1901 Postcode — Castricum, North Holland

English Nederlands

4-digit postcode 1901 covers Castricum, North 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: 14,945
Households: 6,820
Average property value: €509,000
Owner-occupied: 70%
Average household size: 2.1
Urbanity: Strongly urban

Where 1901 is

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

People

Residents	14,945
Men	7,275
Women	7,670
Under 15	2,240
15 to 25	1,545
25 to 45	3,105
45 to 65	4,035
65 and over	4,025
Born abroad, in Europe	0%
Born abroad, outside Europe	0%

Households

Households	6,820
Average size	2.1
One-person households	37.9%2,585
Couples without children	2,025
One-parent families	6.4%435
Two-parent families	1,775

Housing

Homes	7,015
Average property value (WOZ)	€509,000
Owner-occupied	70%
Rented	30%
Housing-association homes	1,170
Flats and shared buildings	29.2%2,045
Built before 1945	19%1,330
Unoccupied	4.6%320

Area

Addresses per square kilometre	1,657
Urbanity	Strongly urban
Residents on unemployment, disability or income support	5.8%865

Against the national median

The tick is the national median.

Housing

Owner-occupied	70%
Rented	30%
Flats and shared buildings	29.2%
Built before 1945	19%
Unoccupied	4.6%

Households

One-person households	37.9%
One-parent families	6.4%
Residents on unemployment, disability or income support	5.8%

Age bands

Under 15	14.9833%
15 to 25	10.3344%
25 to 45	20.7692%
45 to 65	26.99%
65 and over	26.9231%

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.