3811 Postcode — Amersfoort, Utrecht

English Nederlands

4-digit postcode 3811 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: 7,365
Households: 4,765
Average property value: €378,000
Owner-occupied: 30%
Average household size: 1.5
Urbanity: Very strongly urban

Where 3811 is

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

People

Residents	7,365
Men	3,660
Women	3,705
Under 15	450
15 to 25	995
25 to 45	2,875
45 to 65	1,690
65 and over	1,360
Born abroad, in Europe	10%
Born abroad, outside Europe	10%

Households

Households	4,765
Average size	1.5
One-person households	64.8%3,090
Couples without children	1,140
One-parent families	4%190
Two-parent families	340

Housing

Homes	4,450
Average property value (WOZ)	€378,000
Owner-occupied	30%
Rented	70%
Housing-association homes	940
Flats and shared buildings	77.5%3,450
Built before 1945	37.1%1,650
Unoccupied	6.6%295

Area

Addresses per square kilometre	4,269
Urbanity	Very strongly urban
Residents on unemployment, disability or income support	8.2%605

Against the national median

The tick is the national median.

Housing

Owner-occupied	30%
Rented	70%
Flats and shared buildings	77.5%
Built before 1945	37.1%
Unoccupied	6.6%

Households

One-person households	64.8%
One-parent families	4%
Residents on unemployment, disability or income support	8.2%

Age bands

Under 15	6.10583%
15 to 25	13.5007%
25 to 45	39.0095%
45 to 65	22.9308%
65 and over	18.4532%

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.