Postcode · Leiden, South Holland

Postcode 2333: Neighbourhood Boerhaavedistrict

On 1 January 2026, postcode 2333 in Leiden (Boerhaavedistrict) had 4,795 residents. 49.3% of them (2,365 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Leiden (38.2%) and higher than the national average (29.1%). The largest origin groups are other Europe (18.4%), other Asia (13.5%) and other Americas & Oceania (4.3%). 78.9% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 14.2 percentage points.

Residents: 4,795 on 1 January 2026
Migration background: 49.3% 2,365 people
Born abroad: 78.9% of those with a migration background
Change since 2022: +14.2 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

51% 49%

Dutch origin 50.7% 2,430
Migration background 49.3% 2,365

Largest origin groups

Bars show each group’s share of all residents of 2333. For comparison, the line marks Leiden and the circle the Netherlands.

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

18.4% 880 people

Leiden 9.6% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

13.5% 645 people

Leiden 7.4% Netherlands 5.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

4.3% 205 people

Leiden 3.2% Netherlands 1.7%
Germany

2.9% 140 people

Leiden 2.0% Netherlands 1.9%
Indonesia

2.1% 100 people

Leiden 2.4% Netherlands 1.9%
Turkey

1.7% 80 people

Leiden 2.0% Netherlands 2.6%
Other Africa Africa excluding Morocco

1.7% 80 people

Leiden 3.0% Netherlands 2.3%
Morocco

1.0% 50 people

Leiden 4.2% Netherlands 2.4%
Poland

1.0% 50 people

Leiden 1.2% Netherlands 1.4%
Belgium

1.0% 50 people

Leiden 0.73% Netherlands 0.76%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.94% 45 people

Leiden 1.1% Netherlands 1.1%
Suriname

0.83% 40 people

Leiden 1.4% Netherlands 2.0%

First and second generation

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

79% 21%

Born abroad (first generation) 78.9% 1,865
Born in the Netherlands (second generation) 20.9% 495

Men and women

Men: 2,250
Women: 2,545

Compared with all postcodes

Netherlands 29.1% 2333 49.3%

Higher than 92% 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

49.3%

2333
Leiden
Netherlands

Show as table

Year	2333	Leiden	Netherlands
1998	31.7%	21.2%	16.7%
1999	33.0%	21.7%	17.1%
2000	32.3%	22.5%	17.5%
2001	28.0%	23.1%	18.0%
2002	34.0%	24.0%	18.4%
2003	31.6%	24.8%	18.8%
2004	42.1%	25.4%	19.0%
2005	43.8%	25.7%	19.2%
2006	40.8%	25.9%	19.3%
2007	37.1%	26.1%	19.4%
2008	25.4%	26.6%	19.6%
2009	25.7%	27.2%	19.9%
2010	22.1%	27.4%	20.3%
2011	24.3%	27.9%	20.6%
2012	23.3%	28.3%	20.9%
2013	24.6%	28.5%	21.1%
2014	24.5%	29.0%	21.4%
2015	24.3%	29.3%	21.7%
2016	27.9%	29.8%	22.1%
2017	30.7%	30.2%	22.6%
2018	31.3%	30.6%	23.1%
2019	32.4%	31.3%	23.6%
2020	33.1%	32.2%	24.2%
2021	32.0%	32.2%	24.6%
2022	35.1%	34.0%	26.0%
2023	37.3%	35.6%	27.1%
2024	44.5%	36.5%	27.9%
2025	45.8%	37.5%	28.5%
2026	49.3%	38.2%	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
2312 Binnenstad-Noord	40.3%	14,565	+2.4 pp	Other Europe
2332 Morsdistrict	41.9%	10,980	+6.6 pp	Other Asia
2341 Oud Oegstgeest, Oudenhof	31.1%	10,030	+1.9 pp	Other Europe
2342 West, Oud Oegstgeest	32.1%	4,800	+6.4 pp	Other Europe
2334 Boerhaavedistrict	42.0%	2,735	+5.1 pp	Other Asia

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	1,465	1,005	465	210	250	5	5	10	105	30	45	10	30	125	20	45	30	345	120
1999	1,530	1,020	505	220	290	5	5	10	110	40	50	10	25	135	25	50	45	365	140
2000	1,455	990	470	200	270	5	0	10	95	40	40	10	25	125	30	55	35	335	135
2001	1,395	1,005	390	185	215	0	0	10	70	40	35	10	20	120	20	45	30	280	110
2002	1,530	1,015	520	260	250	5	5	15	70	50	40	5	20	195	20	55	30	380	140
2003	1,675	1,145	530	245	285	5	5	10	75	50	40	5	15	185	35	60	45	360	170
2004	2,020	1,170	850	325	525	10	5	10	70	45	45	5	15	260	130	220	35	425	430
2005	2,080	1,170	910	260	650	15	5	10	75	55	40	10	10	200	190	265	35	360	550
2006	1,935	1,145	790	205	580	10	10	5	70	55	45	10	10	140	180	210	40	310	475
2007	1,845	1,160	685	185	505	5	5	10	75	50	35	10	10	130	155	160	45	290	390
2008	1,535	1,150	390	120	270	0	0	15	75	40	40	10	15	55	45	70	25	220	170
2009	1,520	1,130	390	120	270	0	0	15	70	35	35	10	10	65	45	75	30	210	175
2010	1,450	1,130	320	125	195	0	5	15	70	25	45	5	10	65	10	35	35	215	100
2011	1,725	1,305	420	150	265	5	5	25	80	45	45	10	15	80	15	45	45	260	160
2012	1,955	1,495	455	170	290	5	0	30	75	70	50	10	20	90	20	50	40	280	180
2013	2,295	1,725	565	205	360	5	10	30	80	80	55	15	15	120	25	80	50	320	255
2014	2,310	1,745	565	210	355	10	5	30	75	75	55	10	20	125	25	80	55	325	245
2015	2,280	1,725	555	200	355	15	5	30	70	65	50	10	20	120	20	95	55	310	245
2016	2,150	1,550	600	205	395	15	5	15	75	50	55	10	15	125	20	160	55	315	285
2017	2,245	1,555	690	230	460	20	0	20	70	40	55	10	15	150	30	215	65	335	355
2018	2,830	1,945	885	325	560	20	10	20	85	40	80	15	20	210	40	260	85	450	430
2019	2,820	1,905	915	360	555	20	10	20	85	30	90	20	20	230	40	260	90	490	420
2020	2,795	1,870	925	375	545	20	10	20	80	35	85	25	25	240	35	255	90	500	425
2021	3,205	2,180	1,025	440	585	20	25	35	90	25	85	20	25	310	35	260	95	570	455
2022	3,330	2,160	1,170	505	665	20	30	30	100	25	110	20	35	345	50	310	100	620	475
2023	3,295	2,060	1,230	520	715	35	40	35	95	25	110	20	35	355	50	330	110	640	530
2024	4,300	2,385	1,915	825	1,090	60	50	45	105	35	145	45	45	590	70	550	170	–	–
2025	4,440	2,400	2,035	905	1,130	70	50	40	105	40	135	55	40	675	75	575	180	–	–
2026	4,795	2,430	2,365	1,115	1,245	80	50	40	100	45	140	50	50	880	80	645	205	–	–

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