The population is growing about as fast as in Katwijk. Homes cost more than the average in the municipality of Katwijk, and registered crime per resident is lower.
The average WOZ value in Zanderij is €521,000, 13% higher than in Katwijk (€462,000). Between 2021 and 2025 the average WOZ value rose 34%, against a rise of 37% in Katwijk. 73% of the homes are owner-occupied, 8 percentage points more than in Katwijk (65%).
Key figures
Average WOZ value
€521,000
▲13% higher than Katwijk (€462,000)
Rise in WOZ value since 2021
+34%
▼lower than Katwijk (+37%)
More figures
Owner-occupied dwellings
73%
▲8 percentage points higher than Katwijk (65%)
Social housing
16%
▼11 percentage points lower than Katwijk (27%)
Private rent
11%
▲3 percentage points higher than Katwijk (8%)
Single-family dwellings
77%
▲19 percentage points higher than Katwijk (58%)
Built 1945–1964
0%
▼16 percentage points lower than Katwijk (16%)
Built 2006–2015
19%
▲9 percentage points higher than Katwijk (10%)
Built 2016 and later
12%
▲3 percentage points higher than Katwijk (9%)
Average WOZ value
€521,000
▲13% higher than Katwijk (€462,000)
Rise in WOZ value since 2021
+34%
▼lower than Katwijk (+37%)
More figures
Owner-occupied dwellings
73%
▲8 percentage points higher than Katwijk (65%)
Social housing
16%
▼11 percentage points lower than Katwijk (27%)
Private rent
11%
▲3 percentage points higher than Katwijk (8%)
Single-family dwellings
77%
▲19 percentage points higher than Katwijk (58%)
Built 1945–1964
0%
▼16 percentage points lower than Katwijk (16%)
Built 2006–2015
19%
▲9 percentage points higher than Katwijk (10%)
Built 2016 and later
12%
▲3 percentage points higher than Katwijk (9%)
WOZ value per year
The average WOZ value rose 34% between 2021 and 2025, to €521,000.
Average WOZ value, 2025
€521,000▲ 13% above Katwijk
+34% since 2021
Katwijk +37%
Explanation
The WOZ value as struck on 1 January of the year before the KWB edition.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Modelled ownership costs
Modelled ownership costs for a typical dwelling here: ~€301 per month (excluding mortgage and energy)
€301/ month
Typical home here, before mortgage and energy
113 m² · measured buurt average
WOZ €521,000 · average here
Levies you'll be billed€147NL median
Property tax (OZB)€53€46
Water board levy€46–
Waste levy€30€27
Sewage levy€18€22
Costs to set aside€154
Maintenance reserve€144–
Buildings insurance€10–
Model estimates, not bills.
For this home, Katwijk's OZB, sewage and waste levies rank 216th of 334 gemeenten, cheapest first.
cheapestdearest
Water board, maintenance and insurance are estimated from national rates and the home's value and size, so they aren't compared.
Explanation
The home: one typical home of 113 m² (measured average in this buurt) with the average WOZ value here, €521,000.
Levies: Katwijk's own OZB, sewage and waste rates for 2026. The water board levy uses national average rates.
Set aside: maintenance at 0.85% and buildings insurance at 0.06% a year of the rebuild cost (€1,800 per m²).
NL median: what the same home would pay in the middle gemeente. Gemeenten where a regional body collects the waste levy are left out.
Not included: mortgage and energy. These are estimates, not actual bills.
Source: Municipal levies + CBS 2026
Dwelling value ladder
Zanderij has the 2nd-highest WOZ value of the 6 buurten in Katwijk aan den Rijn.
Average WOZ value from the Netherlands down to this area, and its rank within its own group (e.g. buurten within the same wijk). Provincie is omitted: KWB publishes no province rows to average.
Source: CBS Kerncijfers wijken en buurten (KWB)
WOZ value and age structure
Here: €521,000 average WOZ value.
Value
Dwellings
Aged 65+
Zanderij
521,000
1,138
–
Dorp
528,000
1,133
–
't Sandt
429,000
233
–
Molenwijk
392,000
1,076
–
Cleijn Duin
354,000
551
–
Koestal
389,000
612
–
Explanation
Each circle is an area: position by average WOZ value, size by dwelling count. The 65-and-over share (pct_65_plus) travels on every point but is not yet drawn as a second axis.
