Postcode · Bosch en Duin, Utrecht

Postcode 3735: Neighbourhood Den Dolder

On 1 January 2026, postcode 3735 in Bosch en Duin (Den Dolder) had 1,715 residents. 20.1% of them (345 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than the municipality of Zeist (27.4%) and lower than the national average (29.1%). The largest origin groups are Indonesia (4.4%), other Europe (3.8%) and Germany (2.6%). 47.8% of residents with a migration background were born abroad themselves. Since 2022 the share has hardly changed.

Residents: 1,715 on 1 January 2026
Migration background: 20.1% 345 people
Born abroad: 47.8% of those with a migration background
Change since 2022: +0.2 pp in share with a migration background

Migration background, share of residents

Share of residents with a migration background in this postcode and its neighbours.

Where residents come from

Origin of residents on 1 January 2026, as a share of all residents.

Dutch origin and migration background

80% 20%

Dutch origin 79.9% 1,370
Migration background 20.1% 345

Largest origin groups

Bars show each group’s share of all residents of 3735. For comparison, the line marks Municipality of Zeist and the circle the Netherlands.

Indonesia

4.4% 75 people

Municipality of Zeist 2.8% Netherlands 1.9%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

3.8% 65 people

Municipality of Zeist 4.1% Netherlands 5.6%
Germany

2.6% 45 people

Municipality of Zeist 1.7% Netherlands 1.9%
Other Asia Asia excluding Indonesia and Turkey

2.3% 40 people

Municipality of Zeist 4.7% Netherlands 5.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

2.0% 35 people

Municipality of Zeist 1.6% Netherlands 1.7%
Belgium

1.5% 25 people

Municipality of Zeist 0.59% Netherlands 0.76%
Other Africa Africa excluding Morocco

1.2% 20 people

Municipality of Zeist 2.1% Netherlands 2.3%
Suriname

0.87% 15 people

Municipality of Zeist 1.5% Netherlands 2.0%
Turkey

0.29% 5 people

Municipality of Zeist 1.1% Netherlands 2.6%
Morocco

0.29% 5 people

Municipality of Zeist 5.7% Netherlands 2.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.29% 5 people

Municipality of Zeist 0.77% Netherlands 1.1%
Poland

0.29% 5 people

Municipality of Zeist 0.63% Netherlands 1.4%

First and second generation

Residents with a migration background, by whether they were born abroad themselves.

48% 52%

Born abroad (first generation) 47.8% 165
Born in the Netherlands (second generation) 52.2% 180

Men and women

Men: 850
Women: 865

Compared with all postcodes

Netherlands 29.1% 3735 20.1%

Higher than 56% of all postcodes in the Netherlands

Trend since 1998

Share of residents with a migration background, compared with larger areas.

Show

Measure % Residents

New CBS classification

20.1%

3735
Municipality of Zeist
Netherlands

Show as table

Year	3735	Municipality of Zeist	Netherlands
1998	16.0%	18.4%	16.7%
1999	15.7%	18.9%	17.1%
2000	15.5%	19.4%	17.5%
2001	15.5%	19.7%	18.0%
2002	16.0%	19.9%	18.4%
2003	15.4%	20.0%	18.8%
2004	15.7%	20.2%	19.0%
2005	15.6%	20.6%	19.2%
2006	15.9%	20.8%	19.3%
2007	15.6%	20.9%	19.4%
2008	16.6%	21.2%	19.6%
2009	16.8%	21.4%	19.9%
2010	16.8%	21.7%	20.3%
2011	16.7%	21.9%	20.6%
2012	17.4%	22.3%	20.9%
2013	17.6%	22.5%	21.1%
2014	16.9%	22.7%	21.4%
2015	17.0%	23.0%	21.7%
2016	17.6%	23.1%	22.1%
2017	17.7%	23.4%	22.6%
2018	17.9%	23.6%	23.1%
2019	17.5%	23.4%	23.6%
2020	17.5%	23.6%	24.2%
2021	17.7%	23.7%	24.6%
2022	19.9%	25.6%	26.0%
2023	20.2%	26.5%	27.1%
2024	20.3%	26.8%	27.9%
2025	20.8%	27.1%	28.5%
2026	20.1%	27.4%	29.1%

In 2022 CBS switched to a new origin classification. Up to 2021 the line shows the old “migration background” figures; the overlap years show a small break (about +0.8 points nationally).

