Postcode · Alphen aan den Rijn, South Holland

Postcode 2403: Neighbourhood Zegersloot

On 1 January 2026, postcode 2403 in Alphen aan den Rijn (Zegersloot) had 10,150 residents. 34.6% of them (3,510 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Alphen aan den Rijn (29.6%) and higher than the national average (29.1%). The largest origin groups are other Asia (6.9%), Morocco (5.8%) and other Europe (3.9%). 57.5% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 2.8 percentage points.

Residents: 10,150 on 1 January 2026
Migration background: 34.6% 3,510 people
Born abroad: 57.5% 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 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

65% 35%

Dutch origin 65.4% 6,635
Migration background 34.6% 3,510

Largest origin groups

Bars show each group’s share of all residents of 2403. For comparison, the line marks Alphen aan den Rijn and the circle the Netherlands.

Other Asia Asia excluding Indonesia and Turkey

6.9% 700 people

Alphen aan den Rijn 5.9% Netherlands 5.3%
Morocco

5.8% 585 people

Alphen aan den Rijn 3.4% Netherlands 2.4%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

3.9% 395 people

Alphen aan den Rijn 4.5% Netherlands 5.6%
Other Africa Africa excluding Morocco

3.8% 390 people

Alphen aan den Rijn 2.3% Netherlands 2.3%
Poland

3.2% 325 people

Alphen aan den Rijn 2.7% Netherlands 1.4%
Indonesia

2.5% 250 people

Alphen aan den Rijn 2.9% Netherlands 1.9%
Suriname

2.0% 205 people

Alphen aan den Rijn 1.9% Netherlands 2.0%
Turkey

1.9% 195 people

Alphen aan den Rijn 1.8% Netherlands 2.6%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.7% 170 people

Alphen aan den Rijn 1.6% Netherlands 1.7%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

1.3% 130 people

Alphen aan den Rijn 1.1% Netherlands 1.1%
Germany

1.1% 110 people

Alphen aan den Rijn 1.2% Netherlands 1.9%
Belgium

0.49% 50 people

Alphen aan den Rijn 0.37% Netherlands 0.76%

First and second generation

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

58% 43%

Born abroad (first generation) 57.5% 2,020
Born in the Netherlands (second generation) 42.6% 1,495

Men and women

Men: 5,125
Women: 5,020

Compared with all postcodes

Netherlands 29.1% 2403 34.6%

Higher than 81% 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

34.6%

2403
Alphen aan den Rijn
Netherlands

Show as table

Year	2403	Alphen aan den Rijn	Netherlands
1998	21.9%	17.0%	16.7%
1999	23.1%	17.6%	17.1%
2000	23.6%	18.1%	17.5%
2001	24.1%	18.5%	18.0%
2002	24.9%	19.0%	18.4%
2003	24.7%	19.4%	18.8%
2004	24.6%	19.4%	19.0%
2005	24.6%	19.5%	19.2%
2006	24.1%	19.5%	19.3%
2007	24.6%	19.6%	19.4%
2008	25.1%	20.0%	19.6%
2009	25.5%	20.3%	19.9%
2010	26.1%	20.6%	20.3%
2011	26.1%	20.8%	20.6%
2012	26.4%	21.0%	20.9%
2013	26.2%	21.2%	21.1%
2014	26.2%	21.3%	21.4%
2015	26.4%	21.5%	21.7%
2016	26.9%	21.9%	22.1%
2017	27.9%	22.7%	22.6%
2018	28.7%	23.3%	23.1%
2019	29.6%	23.9%	23.6%
2020	30.5%	24.4%	24.2%
2021	30.7%	24.9%	24.6%
2022	31.8%	26.2%	26.0%
2023	32.2%	27.4%	27.1%
2024	33.4%	28.1%	27.9%
2025	34.0%	28.6%	28.5%
2026	34.6%	29.6%	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).

