City · De Bilt, Utrecht

Bilthoven: Migration background and origin

On 1 January 2026, Bilthoven had 23,215 residents. 26.5% of them (6,160 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than the municipality of De Bilt (22.6%) and lower than the national average (29.1%). The largest origin groups are other Asia (4.9%), other Europe (4.6%) and Morocco (4.4%). 51.6% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 2.8 percentage points.

Residents: 23,215 on 1 January 2026
Migration background: 26.5% 6,160 people
Born abroad: 51.6% of those with a migration background
Change since 2022: +2.8 pp in share with a migration background

Migration background, share of residents

Share of residents with a migration background per postcode.

Where residents come from

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

Dutch origin and migration background

73% 27%

Dutch origin 73.5% 17,055
Migration background 26.5% 6,160

Largest origin groups

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

Other Asia Asia excluding Indonesia and Turkey

4.9% 1,145 people

Municipality of De Bilt 4.0% Netherlands 5.3%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

4.6% 1,070 people

Municipality of De Bilt 4.2% Netherlands 5.6%
Morocco

4.4% 1,010 people

Municipality of De Bilt 3.3% Netherlands 2.4%
Indonesia

3.6% 830 people

Municipality of De Bilt 2.9% Netherlands 1.9%
Other Africa Africa excluding Morocco

2.3% 530 people

Municipality of De Bilt 1.8% Netherlands 2.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.7% 395 people

Municipality of De Bilt 1.6% Netherlands 1.7%
Germany

1.7% 385 people

Municipality of De Bilt 1.7% Netherlands 1.9%
Suriname

0.95% 220 people

Municipality of De Bilt 0.84% Netherlands 2.0%
Turkey

0.78% 180 people

Municipality of De Bilt 0.72% Netherlands 2.6%
Belgium

0.73% 170 people

Municipality of De Bilt 0.62% Netherlands 0.76%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.62% 145 people

Municipality of De Bilt 0.54% Netherlands 1.1%
Poland

0.37% 85 people

Municipality of De Bilt 0.35% Netherlands 1.4%

First and second generation

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

52% 48%

Born abroad (first generation) 51.6% 3,180
Born in the Netherlands (second generation) 48.5% 2,985

Men and women

Men: 11,020
Women: 12,200

Compared with all cities

Netherlands 29.1% Bilthoven 26.5%

Higher than 91% of all cities in the Netherlands

Trend since 1998

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

Show

Measure % Residents

New CBS classification

26.5%

Bilthoven
Municipality of De Bilt
Netherlands

Show as table

Year	Bilthoven	Municipality of De Bilt	Netherlands
1998	15.4%	13.3%	16.7%
1999	15.6%	13.4%	17.1%
2000	15.6%	13.5%	17.5%
2001	16.0%	13.9%	18.0%
2002	16.3%	14.3%	18.4%
2003	16.3%	14.5%	18.8%
2004	16.4%	14.4%	19.0%
2005	16.4%	14.4%	19.2%
2006	16.4%	14.4%	19.3%
2007	16.5%	14.5%	19.4%
2008	16.4%	14.6%	19.6%
2009	16.8%	14.9%	19.9%
2010	17.2%	15.1%	20.3%
2011	17.6%	15.4%	20.6%
2012	17.9%	15.7%	20.9%
2013	18.2%	15.9%	21.1%
2014	18.5%	16.2%	21.4%
2015	18.9%	16.5%	21.7%
2016	19.2%	16.7%	22.1%
2017	19.5%	17.1%	22.6%
2018	20.0%	17.5%	23.1%
2019	20.4%	17.9%	23.6%
2020	20.8%	18.3%	24.2%
2021	21.3%	18.7%	24.6%
2022	23.8%	20.6%	26.0%
2023	24.7%	21.6%	27.1%
2024	25.5%	22.2%	27.9%
2025	26.0%	22.5%	28.5%
2026	26.5%	22.6%	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).

