (113 postcodes, 118% of its postal areas). On average each postcode covers 6.6 km² and serves 3,323 residents.
4xxx postcodes mapped
Click a postcode to see details. The selected postcode is highlighted in the table below.
Distributions
How postcodes in the 4xxx zone are spread across building count and population bands.
| Buildings per postcode | Postcodes | |
|---|---|---|
| 1-49 | 31 | |
| 50-199 | 38 | |
| 200-499 | 72 | |
| 500-999 | 53 | |
| 1000+ | 67 |
| Population per postcode | Postcodes | |
|---|---|---|
| 0 | 1 | |
| 1-499 | 54 | |
| 500-1999 | 102 | |
| 2000-4999 | 57 | |
| 5000-9999 | 24 | |
| 10000+ | 23 |
Cantons & districts
The 4xxx zone spans the following administrative regions. Figures show how many 4xxx postcodes each contains and what share of its total postal areas they represent.
| Canton | Postcodes | Buildings | Population | % of canton |
|---|---|---|---|---|
| Solothurn | 113 | 151,738 | 1,152,389 | 118.1% |
| Basel-Landschaft | 92 | 274,537 | 1,287,205 | 171.1% |
| Bern/Berne | 39 | 77,048 | 223,457 | 16.5% |
| Aargau | 32 | 71,592 | 490,040 | 23.7% |
| Basel-Stadt | 23 | 83,763 | 1,133,742 | 142.9% |
| Luzern | 4 | 716 | 22,974 | 0.6% |
| Ticino | 2 | 2 | 27,740 | 0.0% |
| St. Gallen | 1 | 1 | 16,009 | 0.0% |
| District | Postcodes | Buildings | Population | % of district |
|---|---|---|---|---|
| Verwaltungskreis Oberaargau | 33 | 53,884 | 155,725 | 125.6% |
| Bezirk Sissach | 30 | 32,238 | 117,763 | 110.4% |
| Bezirk Wasseramt | 18 | 7,916 | 201,540 | 32.8% |
| Bezirk Arlesheim | 16 | 94,174 | 559,272 | 139.9% |
| Bezirk Waldenburg | 16 | 16,560 | 75,850 | 126.8% |
| Bezirk Liestal | 15 | 41,108 | 256,462 | 120.7% |
| Bezirk Rheinfelden | 15 | 23,510 | 127,020 | 114.2% |
| Bezirk Laufen | 14 | 18,928 | 62,604 | 112.1% |
| Bezirk Olten | 13 | 24,062 | 167,506 | 112.7% |
| Bezirk Thierstein | 13 | 6,974 | 50,108 | 81.2% |
| Bezirk Lebern | 13 | 8,726 | 81,997 | 41.5% |
| Bezirk Dorneck | 12 | 12,976 | 89,340 | 115.2% |
| Bezirk Zofingen | 11 | 31,344 | 246,086 | 99.9% |
| Bezirk Gösgen | 10 | 12,430 | 90,686 | 112.4% |
| Bezirk Gäu | 9 | 2,058 | 51,808 | 23.3% |
All 4xxx postcodes (261)
Every postal code in the 4xxx zone with population, building count, area, and administrative region.