1811 Postcode — Alkmaar, North Holland

English Nederlands

4-digit postcode 1811 covers Alkmaar, 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: 5,425
Households: 3,525
Average property value: €355,000
Owner-occupied: 40%
Average household size: 1.5
Urbanity: Very strongly urban

Where 1811 is

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

People

Residents	5,425
Men	2,760
Women	2,665
Under 15	320
15 to 25	725
25 to 45	2,165
45 to 65	1,425
65 and over	790
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	3,525
Average size	1.5
One-person households	61.6%2,170
Couples without children	905
One-parent families	4.5%160
Two-parent families	295

Housing

Homes	3,690
Average property value (WOZ)	€355,000
Owner-occupied	40%
Rented	60%
Housing-association homes	475
Flats and shared buildings	76.8%2,835
Built before 1945	56.8%2,095
Unoccupied	11.4%420

Area

Addresses per square kilometre	4,343
Urbanity	Very strongly urban
Residents on unemployment, disability or income support	7.1%385

Against the national median

The tick is the national median.

Housing

Owner-occupied	40%
Rented	60%
Flats and shared buildings	76.8%
Built before 1945	56.8%
Unoccupied	11.4%

Households

One-person households	61.6%
One-parent families	4.5%
Residents on unemployment, disability or income support	7.1%

Age bands

Under 15	5.89862%
15 to 25	13.3641%
25 to 45	39.9078%
45 to 65	26.2673%
65 and over	14.5622%

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.