Postcode · Voorschoten, South Holland

Postcode 2251: Neighbourhoods Vlietwijk and Krimwijk

On 1 January 2026, postcode 2251 in Voorschoten (Vlietwijk and Krimwijk) had 11,045 residents. 27.1% of them (2,990 people) have a migration background: they were born abroad or have at least one parent who was. That is about the same as Voorschoten (27.0%) and lower than the national average (29.1%). The largest origin groups are other Europe (5.9%), other Asia (5.1%) and Indonesia (3.2%). 57.2% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 1.7 percentage points.

Residents: 11,045 on 1 January 2026
Migration background: 27.1% 2,990 people
Born abroad: 57.2% of those with a migration background
Change since 2022: +1.7 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

73% 27%

Dutch origin 72.9% 8,055
Migration background 27.1% 2,990

Largest origin groups

Bars show each group’s share of all residents of 2251. For comparison, the line marks Voorschoten and the circle the Netherlands.

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

5.9% 650 people

Voorschoten 6.6% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

5.1% 565 people

Voorschoten 5.1% Netherlands 5.3%
Indonesia

3.2% 350 people

Voorschoten 3.2% Netherlands 1.9%
Morocco

2.2% 245 people

Voorschoten 1.5% Netherlands 2.4%
Other Africa Africa excluding Morocco

2.2% 240 people

Voorschoten 2.5% Netherlands 2.3%
Germany

1.9% 215 people

Voorschoten 1.9% Netherlands 1.9%
Turkey

1.9% 205 people

Voorschoten 1.3% Netherlands 2.6%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.8% 200 people

Voorschoten 2.0% Netherlands 1.7%
Suriname

1.2% 135 people

Voorschoten 1.0% Netherlands 2.0%
Poland

0.77% 85 people

Voorschoten 0.81% Netherlands 1.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.59% 65 people

Voorschoten 0.67% Netherlands 1.1%
Belgium

0.41% 45 people

Voorschoten 0.50% Netherlands 0.76%

First and second generation

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

57% 43%

Born abroad (first generation) 57.2% 1,710
Born in the Netherlands (second generation) 42.8% 1,280

