3817 Postcode — Amersfoort, Utrecht

English Nederlands

4-digit postcode 3817 covers Amersfoort, 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: 12,155
Households: 5,855
Average property value: €496,000
Owner-occupied: 60%
Average household size: 2.1
Urbanity: Very strongly urban

Where 3817 is

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

People

Residents	12,155
Men	5,950
Women	6,205
Under 15	2,045
15 to 25	1,370
25 to 45	3,180
45 to 65	3,320
65 and over	2,245
Born abroad, in Europe	0%
Born abroad, outside Europe	10%

Households

Households	5,855
Average size	2.1
One-person households	42.6%2,495
Couples without children	1,555
One-parent families	6.4%375
Two-parent families	1,425

Housing

Homes	5,725
Average property value (WOZ)	€496,000
Owner-occupied	60%
Rented	40%
Housing-association homes	1,445
Flats and shared buildings	38.3%2,195
Built before 1945	51.3%2,935
Unoccupied	2.9%165

Area

Addresses per square kilometre	2,677
Urbanity	Very strongly urban
Residents on unemployment, disability or income support	6.8%825

Against the national median

The tick is the national median.

Housing

Owner-occupied	60%
Rented	40%
Flats and shared buildings	38.3%
Built before 1945	51.3%
Unoccupied	2.9%

Households

One-person households	42.6%
One-parent families	6.4%
Residents on unemployment, disability or income support	6.8%

Age bands

Under 15	16.8174%
15 to 25	11.2664%
25 to 45	26.1513%
45 to 65	27.3026%
65 and over	18.4622%

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.