Postcodes in Bilthoven

				Largest group
3723 De Leijen, Noord	24.5%	10,195	+2.4 pp	Other Europe
3721 Zuid West	30.2%	8,480	+3.0 pp	Other Asia
3722 Zuid Oost	24.2%	4,540	+2.9 pp	Morocco

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	22,260	18,830	3,425	1,200	2,220	50	275	220	1,060	90	515	35	130	520	140	235	150	2,370	1,065
1999	22,405	18,905	3,490	1,180	2,310	50	285	215	1,065	85	515	35	145	485	160	275	175	2,380	1,115
2000	22,325	18,845	3,485	1,165	2,325	50	320	230	1,050	80	495	40	145	485	165	260	170	2,340	1,150
2001	22,185	18,625	3,560	1,180	2,375	40	345	235	1,050	85	490	40	140	510	180	250	190	2,375	1,190
2002	22,205	18,595	3,615	1,215	2,410	45	370	235	1,020	95	495	45	135	540	195	255	195	2,375	1,240
2003	22,155	18,540	3,615	1,225	2,375	40	375	225	1,015	85	490	50	140	545	200	255	180	2,375	1,240
2004	22,130	18,500	3,640	1,245	2,380	30	395	225	990	90	490	45	140	570	215	260	175	2,345	1,280
2005	22,055	18,445	3,625	1,245	2,355	35	370	240	975	85	500	50	140	555	210	260	180	2,335	1,275
2006	21,980	18,385	3,600	1,245	2,350	40	390	215	970	85	490	60	130	565	205	260	185	2,320	1,275
2007	21,905	18,300	3,610	1,250	2,360	40	395	205	975	90	485	55	125	585	210	265	180	2,325	1,280
2008	21,935	18,340	3,600	1,250	2,360	45	380	220	945	85	475	50	130	595	225	275	185	2,310	1,290
2009	21,995	18,300	3,695	1,290	2,405	40	410	235	925	90	475	55	125	635	240	280	185	2,335	1,365
2010	22,020	18,240	3,780	1,310	2,485	40	425	230	935	90	465	45	130	670	250	300	215	2,385	1,410
2011	22,050	18,170	3,875	1,340	2,545	40	445	235	920	95	460	55	140	685	260	320	230	2,400	1,480
2012	22,035	18,090	3,940	1,360	2,580	50	465	225	895	95	460	60	135	705	280	355	215	2,385	1,560
2013	22,005	17,995	4,010	1,365	2,670	60	485	205	885	85	465	70	135	695	290	395	265	2,380	1,635
2014	21,900	17,840	4,060	1,380	2,680	75	505	210	875	85	475	80	125	700	295	400	235	2,390	1,675
2015	21,920	17,785	4,135	1,355	2,780	75	530	215	875	95	425	80	140	710	300	450	240	2,365	1,775
2016	22,120	17,870	4,250	1,355	2,895	85	565	235	855	85	425	70	145	715	310	505	255	2,355	1,900
2017	22,405	18,035	4,370	1,365	3,005	95	590	225	850	90	425	60	140	740	300	585	270	2,355	2,020
2018	22,440	17,955	4,485	1,385	3,100	105	595	215	830	95	425	65	150	745	315	690	255	2,370	2,120
2019	22,550	17,950	4,600	1,390	3,210	105	620	210	830	100	405	55	145	785	355	715	275	2,390	2,205
2020	22,775	18,040	4,735	1,420	3,325	115	660	210	815	115	390	70	145	815	370	750	290	2,395	2,355
2021	22,895	18,015	4,880	1,465	3,410	115	745	220	800	105	385	85	140	855	370	775	280	2,420	2,460
2022	23,105	17,605	5,495	1,550	3,955	130	870	205	885	115	395	80	175	905	440	945	365	2,420	2,665
2023	23,310	17,560	5,755	1,645	4,100	160	910	215	855	125	390	90	165	995	450	1,000	380	2,520	2,825
2024	23,225	17,305	5,915	1,635	4,280	180	955	220	850	135	395	95	170	970	485	1,055	410	–	–
2025	23,255	17,205	6,050	1,680	4,365	185	960	205	845	150	400	85	170	1,015	510	1,125	390	–	–
2026	23,215	17,055	6,160	1,715	4,450	180	1,010	220	830	145	385	85	170	1,070	530	1,145	395	–	–

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