3611 Postcode — Oud Zuilen, Utrecht

English Nederlands

4-digit postcode 3611 covers Oud Zuilen, 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: 600
Households: 250
Average property value: €820,000
Owner-occupied: 90%
Average household size: 2.4
Urbanity: Little urban

Where 3611 is

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

People

Residents	600
Men	310
Women	290
Under 15	95
15 to 25	70
25 to 45	90
45 to 65	220
65 and over	125
Born abroad, in Europe	0%
Born abroad, outside Europe	0%

Households

Households	250
Average size	2.4
One-person households	22%55
Couples without children	100
One-parent families	4%10
Two-parent families	85

Housing

Homes	240
Average property value (WOZ)	€820,000
Owner-occupied	90%
Rented	10%
Housing-association homes	15
Flats and shared buildings	2.1%5
Built before 1945	22.9%55
Unoccupied	4.2%10

Area

Addresses per square kilometre	538
Urbanity	Little urban
Residents on unemployment, disability or income support	4.2%25

Against the national median

The tick is the national median.

Housing

Owner-occupied	90%
Rented	10%
Flats and shared buildings	2.1%
Built before 1945	22.9%
Unoccupied	4.2%

Households

One-person households	22%
One-parent families	4%
Residents on unemployment, disability or income support	4.2%

Age bands

Under 15	15.8333%
15 to 25	11.6667%
25 to 45	15%
45 to 65	36.6667%
65 and over	20.8333%

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.