3131 Postcode — Vlaardingen, South Holland

English Nederlands

4-digit postcode 3131 covers Vlaardingen, 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: 15,725
Households: 8,005
Average property value: €267,000
Owner-occupied: 50%
Average household size: 1.9
Urbanity: Very strongly urban

Where 3131 is

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

People

Residents	15,725
Men	7,805
Women	7,920
Under 15	2,260
15 to 25	1,760
25 to 45	4,990
45 to 65	4,170
65 and over	2,545
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	8,005
Average size	1.9
One-person households	45.9%3,675
Couples without children	1,950
One-parent families	11%880
Two-parent families	1,505

Housing

Homes	8,030
Average property value (WOZ)	€267,000
Owner-occupied	50%
Rented	50%
Housing-association homes	2,890
Flats and shared buildings	68.2%5,480
Built before 1945	38.1%3,060
Unoccupied	6%485

Area

Addresses per square kilometre	3,657
Urbanity	Very strongly urban
Residents on unemployment, disability or income support	8.5%1,335

Against the national median

The tick is the national median.

Housing

Owner-occupied	50%
Rented	50%
Flats and shared buildings	68.2%
Built before 1945	38.1%
Unoccupied	6%

Households

One-person households	45.9%
One-parent families	11%
Residents on unemployment, disability or income support	8.5%

Age bands

Under 15	14.372%
15 to 25	11.1924%
25 to 45	31.7329%
45 to 65	26.5183%
65 and over	16.1844%

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.