Postcode · Maarssen, Utrecht

Postcode 3604: Neighbourhoods Op Buuren and Friezenbuurt

On 1 January 2026, postcode 3604 in Maarssen (Op Buuren and Friezenbuurt) had 2,540 residents. 19.5% of them (495 people) have a migration background: they were born abroad or have at least one parent who was. That is lower than Maarssen (27.0%) and lower than the national average (29.1%). The largest origin groups are other Europe (5.3%), Indonesia (2.6%) and Germany (2.2%). 47.5% of residents with a migration background were born abroad themselves. Since 2022 the share has risen by 3.4 percentage points.

Residents: 2,540 on 1 January 2026
Migration background: 19.5% 495 people
Born abroad: 47.5% of those with a migration background
Change since 2022: +3.4 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

80% 19%

Dutch origin 80.3% 2,040
Migration background 19.5% 495

Largest origin groups

Bars show each group’s share of all residents of 3604. For comparison, the line marks Maarssen and the circle the Netherlands.

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

5.3% 135 people

Maarssen 5.0% Netherlands 5.6%
Indonesia

2.6% 65 people

Maarssen 2.3% Netherlands 1.9%
Germany

2.2% 55 people

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

2.2% 55 people

Maarssen 1.5% Netherlands 1.7%
Other Asia Asia excluding Indonesia and Turkey

2.0% 50 people

Maarssen 6.0% Netherlands 5.3%
Other Africa Africa excluding Morocco

1.2% 30 people

Maarssen 1.8% Netherlands 2.3%
Turkey

1.0% 25 people

Maarssen 1.5% Netherlands 2.6%
Suriname

1.0% 25 people

Maarssen 2.4% Netherlands 2.0%
Morocco

0.79% 20 people

Maarssen 2.8% Netherlands 2.4%
Dutch Caribbean Aruba, Curaçao, Sint Maarten, Bonaire, Sint Eustatius and Saba

0.79% 20 people

Maarssen 0.83% Netherlands 1.1%
Poland

0.39% 10 people

Maarssen 0.69% Netherlands 1.4%
Belgium

0.39% 10 people

Maarssen 0.48% Netherlands 0.76%

First and second generation

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

47% 54%

Born abroad (first generation) 47.5% 235
Born in the Netherlands (second generation) 53.5% 265

Men and women

Men: 1,265
Women: 1,275

Compared with all postcodes

Netherlands 29.1% 3604 19.5%

Higher than 55% 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

19.5%

3604
Maarssen
Netherlands

Show as table

Year	3604	Maarssen	Netherlands
1998	10.1%	16.3%	16.7%
1999	9.9%	16.7%	17.1%
2000	9.6%	16.8%	17.5%
2001	10.0%	17.1%	18.0%
2002	8.9%	17.2%	18.4%
2003	9.7%	17.4%	18.8%
2004	10.8%	17.8%	19.0%
2005	12.0%	17.8%	19.2%
2006	10.9%	17.9%	19.3%
2007	10.3%	18.1%	19.4%
2008	9.5%	18.2%	19.6%
2009	12.2%	18.5%	19.9%
2010	11.9%	18.5%	20.3%
2011	12.1%	18.7%	20.6%
2012	12.2%	18.7%	20.9%
2013	13.0%	19.2%	21.1%
2014	12.7%	19.3%	21.4%
2015	12.9%	19.5%	21.7%
2016	13.5%	19.7%	22.1%
2017	13.3%	20.0%	22.6%
2018	13.5%	20.3%	23.1%
2019	13.5%	20.7%	23.6%
2020	14.0%	21.4%	24.2%
2021	14.1%	21.9%	24.6%
2022	16.1%	23.4%	26.0%
2023	16.4%	24.8%	27.1%
2024	17.1%	25.8%	27.9%
2025	18.1%	26.4%	28.5%
2026	19.5%	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
3555 Noordwest	41.0%	8,445	+3.0 pp	Morocco
3602 Maarsseveen, Zandweg-Oostwaard	14.8%	3,415	+2.1 pp	Other Europe
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
3611 Oud Zuilen	16.0%	595	+1.8 pp	Indonesia
3542 West	26.9%	130	−6.4 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	1,135	1,020	115	55	60	5	5	5	30	15	25	5	0	25	0	0	0	90	25
1999	1,115	1,010	110	60	45	0	0	5	30	10	20	5	0	35	0	0	0	80	25
2000	1,095	990	105	55	55	0	0	0	30	10	20	5	0	30	5	5	5	80	20
2001	1,095	985	110	45	60	5	5	0	25	10	20	0	0	25	0	15	5	75	35
2002	1,065	970	95	45	60	5	0	5	20	10	20	5	0	20	5	10	5	70	25
2003	1,030	930	100	50	45	0	0	5	15	10	25	5	5	15	5	10	0	70	30
2004	1,060	940	115	60	55	5	0	0	20	10	25	5	5	25	10	10	0	85	35
2005	1,040	915	125	60	60	5	0	5	20	10	30	5	5	20	5	10	5	80	45
2006	1,145	1,020	125	65	65	5	5	0	20	15	30	5	5	25	0	15	10	90	35
2007	1,165	1,045	120	55	65	5	0	5	20	10	25	5	10	15	0	15	10	85	35
2008	1,205	1,090	115	55	60	5	0	5	25	10	25	5	5	20	0	5	10	80	35
2009	1,315	1,155	160	65	90	5	0	10	25	10	30	0	5	30	15	15	10	95	60
2010	1,510	1,330	180	75	105	10	5	10	30	10	35	0	5	35	5	20	15	115	65
2011	1,740	1,520	210	80	135	10	5	15	35	10	40	0	5	35	10	25	25	130	85
2012	2,045	1,790	250	90	165	15	10	20	50	10	40	5	5	40	5	25	30	155	95
2013	2,190	1,910	285	110	175	10	5	25	60	10	40	5	10	55	15	25	25	180	105
2014	2,355	2,055	300	120	180	10	10	20	65	15	40	5	15	60	10	25	25	195	110
2015	2,480	2,160	320	110	210	15	15	20	65	15	40	5	10	55	20	30	30	190	135
2016	2,550	2,205	345	130	215	15	15	20	65	20	45	5	10	70	20	30	30	205	140
2017	2,585	2,240	345	130	215	15	15	20	60	15	40	10	20	60	15	35	40	205	135
2018	2,560	2,215	345	120	220	10	20	25	65	15	45	5	10	60	15	35	35	200	140
2019	2,555	2,210	345	120	225	15	20	20	65	15	45	10	5	60	15	40	35	205	140
2020	2,570	2,210	360	135	225	10	30	20	65	15	45	10	10	70	15	30	40	215	145
2021	2,580	2,215	365	130	240	20	25	20	65	20	45	10	5	70	20	30	40	215	155
2022	2,545	2,135	410	155	255	20	20	20	70	25	55	10	5	80	25	30	50	230	150
2023	2,530	2,120	415	150	260	20	20	15	70	25	50	10	5	85	25	35	45	225	155
2024	2,520	2,090	430	170	260	25	20	20	65	20	50	15	5	100	25	30	55	–	–
2025	2,535	2,070	460	180	285	25	20	20	65	20	50	15	10	105	30	45	50	–	–
2026	2,540	2,040	495	210	285	25	20	25	65	20	55	10	10	135	30	50	55	–	–

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