Postcode · Akersloot, North Holland

Postcode 1921: Neighbourhoods West and Oost

On 1 January 2026, postcode 1921 in Akersloot (West and Oost) had 5,340 residents. 13.0% of them (695 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than the municipality of Castricum (14.3%) and lower than the national average (29.1%). The largest origin groups are other Europe (3.0%), other Asia (3.0%) and other Africa (1.4%). 55.4% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 1.7 percentage points.

Residents: 5,340 on 1 January 2026
Migration background: 13.0% 695 people
Born abroad: 55.4% of those with a migration background
Change since 2022: +1.7 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

87%

Dutch origin 87.0% 4,645
Migration background 13.0% 695

Largest origin groups

Bars show each group’s share of all residents of 1921. For comparison, the line marks Municipality of Castricum and the circle the Netherlands.

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

3.0% 160 people

Municipality of Castricum 3.5% Netherlands 5.6%
Other Asia Asia excluding Indonesia and Turkey

3.0% 160 people

Municipality of Castricum 2.7% Netherlands 5.3%
Other Africa Africa excluding Morocco

1.4% 75 people

Municipality of Castricum 1.1% Netherlands 2.3%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.4% 75 people

Municipality of Castricum 1.6% Netherlands 1.7%
Germany

1.1% 60 people

Municipality of Castricum 1.4% Netherlands 1.9%
Indonesia

1.0% 55 people

Municipality of Castricum 1.8% Netherlands 1.9%
Suriname

0.47% 25 people

Municipality of Castricum 0.54% Netherlands 2.0%
Poland

0.47% 25 people

Municipality of Castricum 0.32% Netherlands 1.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.37% 20 people

Municipality of Castricum 0.40% Netherlands 1.1%
Turkey

0.28% 15 people

Municipality of Castricum 0.39% Netherlands 2.6%
Morocco

0.19% 10 people

Municipality of Castricum 0.18% Netherlands 2.4%
Belgium

0.19% 10 people

Municipality of Castricum 0.39% Netherlands 0.76%

First and second generation

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

55% 45%

Born abroad (first generation) 55.4% 385
Born in the Netherlands (second generation) 44.6% 310

Men and women

Men: 2,725
Women: 2,615

Compared with all postcodes

Netherlands 29.1% 1921 13.0%

Higher than 33% 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

13.0%

1921
Municipality of Castricum
Netherlands

Show as table

Year	1921	Municipality of Castricum	Netherlands
1998	5.7%	8.0%	16.7%
1999	6.1%	8.3%	17.1%
2000	6.5%	8.4%	17.5%
2001	7.1%	8.6%	18.0%
2002	7.3%	8.8%	18.4%
2003	7.4%	8.8%	18.8%
2004	7.7%	9.0%	19.0%
2005	7.9%	9.0%	19.2%
2006	7.9%	9.2%	19.3%
2007	7.2%	9.2%	19.4%
2008	7.6%	9.4%	19.6%
2009	8.0%	9.6%	19.9%
2010	8.0%	9.7%	20.3%
2011	7.9%	9.8%	20.6%
2012	8.1%	9.9%	20.9%
2013	8.3%	10.1%	21.1%
2014	8.3%	10.2%	21.4%
2015	8.2%	10.4%	21.7%
2016	8.5%	10.6%	22.1%
2017	9.0%	11.0%	22.6%
2018	9.3%	11.1%	23.1%
2019	9.6%	11.4%	23.6%
2020	10.0%	11.7%	24.2%
2021	10.5%	11.8%	24.6%
2022	11.4%	13.2%	26.0%
2023	11.9%	13.6%	27.1%
2024	11.9%	13.5%	27.9%
2025	12.6%	14.0%	28.5%
2026	13.0%	14.3%	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
1911 Oude Dorp, De Koog	15.8%	13,490	+1.7 pp	Other Asia
1851 Midden, Ypestein	15.0%	12,760	+1.4 pp	Other Europe
1906 West, Centrum	10.7%	7,790	+0.9 pp	Other Europe
1846 Schermer	6.3%	395	+1.2 pp	Dutch Caribbean
1847 Schermer	9.3%	270	−2.3 pp	Indonesia
1812 Overdie	14.0%	215	+0.3 pp	Suriname
1489 de Woude	12.5%	160	+0.4 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	4,710	4,435	270	140	130	0	0	10	55	10	60	5	10	65	30	10	15	210	65
1999	4,720	4,435	290	150	135	0	0	10	50	5	60	5	10	75	30	15	25	220	65
2000	4,775	4,460	310	150	160	5	0	10	50	10	60	5	5	80	40	20	25	230	75
2001	4,885	4,535	345	180	165	0	0	15	60	15	65	10	10	95	40	15	20	260	85
2002	5,020	4,655	365	180	180	5	5	15	55	10	65	10	10	95	35	25	30	265	95
2003	5,055	4,675	375	180	195	5	0	10	55	10	65	10	10	95	40	30	45	275	105
2004	5,075	4,690	390	200	190	5	5	15	55	15	65	15	10	110	25	30	40	290	100
2005	5,075	4,680	400	205	195	0	5	15	55	10	65	10	10	120	30	30	50	290	110
2006	5,070	4,660	400	205	200	5	0	10	55	10	65	15	10	115	40	30	50	295	105
2007	4,980	4,620	360	190	170	0	0	10	50	10	55	5	10	120	30	30	40	270	85
2008	4,955	4,575	375	195	175	5	5	10	55	5	60	10	10	115	25	30	40	280	90
2009	4,935	4,545	395	205	190	5	5	10	50	10	65	15	15	110	40	35	35	290	105
2010	4,930	4,535	395	200	195	5	5	5	50	10	65	15	10	110	40	40	40	285	110
2011	4,870	4,490	385	190	200	5	5	10	50	10	55	15	10	110	35	45	40	275	110
2012	4,880	4,480	395	190	205	5	5	10	50	10	60	15	10	105	35	50	40	275	115
2013	4,890	4,485	405	205	205	0	5	5	50	10	65	15	10	115	35	55	45	275	125
2014	4,855	4,450	405	205	200	0	5	10	50	10	65	5	5	130	40	50	35	280	125
2015	4,910	4,505	405	205	200	5	5	10	50	10	65	10	10	120	40	45	35	285	125
2016	4,890	4,475	415	205	205	5	5	10	50	5	60	15	10	120	40	50	40	285	125
2017	4,955	4,510	445	225	220	5	5	15	45	5	55	20	15	135	45	65	35	295	150
2018	4,990	4,525	465	220	245	5	10	10	50	10	55	20	10	135	40	70	50	300	165
2019	5,015	4,535	480	225	255	5	10	10	50	10	60	20	10	135	45	70	55	305	170
2020	5,075	4,570	505	230	275	5	10	20	45	10	60	25	10	135	50	85	50	305	195
2021	5,010	4,485	525	240	280	5	15	15	50	10	60	25	10	145	50	85	50	315	205
2022	5,065	4,485	575	245	330	15	10	20	55	15	65	25	10	145	60	95	65	330	215
2023	5,080	4,475	605	265	345	15	10	20	60	25	65	30	10	165	55	100	60	345	225
2024	5,085	4,480	605	250	355	15	10	15	65	25	60	25	10	155	60	100	65	–	–
2025	5,140	4,490	650	255	400	20	10	20	60	15	65	25	10	155	65	140	75	–	–
2026	5,340	4,645	695	255	440	15	10	25	55	20	60	25	10	160	75	160	75	–	–

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