Postcode · Maassluis, South Holland

Postcode 3141: Neighbourhood Sluispolder

On 1 January 2026, postcode 3141 in Maassluis (Sluispolder) had 6,480 residents. 38.7% of them (2,505 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Maassluis (33.2%) and higher than the national average (29.1%). The largest origin groups are Turkey (7.5%), other Asia (6.4%) and Morocco (4.6%). 53.9% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 2.0 percentage points.

Residents: 6,480 on 1 January 2026
Migration background: 38.7% 2,505 people
Born abroad: 53.9% of those with a migration background
Change since 2022: +2.0 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

61% 39%

Dutch origin 61.3% 3,975
Migration background 38.7% 2,505

Largest origin groups

Bars show each group’s share of all residents of 3141. For comparison, the line marks Maassluis and the circle the Netherlands.

Turkey

7.5% 485 people

Maassluis 6.2% Netherlands 2.6%
Other Asia Asia excluding Indonesia and Turkey

6.4% 415 people

Maassluis 5.0% Netherlands 5.3%
Morocco

4.6% 300 people

Maassluis 4.6% Netherlands 2.4%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

4.2% 270 people

Maassluis 3.8% Netherlands 5.6%
Poland

3.9% 250 people

Maassluis 2.6% Netherlands 1.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

3.2% 205 people

Maassluis 2.3% Netherlands 1.1%
Other Africa Africa excluding Morocco

2.5% 165 people

Maassluis 1.8% Netherlands 2.3%
Suriname

2.2% 145 people

Maassluis 2.2% Netherlands 2.0%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.4% 90 people

Maassluis 1.2% Netherlands 1.7%
Indonesia

1.3% 85 people

Maassluis 1.6% Netherlands 1.9%
Germany

1.1% 70 people

Maassluis 1.2% Netherlands 1.9%
Belgium

0.31% 20 people

Maassluis 0.46% Netherlands 0.76%

First and second generation

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

54% 46%

Born abroad (first generation) 53.9% 1,350
Born in the Netherlands (second generation) 46.1% 1,155

Men and women

Men: 3,190
Women: 3,290

Compared with all postcodes

Netherlands 29.1% 3141 38.7%

Higher than 85% 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

38.7%

3141
Maassluis
Netherlands

Show as table

Year	3141	Maassluis	Netherlands
1998	20.6%	19.8%	16.7%
1999	21.0%	20.3%	17.1%
2000	21.7%	20.8%	17.5%
2001	22.5%	21.4%	18.0%
2002	22.8%	21.8%	18.4%
2003	23.7%	22.1%	18.8%
2004	24.4%	22.4%	19.0%
2005	25.5%	22.7%	19.2%
2006	26.0%	22.8%	19.3%
2007	26.5%	23.0%	19.4%
2008	26.0%	23.0%	19.6%
2009	27.2%	23.3%	19.9%
2010	28.1%	23.7%	20.3%
2011	29.2%	24.3%	20.6%
2012	29.7%	24.6%	20.9%
2013	30.9%	25.0%	21.1%
2014	31.7%	25.6%	21.4%
2015	32.7%	26.1%	21.7%
2016	32.2%	26.3%	22.1%
2017	33.2%	26.9%	22.6%
2018	33.5%	27.3%	23.1%
2019	34.2%	27.8%	23.6%
2020	34.9%	28.6%	24.2%
2021	35.4%	29.0%	24.6%
2022	36.7%	30.1%	26.0%
2023	37.8%	31.3%	27.1%
2024	37.8%	31.8%	27.9%
2025	38.4%	32.5%	28.5%
2026	38.7%	33.2%	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
3132 Westwijk	54.1%	12,800	+4.5 pp	Turkey
3155 Maasland	15.1%	6,700	+2.6 pp	Other Europe
3142 Dijkpolder	39.1%	5,970	+7.9 pp	Other Asia
3143 Taanschuurpolder	28.6%	3,340	+0.9 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	6,545	5,195	1,350	295	1,065	485	155	70	115	65	100	15	20	160	60	85	30	420	930
1999	6,750	5,330	1,420	300	1,120	495	180	80	115	75	105	15	25	155	55	90	30	440	985
2000	6,945	5,435	1,510	315	1,195	500	200	85	115	105	110	5	25	175	60	95	35	455	1,055
2001	7,015	5,435	1,580	330	1,250	515	215	80	130	115	105	10	25	190	65	90	40	480	1,095
2002	7,040	5,430	1,605	335	1,275	515	200	85	120	135	110	10	25	190	65	105	50	480	1,125
2003	6,995	5,335	1,660	330	1,330	530	210	80	130	150	105	15	25	185	65	120	45	480	1,180
2004	6,970	5,270	1,700	345	1,350	545	205	80	125	150	115	10	30	190	70	125	50	490	1,210
2005	6,875	5,125	1,750	350	1,400	570	205	80	135	170	110	15	30	195	60	130	50	505	1,245
2006	6,845	5,065	1,780	350	1,440	580	220	95	125	165	105	10	30	205	50	150	55	490	1,285
2007	6,805	5,010	1,800	360	1,445	585	230	95	125	160	105	15	30	210	60	145	45	505	1,295
2008	6,680	4,935	1,740	340	1,405	575	225	100	120	155	100	20	30	190	65	130	35	475	1,270
2009	6,675	4,870	1,815	345	1,460	565	250	105	115	175	95	20	30	200	60	145	45	485	1,330
2010	6,640	4,770	1,865	345	1,530	580	250	115	110	200	100	25	30	190	75	150	50	465	1,395
2011	6,650	4,705	1,945	355	1,590	590	260	120	100	235	95	40	30	190	85	150	50	475	1,475
2012	6,645	4,670	1,975	385	1,585	590	265	130	105	235	90	45	20	230	80	130	50	500	1,470
2013	6,620	4,575	2,045	405	1,635	585	295	140	95	240	90	70	25	220	95	140	45	515	1,530
2014	6,545	4,470	2,075	430	1,645	590	295	125	105	230	85	110	25	210	110	130	60	550	1,525
2015	6,495	4,370	2,125	460	1,660	595	300	130	105	215	80	145	20	215	125	140	50	585	1,540
2016	6,360	4,315	2,045	440	1,605	565	275	140	100	195	75	135	20	210	115	165	50	560	1,480
2017	6,340	4,235	2,105	460	1,645	565	255	130	105	170	65	165	20	210	140	225	55	575	1,525
2018	6,255	4,160	2,095	500	1,590	535	255	110	100	140	65	210	20	205	140	250	60	620	1,475
2019	6,210	4,085	2,125	520	1,610	525	255	110	100	160	65	220	20	215	140	265	55	630	1,500
2020	6,300	4,100	2,200	565	1,635	520	260	115	100	165	60	255	20	230	145	265	65	685	1,510
2021	6,210	4,010	2,200	575	1,625	525	275	115	85	160	55	270	20	230	150	260	55	680	1,520
2022	6,190	3,920	2,270	590	1,680	515	265	120	80	165	65	255	15	255	150	310	75	695	1,540
2023	6,170	3,840	2,335	675	1,660	495	255	120	80	165	65	250	20	345	150	315	70	780	1,515
2024	6,185	3,850	2,335	600	1,735	500	285	135	75	180	65	260	15	260	155	330	70	–	–
2025	6,250	3,850	2,400	595	1,805	510	290	140	75	190	65	260	15	255	155	375	75	–	–
2026	6,480	3,975	2,505	610	1,895	485	300	145	85	205	70	250	20	270	165	415	90	–	–

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