Postcode · Koedijk, North Holland

Postcode 1831: Neighbourhood Daalmeer/Koedijk

On 1 January 2026, postcode 1831 in Koedijk (Daalmeer/Koedijk) had 2,410 residents. 18.3% of them (440 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than the municipality of Alkmaar (26.4%) and lower than the national average (29.1%). The largest origin groups are other Europe (4.4%), other Asia (3.1%) and other Americas & Oceania (2.1%). 46.6% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 0.9 percentage points.

Residents: 2,410 on 1 January 2026
Migration background: 18.3% 440 people
Born abroad: 46.6% of those with a migration background
Change since 2022: +0.9 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

82% 18%

Dutch origin 81.7% 1,970
Migration background 18.3% 440

Largest origin groups

Bars show each group’s share of all residents of 1831. For comparison, the line marks Municipality of Alkmaar and the circle the Netherlands.

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

4.4% 105 people

Municipality of Alkmaar 5.5% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

3.1% 75 people

Municipality of Alkmaar 4.8% Netherlands 5.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

2.1% 50 people

Municipality of Alkmaar 2.2% Netherlands 1.7%
Indonesia

1.9% 45 people

Municipality of Alkmaar 2.0% Netherlands 1.9%
Germany

1.9% 45 people

Municipality of Alkmaar 1.6% Netherlands 1.9%
Other Africa Africa excluding Morocco

1.5% 35 people

Municipality of Alkmaar 2.4% Netherlands 2.3%
Suriname

1.0% 25 people

Municipality of Alkmaar 1.4% Netherlands 2.0%
Turkey

0.62% 15 people

Municipality of Alkmaar 2.3% Netherlands 2.6%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.62% 15 people

Municipality of Alkmaar 1.2% Netherlands 1.1%
Poland

0.62% 15 people

Municipality of Alkmaar 0.72% Netherlands 1.4%
Morocco

0.41% 10 people

Municipality of Alkmaar 2.0% Netherlands 2.4%
Belgium

0.21% 5 people

Municipality of Alkmaar 0.35% Netherlands 0.76%

First and second generation

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

47% 53%

Born abroad (first generation) 46.6% 205
Born in the Netherlands (second generation) 53.4% 235

Men and women

Men: 1,205
Women: 1,205

Compared with all postcodes

Netherlands 29.1% 1831 18.3%

Higher than 51% 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

18.3%

1831
Municipality of Alkmaar
Netherlands

Show as table

Year	1831	Municipality of Alkmaar	Netherlands
1998	15.5%	18.0%	16.7%
1999	15.2%	18.4%	17.1%
2000	14.8%	18.6%	17.5%
2001	14.3%	19.1%	18.0%
2002	14.3%	19.5%	18.4%
2003	14.7%	19.7%	18.8%
2004	14.2%	20.1%	19.0%
2005	14.6%	20.1%	19.2%
2006	13.8%	20.1%	19.3%
2007	13.0%	19.9%	19.4%
2008	13.1%	20.2%	19.6%
2009	13.8%	20.4%	19.9%
2010	13.9%	20.7%	20.3%
2011	14.5%	20.9%	20.6%
2012	14.4%	21.0%	20.9%
2013	14.1%	21.1%	21.1%
2014	14.4%	21.2%	21.4%
2015	14.2%	21.3%	21.7%
2016	15.2%	21.6%	22.1%
2017	16.3%	22.1%	22.6%
2018	16.8%	22.2%	23.1%
2019	16.4%	22.3%	23.6%
2020	16.0%	22.6%	24.2%
2021	16.0%	22.9%	24.6%
2022	17.4%	24.2%	26.0%
2023	17.0%	25.1%	27.1%
2024	17.3%	25.6%	27.9%
2025	18.5%	26.0%	28.5%
2026	18.3%	26.4%	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
1827 Daalmeer/Koedijk	24.4%	10,240	+2.0 pp	Other Asia
1825 De Mare	29.7%	8,990	+2.0 pp	Other Europe
1721 Duizend Eilandenrijk Zuid, Mayersloot Zuid	15.1%	6,165	+1.2 pp	Other Europe
1862 Binnen	21.2%	6,125	+2.1 pp	Other Europe
1817 West	28.4%	4,415	+9.5 pp	Other Europe
1832 Koedijk (Dijk en Waard)	14.0%	250	+1.0 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	2,870	2,430	445	195	255	5	15	35	70	20	100	0	10	85	20	60	30	285	160
1999	2,835	2,405	430	175	250	10	15	30	70	10	90	0	10	75	15	70	30	275	155
2000	2,840	2,420	420	180	245	5	10	25	70	20	90	0	10	80	10	70	35	270	155
2001	2,910	2,495	415	170	240	5	10	30	75	15	85	5	10	70	10	60	35	265	145
2002	2,830	2,430	405	160	245	10	20	30	70	20	80	0	5	75	10	50	35	245	155
2003	2,750	2,345	405	155	245	15	15	25	65	15	85	5	5	60	15	55	40	240	165
2004	2,720	2,330	385	145	240	10	15	30	65	20	75	5	5	60	15	55	30	230	160
2005	2,700	2,315	395	145	245	10	15	25	65	20	75	5	5	60	15	55	40	230	160
2006	2,715	2,340	375	140	225	10	10	25	70	10	70	0	10	60	20	50	30	230	145
2007	2,685	2,330	350	140	215	10	10	25	65	10	65	5	5	65	15	50	30	225	130
2008	2,680	2,330	350	160	190	5	5	25	65	10	70	5	10	75	15	40	25	240	115
2009	2,650	2,285	365	165	210	5	5	20	65	20	70	5	5	85	20	45	30	245	120
2010	2,635	2,270	365	160	205	5	5	25	70	20	70	5	10	75	20	30	30	250	120
2011	2,620	2,240	380	170	210	5	0	25	65	20	75	5	10	80	25	40	30	255	125
2012	2,565	2,195	370	165	195	5	10	25	60	20	60	5	10	90	15	30	30	245	125
2013	2,545	2,180	360	165	200	10	5	20	60	20	60	10	5	90	20	35	30	240	120
2014	2,565	2,195	370	165	205	10	5	25	55	20	60	10	10	85	25	35	30	235	135
2015	2,565	2,200	365	165	205	5	5	25	50	15	65	10	10	80	30	50	25	225	140
2016	2,535	2,150	385	165	220	10	5	25	45	15	60	15	10	80	30	60	30	230	155
2017	2,570	2,150	420	185	230	15	10	20	50	15	60	25	10	90	20	60	40	255	160
2018	2,530	2,105	425	190	235	15	10	20	55	15	60	15	10	105	20	60	40	260	165
2019	2,500	2,090	410	185	225	10	10	25	50	10	55	20	15	95	25	60	35	255	160
2020	2,495	2,095	400	175	225	15	10	15	50	15	60	20	10	85	25	60	35	245	160
2021	2,440	2,050	390	170	220	15	10	15	50	15	50	20	10	90	20	55	40	240	150
2022	2,415	1,995	420	170	245	15	10	20	45	10	50	20	10	95	30	75	40	230	160
2023	2,405	1,990	410	165	245	15	5	20	45	15	45	15	0	100	40	65	45	230	150
2024	2,395	1,980	415	165	250	20	5	20	45	15	45	15	5	105	30	65	45	–	–
2025	2,430	1,985	450	180	270	15	5	25	45	15	45	20	5	110	40	70	50	–	–
2026	2,410	1,970	440	175	265	15	10	25	45	15	45	15	5	105	35	75	50	–	–

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