Source: CBS Kerncijfers wijken en buurten (KWB)
Dwellings by ownership
The largest category is owner-occupied, at 73% of dwellings.
Owner-occupied73%
Social housing16%
Private rent11%
Explanation
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Dwellings by type
77% of the dwelling stock is single-family homes.
Single-family homes77%
Multi-family homes23%
Explanation
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Dwellings by build period
69% of dwellings were built between 1992 and 2005, against 14% in the municipality of Katwijk.
1945-19640.1%
1992-200569.1%
2006-201518.9%
2016 and later11.9%
Explanation
Based on 1,172 dwellings with a registered construction year in the BAG (verblijfsobjecten whose pand has no usable bouwjaar, such as 1005 or 9999, are excluded).
Source: Kadaster BAG (bag-light.gpkg) 2026-09-01
02 · Safety
Less registered crime per resident than the Katwijk average.
In 2025, 18 crimes per 1,000 residents were registered in Zanderij, 40% lower than in Katwijk (30). Since 2021 the registered rate per 1,000 residents rose 15%, against a rise of 6% in Katwijk. Crimes are counted where they happen, not where the offender lives.
Key figures
Crimes per 1,000 residents, 2025
18
▼40% lower than Katwijk (30)
Change since 2021
+15%
▲higher than Katwijk (+6%)
Home burglary per 1,000 dwellings
1.8
▲12% higher than Katwijk (1.6)
Crimes per 1,000 residents, 2025
18
▼40% lower than Katwijk (30)
Change since 2021
+15%
▲higher than Katwijk (+6%)
Home burglary per 1,000 dwellings
1.8
▲12% higher than Katwijk (1.6)
Registered crimes per 1,000 residents, 2025
In 2025, Zanderij registered 18 crimes per 1,000 residents, against 30 in the municipality of Katwijk.
Zanderij18
The municipality of Katwijk30
Explanation
Crime is counted where it happens and divided by the number of residents, so places with many visitors — city centres, nightlife, stations — score higher.
The largest category in Zanderij is 'Theft and burglary': 6.2 per 1,000 residents in 2025, against 15.0 in the municipality of Katwijk.
ZanderijKatwijk
Theft and burglary6.2
Katwijk 15.0▼ −59% vs Katwijk
Vandalism and public order3.4
Katwijk 3.1▲ +10% vs Katwijk
Fraud and scams3.4
Katwijk 3.5≈ Katwijk
Traffic3.1
Katwijk 4.6▼ −33% vs Katwijk
Violence and threats1.9
Katwijk 3.0▼ −37% vs Katwijk
Environmental0.3
Katwijk 0.1≈ Katwijk
Other and withheld0.0
Katwijk 1.1▼ −100% vs Katwijk
Explanation
Four categories are structurally withheld at buurt level (sex offences, child pornography, child prostitution, other integrity offences); the gap with the published total is shown under 'other'.
In 2024, police in Zanderij registered 8 traffic accidents, of which 3 with injury and 1 fatal.
2020
2021
2022
2023
2024
FatalInjuryMaterial damage only
Explanation
Registered accidents (BRON, Rijkswaterstaat); material-damage-only accidents have not been systematically registered since roughly 2010 and are not comparable between areas. This area shows only accidents with an exactly known location (roughly 80-85% of all registered accidents); the rest is known only at street, intersection or gemeente level. The comparison with the gemeente therefore also uses only the gemeente's exactly-located accidents, which is why that figure is lower than on the gemeente's own page.
Source: BRON — Bestand geRegistreerde Ongevallen Nederland (Rijkswaterstaat) 2024
03 · Living environment
Residents rate their health above the Katwijk average; green space is about the Katwijk average.
An estimated 80% of adults in Zanderij rate their own health as good, 5 percentage points more than in Katwijk. Fewer adults feel lonely (40% against 43%), fewer smoke (14% against 16%) and fewer are overweight (51% against 53%), but more meet the physical activity guideline (50% against 48%). Built-up land is the largest land use in Zanderij, covering 50% of the area, against 33% in Katwijk. Green space such as parks, sports fields, forest and nature covers 24% of the area, in line with the 24% in Katwijk.
