Postcode · Maarssen, Utrecht

Postcode 3605: Neighbourhood Maarssenbroek

On 1 January 2026, postcode 3605 in Maarssen (Maarssenbroek) had 5,745 residents. 37.8% of them (2,170 people) have a migration background: they were born abroad or have at least one parent who was. That is higher than Maarssen (27.0%) and higher than the national average (29.1%). The largest origin groups are other Asia (9.5%), other Europe (5.9%) and Morocco (5.0%). 58.1% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 1.5 percentage points.

Residents: 5,745 on 1 January 2026
Migration background: 37.8% 2,170 people
Born abroad: 58.1% of those with a migration background
Change since 2022: +1.5 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

62% 38%

Dutch origin 62.2% 3,575
Migration background 37.8% 2,170

Largest origin groups

Bars show each group’s share of all residents of 3605. For comparison, the line marks Maarssen and the circle the Netherlands.

Other Asia Asia excluding Indonesia and Turkey

9.5% 545 people

Maarssen 6.0% Netherlands 5.3%
Other Europe Europe excluding the Netherlands, Belgium, Germany and Poland

5.9% 340 people

Maarssen 5.0% Netherlands 5.6%
Morocco

5.0% 285 people

Maarssen 2.8% Netherlands 2.4%
Suriname

4.9% 280 people

Maarssen 2.4% Netherlands 2.0%
Turkey

2.6% 150 people

Maarssen 1.5% Netherlands 2.6%
Indonesia

2.1% 120 people

Maarssen 2.3% Netherlands 1.9%
Other Africa Africa excluding Morocco

2.1% 120 people

Maarssen 1.8% Netherlands 2.3%
Germany

1.5% 85 people

Maarssen 1.5% Netherlands 1.9%
Other Americas & Oceania Americas and Oceania excluding Suriname and the Dutch Caribbean

1.4% 80 people

Maarssen 1.5% Netherlands 1.7%
Poland

1.2% 70 people

Maarssen 0.69% Netherlands 1.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

1.1% 65 people

Maarssen 0.83% Netherlands 1.1%
Belgium

0.52% 30 people

Maarssen 0.48% Netherlands 0.76%

First and second generation

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

58% 42%

Born abroad (first generation) 58.1% 1,260
Born in the Netherlands (second generation) 41.9% 910

Men and women

Men: 2,805
Women: 2,945

Compared with all postcodes

Netherlands 29.1% 3605 37.8%

Higher than 84% 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

37.8%

3605
Maarssen
Netherlands

Show as table

Year	3605	Maarssen	Netherlands
1998	28.9%	16.3%	16.7%
1999	29.1%	16.7%	17.1%
2000	29.6%	16.8%	17.5%
2001	30.1%	17.1%	18.0%
2002	30.4%	17.2%	18.4%
2003	30.8%	17.4%	18.8%
2004	31.1%	17.8%	19.0%
2005	30.5%	17.8%	19.2%
2006	30.0%	17.9%	19.3%
2007	29.9%	18.1%	19.4%
2008	29.9%	18.2%	19.6%
2009	30.2%	18.5%	19.9%
2010	29.9%	18.5%	20.3%
2011	30.0%	18.7%	20.6%
2012	30.4%	18.7%	20.9%
2013	30.9%	19.2%	21.1%
2014	30.5%	19.3%	21.4%
2015	31.5%	19.5%	21.7%
2016	30.9%	19.7%	22.1%
2017	31.9%	20.0%	22.6%
2018	32.2%	20.3%	23.1%
2019	32.5%	20.7%	23.6%
2020	33.4%	21.4%	24.2%
2021	34.8%	21.9%	24.6%
2022	36.3%	23.4%	26.0%
2023	36.9%	24.8%	27.1%
2024	37.5%	25.8%	27.9%
2025	37.8%	26.4%	28.5%
2026	37.8%	27.0%	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
3607 Maarssenbroek	28.0%	13,610	+2.8 pp	Other Asia
3621 Midden, Noord	22.0%	10,780	+2.6 pp	Other Asia
3608 Maarssenbroek	28.6%	3,590	+3.4 pp	Other Asia
3603 Centrum ten zuiden van de Vecht	17.0%	2,670	+1.7 pp	Other Europe
3606 Maarssenbroek	77.0%	870	+27.5 pp	Other Asia

