3143 Postcode — Maassluis, South Holland

English Nederlands

4-digit postcode 3143 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: 3,215
Households: 1,485
Average property value: €367,000
Owner-occupied: 70%
Average household size: 2.2
Urbanity: Strongly urban

Where 3143 is

Maassluis, South Holland — the point recorded for this postal code. It marks the centre of the code, not its boundary.

People

Residents	3,215
Men	1,590
Women	1,620
Under 15	485
15 to 25	365
25 to 45	950
45 to 65	860
65 and over	560
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	1,485
Average size	2.2
One-person households	33.7%500
Couples without children	485
One-parent families	9.4%140
Two-parent families	355

Housing

Homes	1,515
Average property value (WOZ)	€367,000
Owner-occupied	70%
Rented	30%
Housing-association homes	355
Flats and shared buildings	43.9%665
Built before 1945	34.7%525
Unoccupied	7.9%120

Area

Addresses per square kilometre	2,192
Urbanity	Strongly urban
Residents on unemployment, disability or income support	7.2%230

Against the national median

The tick is the national median.

Housing

Owner-occupied	70%
Rented	30%
Flats and shared buildings	43.9%
Built before 1945	34.7%
Unoccupied	7.9%

Households

One-person households	33.7%
One-parent families	9.4%
Residents on unemployment, disability or income support	7.2%

Age bands

Under 15	15.0621%
15 to 25	11.3354%
25 to 45	29.5031%
45 to 65	26.7081%
65 and over	17.3913%

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.