Men and women

Men: 5,390
Women: 5,655

Compared with all postcodes

Netherlands 29.1% 2251 27.1%

Higher than 70% 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

27.1%

2251
Voorschoten
Netherlands

Show as table

Year	2251	Voorschoten	Netherlands
1998	18.8%	19.2%	16.7%
1999	18.9%	19.3%	17.1%
2000	19.2%	19.4%	17.5%
2001	19.2%	19.6%	18.0%
2002	19.9%	19.9%	18.4%
2003	20.3%	20.2%	18.8%
2004	20.8%	20.3%	19.0%
2005	20.7%	20.2%	19.2%
2006	20.8%	20.5%	19.3%
2007	21.0%	20.5%	19.4%
2008	21.4%	20.5%	19.6%
2009	21.4%	20.5%	19.9%
2010	21.2%	20.6%	20.3%
2011	21.1%	20.4%	20.6%
2012	21.2%	20.5%	20.9%
2013	21.5%	20.8%	21.1%
2014	21.4%	20.9%	21.4%
2015	21.3%	20.8%	21.7%
2016	21.4%	21.0%	22.1%
2017	22.2%	21.5%	22.6%
2018	22.6%	21.6%	23.1%
2019	23.0%	22.0%	23.6%
2020	23.6%	22.6%	24.2%
2021	23.9%	22.8%	24.6%
2022	25.4%	24.4%	26.0%
2023	25.9%	25.4%	27.1%
2024	26.6%	26.0%	27.9%
2025	26.6%	26.5%	28.5%
2026	27.1%	27.0%	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
2251 Vlietwijk, Krimwijk	27.1%	11,045	+1.7 pp	Other Europe
2324 Bos- en Gasthuisdistrict	39.9%	9,845	+2.0 pp	Other Asia
2253 Adegeest, Noord-Hofland	27.4%	8,735	+2.8 pp	Other Europe
2266 Leidschendam - Zuid en omgeving, Stompwijk	28.8%	7,005	+6.9 pp	Other Europe
2252 Boschgeest, Nassauwijk	26.9%	5,380	+4.1 pp	Other Europe
2265 't Lien / De Rietvink, Leidschendam - Zuid en omgeving	32.1%	5,115	+3.4 pp	Other Europe
2323 Bos- en Gasthuisdistrict	24.4%	205	+6.7 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	8,860	7,195	1,665	660	1,005	110	105	95	375	25	185	15	45	415	70	130	95	1,090	575
1999	8,855	7,175	1,675	660	1,010	110	110	105	375	25	185	10	45	420	65	140	80	1,095	580
2000	8,725	7,055	1,675	665	1,000	105	125	90	365	30	175	5	50	435	60	145	80	1,090	590
2001	8,675	7,010	1,665	655	1,020	110	130	95	355	25	170	5	45	435	70	150	85	1,060	605
2002	8,670	6,950	1,725	675	1,050	105	125	95	350	35	175	5	45	450	85	155	100	1,095	630
2003	8,780	7,000	1,780	670	1,110	100	145	105	350	35	160	10	40	460	85	190	100	1,100	685
2004	8,870	7,025	1,845	695	1,150	95	155	105	350	30	165	5	40	485	95	210	110	1,120	720
2005	9,175	7,275	1,895	705	1,190	115	155	115	355	40	165	10	35	495	95	215	100	1,125	775
2006	9,445	7,480	1,965	735	1,225	125	165	115	360	45	175	15	40	505	100	215	100	1,160	800
2007	9,450	7,465	1,985	755	1,230	125	175	115	355	45	180	15	40	520	100	210	105	1,165	825
2008	9,530	7,495	2,035	780	1,250	120	175	115	365	45	190	30	40	520	105	210	115	1,200	835
2009	9,640	7,585	2,060	790	1,260	120	175	110	365	50	195	40	35	520	100	240	100	1,200	855
2010	10,245	8,070	2,175	835	1,340	130	185	115	380	55	205	40	40	550	90	255	130	1,275	900
2011	10,615	8,375	2,245	860	1,385	145	190	125	385	55	205	60	40	555	120	240	125	1,305	930
2012	10,965	8,640	2,330	880	1,450	150	195	125	395	60	225	65	35	555	130	265	130	1,330	1,000
2013	11,185	8,780	2,400	900	1,500	145	210	130	395	65	235	65	40	560	130	275	150	1,355	1,050
2014	11,215	8,815	2,400	880	1,525	140	220	130	385	60	230	70	35	545	135	305	150	1,330	1,075
2015	11,255	8,855	2,400	880	1,520	145	230	125	370	55	225	70	35	550	130	320	145	1,315	1,085
2016	11,265	8,850	2,415	885	1,530	145	235	125	360	50	225	70	35	555	125	330	160	1,320	1,095
2017	11,290	8,780	2,510	920	1,590	145	245	130	365	55	230	70	35	585	125	365	160	1,365	1,145
2018	11,380	8,805	2,575	960	1,615	145	250	135	365	60	235	70	45	610	140	370	150	1,395	1,180
2019	11,380	8,760	2,620	965	1,655	150	250	130	355	60	240	70	40	615	160	385	165	1,395	1,225
2020	11,400	8,715	2,685	985	1,700	150	230	135	355	65	240	75	40	630	180	410	175	1,435	1,250
2021	11,395	8,675	2,720	970	1,750	150	235	135	350	70	225	85	40	620	200	435	175	1,400	1,320
2022	11,375	8,485	2,885	1,010	1,880	165	230	135	380	85	220	85	50	655	210	470	195	1,390	1,330
2023	11,295	8,360	2,930	1,040	1,890	170	240	140	380	70	220	90	45	685	200	490	190	1,425	1,340
2024	11,215	8,235	2,980	1,035	1,945	175	240	140	375	75	215	90	45	685	215	520	210	–	–
2025	11,075	8,125	2,950	985	1,965	195	240	140	360	70	210	90	45	635	230	525	210	–	–
2026	11,045	8,055	2,990	995	2,000	205	245	135	350	65	215	85	45	650	240	565	200	–	–

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