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	5,120	3,640	1,480	265	1,225	45	215	355	190	85	95	5	20	145	55	245	35	480	1,000
1999	5,130	3,630	1,495	270	1,230	45	215	350	195	80	90	5	20	155	70	240	35	485	1,015
2000	5,090	3,585	1,505	280	1,225	55	225	330	180	75	90	0	15	175	70	250	40	495	1,005
2001	5,040	3,520	1,515	280	1,235	55	245	325	175	70	95	0	20	165	75	250	40	495	1,025
2002	4,930	3,430	1,500	255	1,240	60	265	305	165	95	90	5	15	145	70	250	30	455	1,050
2003	5,010	3,470	1,545	290	1,260	70	285	290	160	85	90	5	20	175	80	250	40	480	1,070
2004	4,955	3,415	1,540	275	1,265	75	300	295	160	85	90	5	15	165	75	240	35	460	1,080
2005	5,150	3,585	1,570	275	1,290	75	325	295	160	95	90	5	15	165	80	220	40	465	1,105
2006	5,185	3,635	1,555	280	1,275	85	315	290	170	85	80	10	15	175	60	225	45	475	1,075
2007	5,250	3,680	1,570	300	1,260	85	315	265	165	85	85	10	15	190	75	230	40	500	1,070
2008	5,260	3,685	1,575	295	1,285	85	320	280	165	85	85	10	15	185	75	230	45	490	1,090
2009	5,285	3,695	1,595	325	1,270	80	310	275	165	80	95	20	15	195	80	230	50	510	1,080
2010	5,270	3,700	1,575	320	1,250	85	300	275	170	80	95	25	15	185	75	225	40	510	1,065
2011	5,230	3,660	1,570	330	1,235	85	305	270	165	80	90	30	15	195	65	220	45	515	1,055
2012	5,250	3,660	1,595	350	1,240	85	300	265	165	80	90	35	20	205	75	235	35	540	1,055
2013	5,310	3,670	1,640	370	1,275	85	300	270	165	90	80	45	20	225	75	245	45	560	1,085
2014	5,550	3,855	1,695	390	1,310	90	320	275	180	80	80	55	15	240	70	240	55	595	1,105
2015	5,610	3,845	1,765	425	1,345	100	320	275	170	85	80	70	20	255	90	250	55	620	1,155
2016	5,705	3,940	1,765	435	1,330	105	310	260	170	80	85	80	20	250	90	255	60	625	1,145
2017	5,675	3,865	1,810	445	1,365	110	295	270	170	80	80	90	20	255	100	285	55	645	1,170
2018	5,790	3,925	1,865	465	1,400	115	310	280	155	80	85	80	20	280	100	300	60	640	1,220
2019	5,775	3,900	1,875	480	1,395	120	305	280	145	75	85	80	25	290	110	300	60	640	1,230
2020	5,770	3,840	1,930	465	1,465	130	305	280	145	80	90	75	20	280	120	340	65	630	1,300
2021	5,730	3,735	1,995	495	1,495	130	315	290	140	70	95	75	25	300	125	370	55	655	1,330
2022	5,750	3,665	2,085	505	1,580	140	320	285	145	80	90	85	30	300	130	410	75	665	1,375
2023	5,755	3,635	2,125	515	1,610	145	315	280	150	80	85	80	30	320	125	440	75	690	1,395
2024	5,820	3,640	2,180	525	1,655	145	310	280	135	75	85	80	25	330	115	505	85	–	–
2025	5,790	3,600	2,190	530	1,655	150	300	280	125	70	95	75	25	335	125	520	85	–	–
2026	5,745	3,575	2,170	525	1,645	150	285	280	120	65	85	70	30	340	120	545	80	–	–

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