Postcode · Bilthoven, Utrecht

Postcode 3723: Neighbourhoods De Leijen and Noord

On 1 January 2026, postcode 3723 in Bilthoven (De Leijen and Noord) had 10,195 residents. 24.5% of them (2,500 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than Bilthoven (26.5%) and lower than the national average (29.1%). The largest origin groups are other Europe (5.6%), Indonesia (4.4%) and Morocco (3.1%). 50.8% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 2.4 percentage points.

Residents: 10,195 on 1 January 2026
Migration background: 24.5% 2,500 people
Born abroad: 50.8% of those with a migration background
Change since 2022: +2.4 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

75% 25%

Dutch origin 75.5% 7,695
Migration background 24.5% 2,500

Largest origin groups

Bars show each group’s share of all residents of 3723. For comparison, the line marks Bilthoven and the circle the Netherlands.

Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

5.6% 570 people

Bilthoven 4.6% Netherlands 5.6%
Indonesia

4.4% 445 people

Bilthoven 3.6% Netherlands 1.9%
Morocco

3.1% 320 people

Bilthoven 4.4% Netherlands 2.4%
Other Asia Asia excluding Indonesia and Turkey

3.0% 310 people

Bilthoven 4.9% Netherlands 5.3%
Other Africa Africa excluding Morocco

1.9% 195 people

Bilthoven 2.3% Netherlands 2.3%
Germany

1.9% 190 people

Bilthoven 1.7% Netherlands 1.9%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.7% 175 people

Bilthoven 1.7% Netherlands 1.7%
Suriname

0.78% 80 people

Bilthoven 0.95% Netherlands 2.0%
Belgium

0.74% 75 people

Bilthoven 0.73% Netherlands 0.76%
Turkey

0.54% 55 people

Bilthoven 0.78% Netherlands 2.6%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.54% 55 people

Bilthoven 0.62% Netherlands 1.1%
Poland

0.29% 30 people

Bilthoven 0.37% Netherlands 1.4%

First and second generation

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

51% 49%

Born abroad (first generation) 50.8% 1,270
Born in the Netherlands (second generation) 49.4% 1,235

Men and women

Men: 4,845
Women: 5,350

Compared with all postcodes

Netherlands 29.1% 3723 24.5%

Higher than 66% 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

24.5%

3723
Bilthoven
Netherlands

Show as table

Year	3723	Bilthoven	Netherlands
1998	15.4%	15.4%	16.7%
1999	15.4%	15.6%	17.1%
2000	15.4%	15.6%	17.5%
2001	15.3%	16.0%	18.0%
2002	15.7%	16.3%	18.4%
2003	15.7%	16.3%	18.8%
2004	15.8%	16.4%	19.0%
2005	16.0%	16.4%	19.2%
2006	16.1%	16.4%	19.3%
2007	16.2%	16.5%	19.4%
2008	16.5%	16.4%	19.6%
2009	16.5%	16.8%	19.9%
2010	16.6%	17.2%	20.3%
2011	16.8%	17.6%	20.6%
2012	17.2%	17.9%	20.9%
2013	17.5%	18.2%	21.1%
2014	17.7%	18.5%	21.4%
2015	17.9%	18.9%	21.7%
2016	18.2%	19.2%	22.1%
2017	18.2%	19.5%	22.6%
2018	18.6%	20.0%	23.1%
2019	18.7%	20.4%	23.6%
2020	18.8%	20.8%	24.2%
2021	19.4%	21.3%	24.6%
2022	22.1%	23.8%	26.0%
2023	22.9%	24.7%	27.1%
2024	23.5%	25.5%	27.9%
2025	24.0%	26.0%	28.5%
2026	24.5%	26.5%	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
3721 Zuid West	30.2%	8,480	+3.0 pp	Other Asia
3738 Maartensdijk	15.6%	4,905	+2.2 pp	Other Asia
3722 Zuid Oost	24.2%	4,540	+2.9 pp	Morocco
3734 Noord, Zuid	19.6%	4,380	+1.7 pp	Indonesia
3737 Groenekan	14.2%	2,010	+1.3 pp	Other Europe
3739 Hollandsche Rading	18.0%	1,525	+1.4 pp	Other Europe
3749 Lage Vuursche	17.9%	335	+1.8 pp	Indonesia

