Postcode · Valkenburg (Katwijk), South Holland

Postcode 2235: Neighbourhoods 't Joght and 't Duyfrak

On 1 January 2026, postcode 2235 in Valkenburg (Katwijk) ('t Joght and 't Duyfrak) had 6,245 residents. 14.7% of them (915 people) have a migration background: they were born abroad or have at least one parent who was. That is about the same as the municipality of Katwijk (14.9%) and lower than the national average (29.1%). The largest origin groups are other Europe (3.0%), other Asia (2.9%) and other Americas & Oceania (1.5%). 53.6% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 1.7 percentage points.

Residents: 6,245 on 1 January 2026
Migration background: 14.7% 915 people
Born abroad: 53.6% 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

85% 15%

Dutch origin 85.4% 5,335
Migration background 14.7% 915

Largest origin groups

Bars show each group’s share of all residents of 2235. For comparison, the line marks Municipality of Katwijk and the circle the Netherlands.

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

3.0% 185 people

Municipality of Katwijk 3.2% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

2.9% 180 people

Municipality of Katwijk 3.5% Netherlands 5.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.5% 95 people

Municipality of Katwijk 1.0% Netherlands 1.7%
Indonesia

1.2% 75 people

Municipality of Katwijk 0.87% Netherlands 1.9%
Germany

1.2% 75 people

Municipality of Katwijk 0.92% Netherlands 1.9%
Morocco

1.1% 70 people

Municipality of Katwijk 0.86% Netherlands 2.4%
Other Africa Africa excluding Morocco

1.1% 70 people

Municipality of Katwijk 1.5% Netherlands 2.3%
Poland

0.72% 45 people

Municipality of Katwijk 1.2% Netherlands 1.4%
Turkey

0.64% 40 people

Municipality of Katwijk 0.63% Netherlands 2.6%
Suriname

0.56% 35 people

Municipality of Katwijk 0.48% Netherlands 2.0%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.40% 25 people

Municipality of Katwijk 0.29% Netherlands 1.1%
Belgium

0.32% 20 people

Municipality of Katwijk 0.24% Netherlands 0.76%

First and second generation

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

54% 46%

Born abroad (first generation) 53.6% 490
Born in the Netherlands (second generation) 46.4% 425

Men and women

Men: 3,150
Women: 3,100

Compared with all postcodes

Netherlands 29.1% 2235 14.7%

Higher than 40% 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

14.7%

2235
Municipality of Katwijk
Netherlands

Show as table

Year	2235	Municipality of Katwijk	Netherlands
1998	4.8%	6.6%	16.7%
1999	5.3%	6.9%	17.1%
2000	5.3%	7.2%	17.5%
2001	5.7%	7.4%	18.0%
2002	5.6%	7.7%	18.4%
2003	5.6%	7.9%	18.8%
2004	5.9%	7.9%	19.0%
2005	6.1%	8.1%	19.2%
2006	5.9%	8.2%	19.3%
2007	6.4%	8.3%	19.4%
2008	6.5%	8.3%	19.6%
2009	6.6%	8.5%	19.9%
2010	6.4%	9.2%	20.3%
2011	6.5%	9.6%	20.6%
2012	7.3%	9.8%	20.9%
2013	7.7%	10.1%	21.1%
2014	7.8%	10.0%	21.4%
2015	9.9%	10.4%	21.7%
2016	10.6%	11.0%	22.1%
2017	11.3%	11.0%	22.6%
2018	11.5%	11.2%	23.1%
2019	11.7%	11.5%	23.6%
2020	11.8%	11.5%	24.2%
2021	12.1%	12.0%	24.6%
2022	12.9%	12.8%	26.0%
2023	13.4%	13.5%	27.1%
2024	14.0%	14.2%	27.9%
2025	14.3%	14.5%	28.5%
2026	14.7%	14.9%	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
2231 Rijnsburg	15.4%	16,860	+2.4 pp	Other Europe
2332 Morsdistrict	41.9%	10,980	+6.6 pp	Other Asia
2331 Stevenshofdistrict	24.3%	10,645	+3.1 pp	Other Asia
2241 Noordoostelijk deel der gemeente	38.6%	10,530	+3.2 pp	Other Europe
2223 Katwijk aan den Rijn	23.8%	6,325	+4.1 pp	Other Asia
2342 West, Oud Oegstgeest	32.1%	4,800	+6.4 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	3,560	3,390	170	80	85	5	5	5	35	15	40	0	0	40	5	10	5	125	45
1999	3,580	3,390	190	95	100	0	5	5	35	10	35	5	0	55	10	20	15	145	50
2000	3,605	3,410	190	90	105	0	5	0	40	15	40	5	5	40	10	20	15	140	55
2001	3,745	3,535	215	100	120	0	5	0	40	15	40	5	5	50	10	25	25	155	65
2002	3,760	3,555	210	90	125	5	5	5	45	15	40	10	5	35	10	20	20	145	60
2003	3,770	3,555	210	95	125	0	0	0	40	15	35	5	5	50	15	30	25	150	60
2004	3,815	3,585	225	100	130	0	5	5	45	10	40	5	5	50	15	30	20	160	65
2005	3,880	3,645	235	95	135	0	15	5	45	15	35	10	5	45	10	30	15	155	80
2006	3,905	3,675	230	90	140	0	15	5	45	15	40	10	10	30	15	20	25	150	85
2007	4,035	3,780	260	105	155	0	15	5	50	10	40	15	5	45	15	25	35	165	90
2008	4,125	3,855	270	115	155	0	15	10	45	10	40	15	5	55	25	20	30	170	95
2009	4,175	3,900	275	115	160	0	15	10	45	10	45	10	0	60	20	25	35	170	100
2010	4,320	4,045	275	115	155	0	10	15	45	15	40	5	10	60	25	20	25	175	95
2011	4,445	4,160	290	130	160	0	10	15	45	15	45	15	10	60	25	20	30	190	95
2012	4,770	4,425	350	155	190	5	15	20	55	15	45	15	15	80	20	20	40	225	125
2013	4,865	4,495	375	170	205	5	10	25	60	20	50	15	10	95	25	30	30	245	130
2014	4,940	4,555	385	170	215	5	15	15	60	20	45	20	15	90	30	30	40	250	135
2015	5,250	4,730	520	205	320	20	35	30	65	20	55	35	15	100	30	70	50	300	220
2016	5,420	4,845	575	225	350	25	35	35	70	20	65	40	10	110	35	80	50	320	255
2017	5,590	4,960	630	245	385	30	40	35	75	15	55	45	15	130	45	90	55	340	290
2018	5,730	5,070	660	255	405	35	45	30	75	20	65	50	15	125	60	95	45	355	305
2019	5,925	5,230	695	265	430	35	55	35	70	20	65	60	15	125	65	105	45	365	330
2020	6,145	5,420	725	285	440	30	55	40	70	15	65	60	20	140	60	115	55	390	335
2021	6,280	5,520	760	285	475	35	70	40	75	20	60	50	20	155	55	115	65	380	375
2022	6,265	5,455	810	305	505	40	60	40	75	25	70	50	25	155	65	130	70	390	375
2023	6,275	5,440	840	330	515	35	65	40	75	25	80	50	20	180	65	145	70	420	380
2024	6,270	5,400	875	330	545	35	60	40	75	25	85	40	25	180	65	165	80	–	–
2025	6,270	5,375	895	335	560	35	70	35	75	25	80	45	25	185	65	175	80	–	–
2026	6,245	5,335	915	325	585	40	70	35	75	25	75	45	20	185	70	180	95	–	–

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