3144 Postcode — Maassluis, South Holland

English Nederlands

4-digit postcode 3144 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: 7,650
Households: 3,520
Average property value: €338,000
Owner-occupied: 50%
Average household size: 2.1
Urbanity: Strongly urban

Where 3144 is

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

People

Residents	7,650
Men	3,700
Women	3,950
Under 15	1,150
15 to 25	725
25 to 45	1,700
45 to 65	1,870
65 and over	2,205
Born abroad, in Europe	0%
Born abroad, outside Europe	10%

Households

Households	3,520
Average size	2.1
One-person households	37.1%1,305
Couples without children	1,105
One-parent families	8.2%290
Two-parent families	815

Housing

Homes	3,615
Average property value (WOZ)	€338,000
Owner-occupied	50%
Rented	50%
Housing-association homes	1,775
Flats and shared buildings	59.2%2,140
Built before 1945	8.7%315
Unoccupied	2.5%90

Area

Addresses per square kilometre	2,354
Urbanity	Strongly urban
Residents on unemployment, disability or income support	8.3%635

Against the national median

The tick is the national median.

Housing

Owner-occupied	50%
Rented	50%
Flats and shared buildings	59.2%
Built before 1945	8.7%
Unoccupied	2.5%

Households

One-person households	37.1%
One-parent families	8.2%
Residents on unemployment, disability or income support	8.3%

Age bands

Under 15	15.0327%
15 to 25	9.47712%
25 to 45	22.2222%
45 to 65	24.4444%
65 and over	28.8235%

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.