Postcode · Alkmaar, North Holland

Postcode 1812: Neighbourhood Overdie

On 1 January 2026, postcode 1812 in Alkmaar (Overdie) had 215 residents. 14.0% of them (30 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than Alkmaar (29.1%) and lower than the national average (29.1%). The largest origin groups are Suriname (2.3%), Indonesia (2.3%) and Dutch Caribbean (2.3%). 50.0% of residents with a migration background were born abroad themselves. Since 2022 the share has hardly changed.

Residents: 215 on 1 January 2026
Migration background: 14.0% 30 people
Born abroad: 50.0% of those with a migration background
Change since 2022: +0.3 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

88%

Dutch origin 88.4% 190
Migration background 14.0% 30

Largest origin groups

Bars show each group’s share of all residents of 1812. For comparison, the line marks Alkmaar and the circle the Netherlands.

Suriname

2.3% 5 people

Alkmaar 1.6% Netherlands 2.0%
Indonesia

2.3% 5 people

Alkmaar 2.1% Netherlands 1.9%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

2.3% 5 people

Alkmaar 1.3% Netherlands 1.1%
Poland

2.3% 5 people

Alkmaar 0.78% Netherlands 1.4%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

2.3% 5 people

Alkmaar 6.0% Netherlands 5.6%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

2.3% 5 people

Alkmaar 2.4% Netherlands 1.7%
Turkey

0.0% 0 people

Alkmaar 2.7% Netherlands 2.6%
Morocco

0.0% 0 people

Alkmaar 2.3% Netherlands 2.4%
Germany

0.0% 0 people

Alkmaar 1.7% Netherlands 1.9%
Belgium

0.0% 0 people

Alkmaar 0.37% Netherlands 0.76%
Other Africa Africa excluding Morocco

0.0% 0 people

Alkmaar 2.6% Netherlands 2.3%
Other Asia Asia excluding Indonesia and Turkey

0.0% 0 people

Alkmaar 5.4% Netherlands 5.3%

First and second generation

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

50% 33%

Born abroad (first generation) 50.0% 15
Born in the Netherlands (second generation) 33.3% 10

Men and women

Men: 120
Women: 95

Compared with all postcodes

Not ranked: fewer than 500 residents.

Trend since 1998

Share of residents with a migration background, compared with larger areas.

Show

Measure % Residents

New CBS classification

14.0%

1812
Alkmaar
Netherlands

Show as table

Year	1812	Alkmaar	Netherlands
1998	4.9%	20.1%	16.7%
1999	6.3%	20.5%	17.1%
2000	6.1%	20.8%	17.5%
2001	6.5%	21.4%	18.0%
2002	5.1%	21.8%	18.4%
2003	5.2%	22.1%	18.8%
2004	6.8%	22.5%	19.0%
2005	7.0%	22.5%	19.2%
2006	8.9%	22.5%	19.3%
2007	7.3%	22.4%	19.4%
2008	8.8%	22.6%	19.6%
2009	7.3%	22.8%	19.9%
2010	5.6%	23.1%	20.3%
2011	7.8%	23.3%	20.6%
2012	8.7%	23.4%	20.9%
2013	8.9%	23.5%	21.1%
2014	8.5%	23.5%	21.4%
2015	6.7%	23.6%	21.7%
2016	10.4%	23.9%	22.1%
2017	8.9%	24.4%	22.6%
2018	8.9%	24.6%	23.1%
2019	10.9%	24.6%	23.6%
2020	9.3%	25.0%	24.2%
2021	9.5%	25.3%	24.6%
2022	13.6%	26.7%	26.0%
2023	25.5%	27.6%	27.1%
2024	13.6%	28.2%	27.9%
2025	13.6%	28.6%	28.5%
2026	14.0%	29.1%	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
1851 Midden, Ypestein	15.0%	12,760	+1.4 pp	Other Europe
1703 Edelstenenwijk, Rivierenwijk	28.0%	12,625	+2.4 pp	Other Asia
1814 Zuid	25.8%	9,720	+1.8 pp	Turkey
1813 Overdie	45.7%	8,920	+1.6 pp	Turkey
1921 West, Oost	13.0%	5,340	+1.7 pp	Other Europe
1829 Centrum, Noord en Oudorp-Oost	17.5%	4,025	+2.2 pp	Other Europe
1841 Schermer	12.2%	2,090	+0.9 pp	Other Europe
1821 Oudorp	21.4%	2,075	+1.3 pp	Other Europe
1847 Schermer	9.3%	270	−2.3 pp	Indonesia

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	Morocco	Suriname	Indonesia	Dutch Caribbean	Germany	Poland	Other Europe	Other Asia	Other Americas & Oceania	Western migration background	Non-Western migration background
1998	205	195	10	10	0	0	0	0	0	10	0	0	0	0	15	0
1999	315	300	20	10	10	5	0	5	0	5	5	0	5	0	15	5
2000	330	310	20	10	5	5	0	5	0	10	0	0	0	0	15	5
2001	310	290	20	10	10	0	0	5	0	10	5	0	5	0	15	5
2002	295	280	15	5	5	0	0	0	0	5	0	0	5	0	10	0
2003	290	275	15	10	0	0	0	0	0	10	0	0	0	0	15	0
2004	295	275	20	15	10	0	0	5	0	5	0	10	0	5	15	0
2005	285	265	20	10	10	0	5	5	0	5	0	5	5	0	15	5
2006	280	260	25	10	15	0	0	10	0	5	0	5	0	5	15	5
2007	275	255	20	10	10	0	5	10	0	5	0	5	0	0	15	0
2008	285	260	25	10	10	0	5	5	0	10	0	0	0	0	20	0
2009	275	250	20	10	10	0	5	5	5	5	0	5	0	0	15	5
2010	270	250	15	10	10	0	5	5	0	5	0	5	0	0	15	5
2011	255	235	20	10	15	0	5	5	5	0	0	10	0	0	10	10
2012	230	215	20	5	10	0	5	10	0	0	0	5	0	0	15	5
2013	225	205	20	5	5	0	5	5	0	5	0	0	0	0	15	0
2014	235	215	20	10	10	0	5	5	0	5	0	5	0	0	15	10
2015	225	210	15	5	10	0	0	5	0	0	0	5	0	5	10	5
2016	240	215	25	10	15	0	5	5	0	0	5	5	0	5	15	5
2017	225	205	20	10	10	0	5	5	0	5	0	5	0	0	15	5
2018	225	205	20	10	15	0	5	5	0	5	0	5	0	5	15	5
2019	230	205	25	10	15	0	5	5	0	5	0	5	0	5	15	5
2020	215	195	20	10	15	5	5	5	0	0	5	5	0	5	15	10
2021	210	190	20	5	15	0	5	0	0	5	0	0	5	5	10	5
2022	220	190	30	10	20	0	5	5	5	5	5	5	0	5	20	10
2023	255	185	65	45	15	0	5	5	0	5	5	40	5	5	55	10
2024	220	190	30	10	20	0	5	5	5	0	5	5	0	5	–	–
2025	220	190	30	10	15	0	5	5	5	0	5	5	0	5	–	–
2026	215	190	30	10	20	0	5	5	5	0	5	5	0	5	–	–

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