Postcode · Alkmaar, North Holland

Postcode 1811: Neighbourhood Centrum

On 1 January 2026, postcode 1811 in Alkmaar (Centrum) had 5,435 residents. 27.1% of them (1,475 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 other Europe (9.3%), other Asia (3.7%) and other Americas & Oceania (3.4%). 64.1% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 3.3 percentage points.

Residents: 5,435 on 1 January 2026
Migration background: 27.1% 1,475 people
Born abroad: 64.1% of those with a migration background
Change since 2022: +3.3 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

73% 27%

Dutch origin 72.9% 3,960
Migration background 27.1% 1,475

Largest origin groups

Bars show each group’s share of all residents of 1811. For comparison, the line marks Alkmaar and the circle the Netherlands.

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

9.3% 505 people

Alkmaar 6.0% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

3.7% 200 people

Alkmaar 5.4% Netherlands 5.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

3.4% 185 people

Alkmaar 2.4% Netherlands 1.7%
Indonesia

2.2% 120 people

Alkmaar 2.1% Netherlands 1.9%
Other Africa Africa excluding Morocco

2.0% 110 people

Alkmaar 2.6% Netherlands 2.3%
Germany

1.7% 95 people

Alkmaar 1.7% Netherlands 1.9%
Suriname

1.4% 75 people

Alkmaar 1.6% Netherlands 2.0%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.92% 50 people

Alkmaar 1.3% Netherlands 1.1%
Poland

0.83% 45 people

Alkmaar 0.78% Netherlands 1.4%
Turkey

0.64% 35 people

Alkmaar 2.7% Netherlands 2.6%
Morocco

0.64% 35 people

Alkmaar 2.3% Netherlands 2.4%
Belgium

0.46% 25 people

Alkmaar 0.37% Netherlands 0.76%

First and second generation

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

64% 36%

Born abroad (first generation) 64.1% 945
Born in the Netherlands (second generation) 36.3% 535

Men and women

Men: 2,780
Women: 2,655

Compared with all postcodes

Netherlands 29.1% 1811 27.1%

Higher than 71% 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

27.1%

1811
Alkmaar
Netherlands

Show as table

Year	1811	Alkmaar	Netherlands
1998	12.8%	20.1%	16.7%
1999	13.2%	20.5%	17.1%
2000	13.5%	20.8%	17.5%
2001	13.9%	21.4%	18.0%
2002	13.7%	21.8%	18.4%
2003	15.1%	22.1%	18.8%
2004	15.4%	22.5%	19.0%
2005	15.0%	22.5%	19.2%
2006	15.5%	22.5%	19.3%
2007	15.6%	22.4%	19.4%
2008	16.4%	22.6%	19.6%
2009	16.8%	22.8%	19.9%
2010	17.6%	23.1%	20.3%
2011	17.5%	23.3%	20.6%
2012	17.3%	23.4%	20.9%
2013	17.6%	23.5%	21.1%
2014	18.8%	23.5%	21.4%
2015	18.6%	23.6%	21.7%
2016	19.4%	23.9%	22.1%
2017	19.3%	24.4%	22.6%
2018	20.2%	24.6%	23.1%
2019	20.2%	24.6%	23.6%
2020	21.9%	25.0%	24.2%
2021	22.5%	25.3%	24.6%
2022	23.8%	26.7%	26.0%
2023	25.3%	27.6%	27.1%
2024	26.5%	28.2%	27.9%
2025	26.8%	28.6%	28.5%
2026	27.1%	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
1814 Zuid	25.8%	9,720	+1.8 pp	Turkey
1813 Overdie	45.7%	8,920	+1.6 pp	Turkey
1823 Oudorp	29.1%	7,535	+1.8 pp	Other Asia
1815 Zuid, Centrum	21.2%	7,400	+3.3 pp	Other Europe
1821 Oudorp	21.4%	2,075	+1.3 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	4,065	3,540	520	245	280	15	15	20	120	15	85	5	15	140	20	40	35	380	145
1999	4,030	3,500	530	240	290	10	10	25	135	20	85	5	10	140	25	25	40	390	145
2000	4,050	3,505	545	245	300	15	15	25	140	15	90	5	15	135	30	25	35	400	145
2001	4,020	3,460	560	245	310	15	10	25	145	15	90	5	15	135	35	25	40	415	150
2002	4,055	3,500	555	270	285	10	10	25	130	15	90	5	10	165	20	30	45	415	140
2003	4,085	3,475	615	280	330	15	15	25	135	15	90	15	10	165	25	40	60	440	175
2004	4,125	3,490	635	295	340	15	15	30	125	20	90	10	15	180	25	50	60	450	185
2005	4,125	3,505	620	280	335	15	15	30	120	20	90	5	15	170	20	45	70	430	195
2006	4,190	3,540	650	310	340	20	15	40	125	15	95	10	15	190	20	35	70	460	195
2007	4,315	3,645	675	325	355	15	15	45	125	15	100	10	10	205	20	40	80	490	190
2008	4,390	3,670	720	360	355	15	15	45	130	10	90	15	10	245	25	40	75	520	200
2009	4,370	3,635	735	375	350	15	15	40	130	15	90	20	10	255	25	40	70	540	190
2010	4,460	3,680	785	395	395	15	20	40	135	15	95	15	10	275	30	45	95	575	210
2011	4,485	3,695	785	400	385	20	20	40	130	20	100	10	15	275	15	55	85	565	220
2012	4,510	3,725	780	395	385	15	20	45	115	25	100	5	15	275	25	70	70	550	235
2013	4,535	3,735	800	385	410	20	20	45	115	35	95	15	15	260	30	70	75	535	255
2014	4,685	3,805	880	445	435	25	20	50	120	40	90	20	10	325	35	65	80	600	280
2015	4,730	3,850	880	450	435	25	15	45	125	40	100	10	15	325	50	65	70	610	275
2016	4,830	3,895	935	465	470	25	15	50	130	35	105	15	15	330	55	80	80	635	305
2017	4,940	3,985	955	450	500	25	20	50	135	40	105	15	15	315	55	80	95	625	330
2018	4,950	3,950	1,000	475	525	35	25	45	130	35	105	20	10	340	55	100	100	655	345
2019	5,040	4,020	1,020	475	545	25	25	45	130	40	100	20	10	345	55	105	120	670	350
2020	5,190	4,055	1,135	530	605	25	20	50	130	40	105	25	10	390	75	135	130	730	405
2021	5,310	4,115	1,195	565	625	30	30	60	130	45	105	30	10	420	65	130	135	750	445
2022	5,355	4,080	1,275	565	705	35	25	65	130	55	105	35	15	415	90	155	150	740	475
2023	5,440	4,060	1,375	630	750	30	30	70	120	55	95	40	15	475	105	185	150	795	525
2024	5,460	4,015	1,445	645	800	40	35	80	115	55	95	40	15	495	110	200	165	–	–
2025	5,425	3,970	1,455	655	805	35	40	80	125	55	100	45	20	485	95	210	170	–	–
2026	5,435	3,960	1,475	670	805	35	35	75	120	50	95	45	25	505	110	200	185	–	–

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