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	10,240	8,655	1,580	580	1,000	10	70	95	570	50	245	25	65	245	60	65	80	1,210	375
1999	10,330	8,730	1,595	575	1,020	10	70	95	570	45	255	20	70	230	60	75	95	1,220	380
2000	10,290	8,715	1,580	565	1,020	10	75	100	570	45	240	25	70	230	65	65	90	1,205	375
2001	10,135	8,580	1,555	550	1,010	10	65	105	565	45	230	20	65	235	60	65	95	1,190	365
2002	10,105	8,520	1,585	580	1,005	10	60	100	555	45	235	20	60	265	65	55	115	1,220	370
2003	10,125	8,545	1,585	585	990	5	50	105	550	40	240	25	65	255	75	70	95	1,210	370
2004	10,010	8,430	1,585	585	990	5	60	100	535	40	250	25	65	245	90	70	90	1,185	395
2005	10,010	8,415	1,600	605	980	10	50	105	535	35	260	25	60	260	80	70	95	1,200	395
2006	9,975	8,375	1,605	610	985	15	50	100	520	35	255	30	60	265	90	80	95	1,190	410
2007	9,930	8,325	1,610	605	1,000	15	55	95	530	35	245	25	60	275	90	90	90	1,190	420
2008	9,905	8,270	1,635	610	1,025	15	55	100	505	40	240	25	60	285	95	115	100	1,185	450
2009	9,975	8,325	1,650	620	1,030	10	65	105	495	40	240	25	60	295	100	115	100	1,180	470
2010	9,935	8,285	1,650	615	1,035	15	65	100	505	35	235	25	60	295	100	115	100	1,190	465
2011	9,895	8,230	1,665	610	1,050	10	65	100	510	35	230	25	70	285	110	115	105	1,195	470
2012	9,820	8,125	1,690	615	1,075	20	85	95	495	35	220	30	65	300	105	130	110	1,185	510
2013	9,795	8,080	1,715	630	1,090	25	95	85	485	35	225	30	65	310	100	145	120	1,190	525
2014	9,740	8,020	1,720	625	1,095	30	95	85	490	35	230	30	60	305	110	140	110	1,185	540
2015	9,725	7,985	1,740	610	1,130	35	100	90	490	35	210	30	70	300	115	155	110	1,170	570
2016	9,780	8,000	1,780	615	1,165	35	125	90	480	30	210	30	70	305	120	160	125	1,175	610
2017	9,870	8,070	1,800	625	1,175	40	130	85	470	30	215	25	70	315	115	170	135	1,175	630
2018	9,880	8,040	1,840	635	1,205	40	155	80	465	30	215	20	75	325	120	180	135	1,175	665
2019	9,945	8,085	1,860	625	1,240	40	175	80	460	35	205	20	70	330	135	180	135	1,170	690
2020	10,135	8,230	1,905	630	1,280	45	190	80	455	45	195	25	75	335	135	195	135	1,165	745
2021	10,120	8,155	1,965	655	1,310	45	220	80	450	40	190	30	70	365	135	205	135	1,180	785
2022	10,155	7,910	2,245	720	1,530	40	260	80	505	50	195	30	85	415	160	265	175	1,170	840
2023	10,240	7,895	2,345	780	1,560	45	280	80	480	55	190	35	80	475	150	280	185	1,225	875
2024	10,145	7,760	2,385	770	1,615	55	305	90	470	50	200	35	80	455	160	290	195	–	–
2025	10,155	7,715	2,440	815	1,625	55	310	80	455	50	195	30	80	510	185	305	185	–	–
2026	10,195	7,695	2,500	870	1,635	55	320	80	445	55	190	30	75	570	195	310	175	–	–

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