3141 Postcode — Maassluis, South Holland

English Nederlands

4-digit postcode 3141 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: 6,250
Households: 3,010
Average property value: €300,000
Owner-occupied: 50%
Average household size: 2.1
Urbanity: Strongly urban

Where 3141 is

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

People

Residents	6,250
Men	3,130
Women	3,120
Under 15	1,050
15 to 25	750
25 to 45	1,845
45 to 65	1,510
65 and over	1,095
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	3,010
Average size	2.1
One-person households	42.4%1,275
Couples without children	720
One-parent families	10.6%320
Two-parent families	695

Housing

Homes	3,110
Average property value (WOZ)	€300,000
Owner-occupied	50%
Rented	50%
Housing-association homes	1,375
Flats and shared buildings	56.4%1,755
Built before 1945	4.7%145
Unoccupied	8%250

Area

Addresses per square kilometre	2,070
Urbanity	Strongly urban
Residents on unemployment, disability or income support	8.2%515

Against the national median

The tick is the national median.

Housing

Owner-occupied	50%
Rented	50%
Flats and shared buildings	56.4%
Built before 1945	4.7%
Unoccupied	8%

Households

One-person households	42.4%
One-parent families	10.6%
Residents on unemployment, disability or income support	8.2%

Age bands

Under 15	16.8%
15 to 25	12%
25 to 45	29.52%
45 to 65	24.16%
65 and over	17.52%

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.