Nearby postcodes

				Largest group
2402 Ridderveld	37.0%	13,460	+3.4 pp	Other Asia
2461 Langeraar	15.3%	9,775	+2.5 pp	Other Asia
2406 Lage Zijde	20.6%	9,725	+1.7 pp	Other Europe
2445 Noordeinde	10.1%	1,240	±0.0 pp	Other Europe
2407 Steekterpolder	19.4%	1,080	+11.0 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	10,935	8,545	2,395	600	1,790	110	385	255	500	110	235	15	45	305	185	155	90	1,130	1,265
1999	11,040	8,495	2,550	630	1,915	120	375	255	500	140	235	15	45	335	230	185	110	1,175	1,375
2000	10,840	8,290	2,555	615	1,935	105	400	250	470	170	220	20	50	325	230	210	100	1,135	1,420
2001	10,830	8,220	2,615	610	2,005	115	420	255	455	180	215	20	45	330	260	225	95	1,110	1,505
2002	10,835	8,135	2,700	630	2,070	120	435	250	465	190	210	25	50	345	290	225	95	1,140	1,560
2003	10,750	8,090	2,660	605	2,050	110	445	230	450	180	205	30	50	320	305	225	105	1,110	1,555
2004	10,630	8,010	2,620	590	2,030	90	450	225	425	170	195	25	45	325	305	260	105	1,070	1,555
2005	10,630	8,015	2,620	600	2,015	95	455	230	415	155	185	30	50	335	280	290	95	1,075	1,545
2006	10,415	7,900	2,515	580	1,940	95	445	205	395	160	170	35	45	330	270	275	95	1,020	1,495
2007	10,305	7,770	2,535	580	1,965	90	480	210	390	165	165	35	50	330	260	275	95	1,015	1,525
2008	10,255	7,680	2,575	605	1,970	95	490	200	370	160	170	45	55	335	285	280	90	1,010	1,570
2009	10,285	7,670	2,620	615	2,005	95	495	215	355	155	170	65	50	330	285	305	100	1,020	1,600
2010	10,370	7,660	2,710	645	2,065	90	520	225	350	170	175	85	55	330	300	315	95	1,035	1,675
2011	10,290	7,600	2,690	645	2,045	85	515	220	345	155	170	70	50	355	320	315	90	1,035	1,655
2012	10,225	7,525	2,700	665	2,040	90	520	205	340	155	175	90	50	350	330	295	105	1,045	1,655
2013	10,135	7,480	2,655	650	2,005	90	480	205	340	145	165	100	55	330	355	285	105	1,035	1,625
2014	10,080	7,440	2,640	645	1,995	95	475	195	325	130	160	105	50	330	360	305	110	1,015	1,625
2015	10,035	7,385	2,650	645	2,005	90	505	190	315	130	160	115	45	325	340	330	105	1,005	1,645
2016	10,075	7,360	2,715	675	2,040	95	520	195	315	125	160	130	50	335	350	335	105	1,030	1,685
2017	10,095	7,275	2,820	685	2,135	120	520	195	305	125	160	160	40	325	340	425	105	1,045	1,775
2018	10,175	7,250	2,925	725	2,200	125	550	195	295	130	160	170	40	355	345	450	110	1,080	1,845
2019	10,200	7,180	3,020	760	2,260	140	570	195	285	130	155	190	50	365	350	470	120	1,095	1,925
2020	10,265	7,130	3,135	780	2,355	165	580	190	275	135	140	235	45	360	365	515	130	1,115	2,020
2021	10,200	7,070	3,130	810	2,320	155	580	205	275	130	135	250	40	385	350	500	125	1,130	1,995
2022	10,135	6,910	3,225	830	2,400	150	590	190	285	140	125	270	45	380	355	550	145	1,155	1,990
2023	10,100	6,845	3,250	820	2,430	165	565	210	270	135	125	265	45	390	360	580	145	1,135	2,040
2024	10,110	6,725	3,380	850	2,535	175	585	210	265	125	115	300	45	385	375	655	145	–	–
2025	10,175	6,720	3,455	880	2,575	165	590	205	255	135	110	320	40	410	390	680	160	–	–
2026	10,150	6,635	3,510	885	2,630	195	585	205	250	130	110	325	50	395	390	700	170	–	–

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