Nearby postcodes

				Largest group
3705 Noord	27.9%	10,190	+2.4 pp	Other Europe
3706 Noord	46.4%	5,150	+1.1 pp	Morocco
3732 Oost	22.4%	4,675	+1.0 pp	Other Europe
3722 Zuid Oost	24.2%	4,540	+2.9 pp	Morocco
3734 Noord, Zuid	19.6%	4,380	+1.7 pp	Indonesia
3712 Den Dolder	19.4%	3,190	−4.9 pp	Other Europe

All figures

Number of residents per origin group on 1 January. Figures up to 2021 use the old CBS classification.

Year	Total residents	Dutch origin	Migration background	Europe	Outside Europe	Turkey	Morocco	Suriname	Indonesia	Dutch Caribbean	Germany	Poland	Belgium	Other Europe	Other Africa	Other Asia	Other Americas & Oceania	Western migration background	Non-Western migration background
1998	1,905	1,600	305	155	150	5	0	5	90	5	65	5	15	70	10	20	15	260	45
1999	1,880	1,585	295	150	145	5	0	5	90	5	60	5	15	70	10	15	15	245	50
2000	1,840	1,555	285	155	135	0	0	5	85	5	60	5	15	75	5	15	20	245	40
2001	1,865	1,570	290	140	150	5	0	5	90	5	55	5	10	70	10	15	20	235	50
2002	1,785	1,505	285	135	150	5	0	5	85	5	55	5	10	65	10	20	20	230	50
2003	1,780	1,505	275	145	130	0	0	5	85	5	55	10	15	65	10	15	10	230	45
2004	1,755	1,480	275	140	140	5	5	10	85	0	60	10	15	55	10	10	15	230	45
2005	1,735	1,465	270	130	140	5	5	10	80	0	55	5	20	50	10	15	15	220	50
2006	1,725	1,450	275	140	135	0	0	10	80	5	60	5	15	60	15	15	10	225	50
2007	1,735	1,460	270	135	135	5	5	10	80	0	60	5	20	50	5	15	15	220	55
2008	1,720	1,435	285	135	150	5	0	15	75	0	60	5	20	50	15	20	20	220	65
2009	1,700	1,415	285	140	145	5	5	15	75	5	60	5	20	55	5	20	15	230	60
2010	1,730	1,435	290	145	145	0	0	20	80	5	55	0	20	70	10	15	15	230	60
2011	1,770	1,470	295	140	155	5	0	15	80	5	50	5	20	65	10	20	20	235	65
2012	1,755	1,450	305	155	150	0	0	20	75	5	50	5	20	80	15	25	10	240	65
2013	1,765	1,455	310	145	160	5	0	15	80	5	50	5	25	65	15	20	20	245	65
2014	1,690	1,405	285	135	150	5	5	15	80	5	45	5	20	65	10	10	20	225	60
2015	1,705	1,415	290	145	140	0	0	20	80	5	50	5	20	70	10	15	10	235	55
2016	1,680	1,385	295	155	140	0	5	20	75	5	50	5	25	75	5	15	15	235	60
2017	1,640	1,350	290	145	140	5	0	15	75	5	55	5	20	65	5	15	20	235	55
2018	1,680	1,380	300	145	155	5	0	15	70	5	50	10	20	65	10	20	30	235	65
2019	1,685	1,390	295	150	145	5	5	15	75	0	45	10	20	75	5	15	25	235	60
2020	1,740	1,435	305	150	160	5	0	20	80	5	50	10	20	70	15	15	20	240	65
2021	1,720	1,415	305	140	165	5	5	15	80	5	50	5	20	65	10	20	25	235	70
2022	1,710	1,370	340	155	180	5	5	15	85	0	50	10	20	75	15	25	35	235	65
2023	1,735	1,385	350	160	190	10	5	15	90	5	45	10	20	80	15	25	30	245	65
2024	1,750	1,390	355	150	205	5	5	15	90	5	45	10	20	75	15	35	35	–	–
2025	1,710	1,355	355	155	200	5	10	10	85	5	50	10	25	70	15	35	35	–	–
2026	1,715	1,370	345	145	200	5	5	15	75	5	45	5	25	65	20	40	35	–	–

Definitions and method · CBS 85640NED (2022–2026), 83503NED (1998–2023)