3421 Postcode — Oudewater, Utrecht

English Nederlands

4-digit postcode 3421 covers Oudewater, 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: 8,500
Households: 3,795
Average property value: €415,000
Owner-occupied: 70%
Average household size: 2.2
Urbanity: Moderately urban

Where 3421 is

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

People

Residents	8,500
Men	4,175
Women	4,325
Under 15	1,340
15 to 25	915
25 to 45	1,975
45 to 65	2,290
65 and over	1,980
Born abroad, in Europe	0%
Born abroad, outside Europe	0%

Households

Households	3,795
Average size	2.2
One-person households	36.1%1,370
Couples without children	1,135
One-parent families	7.1%270
Two-parent families	1,020

Housing

Homes	3,875
Average property value (WOZ)	€415,000
Owner-occupied	70%
Rented	30%
Housing-association homes	945
Flats and shared buildings	25.7%995
Built before 1945	20.8%805
Unoccupied	4.9%190

Area

Addresses per square kilometre	1,015
Urbanity	Moderately urban
Residents on unemployment, disability or income support	4.6%395

Against the national median

The tick is the national median.

Housing

Owner-occupied	70%
Rented	30%
Flats and shared buildings	25.7%
Built before 1945	20.8%
Unoccupied	4.9%

Households

One-person households	36.1%
One-parent families	7.1%
Residents on unemployment, disability or income support	4.6%

Age bands

Under 15	15.7647%
15 to 25	10.7647%
25 to 45	23.2353%
45 to 65	26.9412%
65 and over	23.2941%

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.