3145 Postcode
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English Nederlands
4-digit postcode 3145 covers Maassluis, South Holland. Dutch postcodes are four digits and two letters. The four digits identify a delivery area, and it is the level Statistics Netherlands publishes against, so the figures below describe this postcode itself rather than the town around it.
- Residents
- 6,720
- Households
- 2,980
- Average property value
- €350,000
- Owner-occupied
- 60%
- Average household size
- 2.2
- Urbanity
- Strongly urban
Where 3145 is
Maassluis, South Holland — the point recorded for this postal code. It marks the centre of the code, not its boundary.
People
| Residents | 6,720 |
|---|---|
| Men | 3,275 |
| Women | 3,445 |
| Under 15 | 1,080 |
| 15 to 25 | 720 |
| 25 to 45 | 1,655 |
| 45 to 65 | 1,575 |
| 65 and over | 1,685 |
| Born abroad, in Europe | 0% |
| Born abroad, outside Europe | 10% |
Households
| Households | 2,980 |
|---|---|
| Average size | 2.2 |
| One-person households | 33.2%990 |
| Couples without children | 975 |
| One-parent families | 6.7%200 |
| Two-parent families | 820 |
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Housing
| Homes | 3,070 |
|---|---|
| Average property value (WOZ) | €350,000 |
| Owner-occupied | 60% |
| Rented | 40% |
| Housing-association homes | 870 |
| Flats and shared buildings | 54.4%1,670 |
| Unoccupied | 5%155 |
Area
| Addresses per square kilometre | 2,000 |
|---|---|
| Urbanity | Strongly urban |
| Residents on unemployment, disability or income support | 6%400 |
The tick is the national median.
| Owner-occupied | |
|---|---|
| Rented | |
| Flats and shared buildings | |
| Unoccupied |
| One-person households | |
|---|---|
| One-parent families | |
| Residents on unemployment, disability or income support |
| Under 15 | |
|---|---|
| 15 to 25 | |
| 25 to 45 | |
| 45 to 65 | |
| 65 and over |
Figures from Statistics Netherlands (CBS), key figures per postcode, 1 January 2025. CBS withholds figures for areas with too few residents to publish safely, so a missing value here means withheld, not zero.
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