Postcode · Alkmaar, North Holland

Postcode 1813: Neighbourhood Overdie

On 1 January 2026, postcode 1813 in Alkmaar (Overdie) had 8,920 residents. 45.7% of them (4,080 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Alkmaar (29.1%) and higher than the national average (29.1%). The largest origin groups are Turkey (10.4%), other Asia (8.5%) and Morocco (7.9%). 57.0% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 1.6 percentage points.

Residents: 8,920 on 1 January 2026
Migration background: 45.7% 4,080 people
Born abroad: 57.0% of those with a migration background
Change since 2022: +1.6 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

54% 46%

Dutch origin 54.3% 4,840
Migration background 45.7% 4,080

Largest origin groups

Bars show each group’s share of all residents of 1813. For comparison, the line marks Alkmaar and the circle the Netherlands.

Turkey

10.4% 930 people

Alkmaar 2.7% Netherlands 2.6%
Other Asia Asia excluding Indonesia and Turkey

8.5% 755 people

Alkmaar 5.4% Netherlands 5.3%
Morocco

7.9% 705 people

Alkmaar 2.3% Netherlands 2.4%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

5.1% 455 people

Alkmaar 6.0% Netherlands 5.6%
Other Africa Africa excluding Morocco

4.3% 385 people

Alkmaar 2.6% Netherlands 2.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

2.1% 190 people

Alkmaar 2.4% Netherlands 1.7%
Suriname

1.8% 165 people

Alkmaar 1.6% Netherlands 2.0%
Indonesia

1.8% 160 people

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

1.3% 120 people

Alkmaar 1.3% Netherlands 1.1%
Germany

1.3% 115 people

Alkmaar 1.7% Netherlands 1.9%
Poland

0.84% 75 people

Alkmaar 0.78% Netherlands 1.4%
Belgium

0.22% 20 people

Alkmaar 0.37% Netherlands 0.76%

First and second generation

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

57% 43%

Born abroad (first generation) 57.0% 2,325
Born in the Netherlands (second generation) 43.0% 1,755

Men and women

Men: 4,390
Women: 4,530

Compared with all postcodes

Netherlands 29.1% 1813 45.7%

Higher than 90% 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

45.7%

1813
Alkmaar
Netherlands

Show as table

Year	1813	Alkmaar	Netherlands
1998	36.1%	20.1%	16.7%
1999	37.1%	20.5%	17.1%
2000	38.3%	20.8%	17.5%
2001	39.1%	21.4%	18.0%
2002	40.8%	21.8%	18.4%
2003	42.6%	22.1%	18.8%
2004	44.1%	22.5%	19.0%
2005	44.4%	22.5%	19.2%
2006	44.6%	22.5%	19.3%
2007	45.3%	22.4%	19.4%
2008	45.4%	22.6%	19.6%
2009	44.8%	22.8%	19.9%
2010	45.4%	23.1%	20.3%
2011	45.4%	23.3%	20.6%
2012	44.8%	23.4%	20.9%
2013	44.0%	23.5%	21.1%
2014	42.8%	23.5%	21.4%
2015	42.5%	23.6%	21.7%
2016	42.3%	23.9%	22.1%
2017	43.3%	24.4%	22.6%
2018	43.5%	24.6%	23.1%
2019	43.6%	24.6%	23.6%
2020	44.0%	25.0%	24.2%
2021	43.4%	25.3%	24.6%
2022	44.1%	26.7%	26.0%
2023	44.5%	27.6%	27.1%
2024	45.3%	28.2%	27.9%
2025	45.5%	28.6%	28.5%
2026	45.7%	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
1811 Centrum	27.1%	5,435	+3.3 pp	Other Europe
1821 Oudorp	21.4%	2,075	+1.3 pp	Other Europe
1812 Overdie	14.0%	215	+0.3 pp	Suriname

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	7,610	4,860	2,750	485	2,260	1,170	425	145	195	75	125	15	20	325	105	90	55	690	2,060
1999	7,615	4,795	2,825	495	2,325	1,190	445	140	185	80	130	20	20	325	130	100	55	690	2,130
2000	7,455	4,600	2,855	470	2,395	1,205	450	120	185	75	125	15	20	310	125	160	75	675	2,185
2001	7,665	4,670	3,000	505	2,495	1,240	440	130	180	90	125	15	20	345	135	210	70	695	2,295
2002	7,745	4,585	3,160	525	2,635	1,290	455	135	175	95	125	20	30	350	160	255	70	710	2,445
2003	7,840	4,500	3,340	555	2,800	1,325	515	125	170	105	120	20	25	390	175	295	90	735	2,605
2004	7,900	4,420	3,480	560	2,910	1,320	530	130	170	110	120	25	25	390	210	340	100	750	2,730
2005	7,795	4,335	3,460	550	2,915	1,325	565	115	165	120	115	20	20	395	185	330	110	735	2,725
2006	7,605	4,215	3,395	545	2,840	1,220	575	120	175	125	105	15	20	405	180	345	100	740	2,655
2007	7,475	4,090	3,385	545	2,840	1,195	590	125	175	105	100	25	15	405	190	350	110	740	2,645
2008	7,250	3,955	3,290	535	2,750	1,145	585	115	160	100	95	30	15	395	190	350	105	710	2,580
2009	7,230	3,990	3,240	520	2,730	1,120	590	115	150	105	95	25	15	385	195	355	100	675	2,570
2010	7,270	3,975	3,300	555	2,735	1,125	595	115	150	100	95	30	20	410	200	350	100	710	2,590
2011	7,245	3,950	3,290	540	2,755	1,105	610	120	150	115	100	35	20	385	190	360	105	700	2,595
2012	7,330	4,040	3,285	540	2,740	1,115	610	115	140	90	100	45	15	380	205	350	115	690	2,595
2013	7,550	4,230	3,320	535	2,785	1,100	615	110	150	100	105	45	20	365	230	355	125	695	2,625
2014	7,830	4,475	3,355	575	2,785	1,110	610	120	150	95	115	45	20	395	235	340	125	745	2,615
2015	8,090	4,650	3,440	575	2,865	1,115	640	120	155	105	120	50	20	385	250	355	125	745	2,700
2016	8,255	4,765	3,490	565	2,925	1,085	665	125	155	115	125	50	15	375	275	385	120	735	2,755
2017	8,300	4,705	3,595	570	3,025	1,105	685	120	150	110	120	65	10	375	275	460	120	735	2,865
2018	8,485	4,795	3,690	580	3,115	1,100	690	125	145	105	120	55	15	390	310	520	120	745	2,945
2019	8,645	4,880	3,765	595	3,165	1,075	715	130	150	105	120	60	15	400	340	520	130	760	3,000
2020	8,625	4,830	3,795	610	3,185	1,060	725	135	155	110	115	50	15	430	330	535	135	775	3,020
2021	8,770	4,965	3,805	610	3,195	1,045	730	140	155	100	115	45	15	435	350	535	140	790	3,020
2022	8,870	4,960	3,915	605	3,310	1,020	730	140	165	100	115	60	15	410	350	640	165	815	3,045
2023	8,855	4,915	3,940	645	3,290	975	725	140	165	125	110	55	20	465	350	645	170	860	3,025
2024	9,025	4,935	4,090	705	3,385	970	735	145	160	125	120	65	15	510	380	680	190	–	–
2025	9,055	4,935	4,120	700	3,420	960	715	145	155	120	120	70	20	490	385	745	195	–	–
2026	8,920	4,840	4,080	665	3,420	930	705	165	160	120	115	75	20	455	385	755	190	–	–

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