3581 Postcode — Utrecht, Utrecht

English Nederlands

4-digit postcode 3581 covers Utrecht, Utrecht. 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: 9,845
Households: 6,135
Average property value: €644,000
Owner-occupied: 50%
Average household size: 1.6
Urbanity: Very strongly urban

Where 3581 is

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

People

Residents	9,845
Men	4,570
Women	5,275
Under 15	1,020
15 to 25	1,885
25 to 45	3,595
45 to 65	2,040
65 and over	1,305
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	6,135
Average size	1.6
One-person households	64.1%3,930
Couples without children	1,285
One-parent families	3.7%225
Two-parent families	700

Housing

Homes	4,560
Average property value (WOZ)	€644,000
Owner-occupied	50%
Rented	50%
Housing-association homes	715
Flats and shared buildings	49.1%2,240
Built before 1945	81.4%3,710
Unoccupied	7.1%325

Area

Addresses per square kilometre	5,146
Urbanity	Very strongly urban
Residents on unemployment, disability or income support	4.1%405

Against the national median

The tick is the national median.

Housing

Owner-occupied	50%
Rented	50%
Flats and shared buildings	49.1%
Built before 1945	81.4%
Unoccupied	7.1%

Households

One-person households	64.1%
One-parent families	3.7%
Residents on unemployment, disability or income support	4.1%

Age bands

Under 15	10.3606%
15 to 25	19.1468%
25 to 45	36.516%
45 to 65	20.7212%
65 and over	13.2555%

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.