3605 Postcode — Maarssen, Utrecht

English Nederlands

4-digit postcode 3605 covers Maarssen, 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: 5,790
Households: 2,875
Average property value: €353,000
Owner-occupied: 40%
Average household size: 2
Urbanity: Strongly urban

Where 3605 is

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

People

Residents	5,790
Men	2,825
Women	2,965
Under 15	890
15 to 25	500
25 to 45	1,765
45 to 65	1,435
65 and over	1,200
Born abroad, in Europe	10%
Born abroad, outside Europe	20%

Households

Households	2,875
Average size	2
One-person households	44.3%1,275
Couples without children	710
One-parent families	7.8%225
Two-parent families	665

Housing

Homes	2,820
Average property value (WOZ)	€353,000
Owner-occupied	40%
Rented	60%
Housing-association homes	1,155
Flats and shared buildings	56.4%1,590
Unoccupied	2%55

Area

Addresses per square kilometre	2,195
Urbanity	Strongly urban
Residents on unemployment, disability or income support	9.7%560

Against the national median

The tick is the national median.

Housing

Owner-occupied	40%
Rented	60%
Flats and shared buildings	56.4%
Unoccupied	2%

Households

One-person households	44.3%
One-parent families	7.8%
Residents on unemployment, disability or income support	9.7%

Age bands

Under 15	15.3713%
15 to 25	8.63558%
25 to 45	30.4836%
45 to 65	24.7841%
65 and over	20.7254%

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.