Key figures
Self-rated health (estimated)
80%
▲5 percentage points higher than Katwijk (75%)
Green (parks, sport, nature)
24%
=about the same as Katwijk (24%)
More figures
Lonely
40%
▼3 percentage points lower than Katwijk (43%)
Smokes
14%
▼2 percentage points lower than Katwijk (16%)
Anxiety or depression feelings
44%
▼1 percentage point lower than Katwijk (45%)
Overweight
51%
▼2 percentage points lower than Katwijk (53%)
Forest and nature, share of the area
0%
▼18 percentage points lower than Katwijk (18%)
Recreation, share of the area
24%
▲18 percentage points higher than Katwijk (6%)
Built-up, share of the area
50%
▲17 percentage points higher than Katwijk (33%)
Self-rated health (estimated)
80%
▲5 percentage points higher than Katwijk (75%)
Green (parks, sport, nature)
24%
=about the same as Katwijk (24%)
More figures
Lonely
40%
▼3 percentage points lower than Katwijk (43%)
Smokes
14%
▼2 percentage points lower than Katwijk (16%)
Anxiety or depression feelings
44%
▼1 percentage point lower than Katwijk (45%)
Overweight
51%
▼2 percentage points lower than Katwijk (53%)
Forest and nature, share of the area
0%
▼18 percentage points lower than Katwijk (18%)
Recreation, share of the area
24%
▲18 percentage points higher than Katwijk (6%)
Built-up, share of the area
50%
▲17 percentage points higher than Katwijk (33%)
Health
An estimated 80% of adults rate their own health as good, against 75% in the municipality of Katwijk (2024).
This areaThe municipality of Katwijk
Good self-rated health
79.7%
75.4%
Smokes
13.5%
15.9%
Excessive drinking
5.1%
6.3%
Overweight
51.1%
52.8%
Lonely
40%
43%
Anxiety or depression feelings
43.6%
45.4%
Meets physical activity guideline
49.9%
48.5%
Explanation
An RIVM model estimate (small-area estimation from the 2024 Health Monitor for Adults and Elderly), not a direct tabulation — even a buurt that was not itself surveyed gets an estimate. Figures cover adults aged 18 and over.
Source: RIVM/CBS Gezondheidsmonitor Volwassenen en Ouderen (kleine-gebieden-schatting) 2024
Land use
24% of the area is green (parks, sport, nature), against 24% in the municipality of Katwijk.
Traffic4%
Built-up50%
Other built-up10%
Recreation24%
Agriculture8%
Water4%
Explanation
Every share is calculated as a percentage of the TOTAL area (land and water together, peiljaar 2022); water is therefore one of the slices itself, not a separate whole. Green is the sum of recreational terrain (parks, sport fields, allotments, day recreation) and natural terrain (forest, open natural terrain) — agricultural land is not counted as green here.
Source: CBS Bodemgebruik (86211NED) 2022
Distance to amenities
A primary school lies here at an average road distance of 900 m.
Distance
Value
Large supermarket
1,100 m
–
GP practice
1,200 m
–
Primary school
900 m
–
Daycare
900 m
–
Large supermarkets
–
0.4
GP practices
–
0.3
Daycares
–
1.7
Explanation
Average road distance from every address in this buurt to the nearest amenity, and the average count within 1 km — a buurt average, not a distance from one address.
Source: CBS proximity statistics 2025
04 · Residents
The population is growing about as fast as the Katwijk average.
Zanderij has 3,175 inhabitants (2026), or 6,595 per km² (2.4 times as high as in Katwijk). Between 2021 and 2026 the population rose 1%, against a rise of 2% in Katwijk. In the 2025 House of Representatives (Tweede Kamer) election, turnout in the municipality of Katwijk was 84%, 6 percentage points above the national 78%. Of the parties that are largest nationally, PVV (Partij voor de Vrijheid) had the highest share there: 22% of the vote, against 17% nationally. Election results exist only per municipality, so these are the municipality's figures.
Key figures
Population growth since 2021
+1%
=about the same as Katwijk (+2%)
Turnout, municipality of Katwijk
84%
▲6 percentage points higher than the Netherlands (78%)
More figures
Growth of the dwelling stock
+10%
▲higher than Katwijk (+3%)
Aged 45 to 65
32%
▲6 percentage points higher than Katwijk (26%)
Never married
48%
▲3 percentage points higher than Katwijk (45%)
Dutch origin
90%
▲5 percentage points higher than Katwijk (85%)
Secondary education (havo, vwo, mbo 2–4)
46%
=about the same as Katwijk (46%)
PVV (Partij voor de Vrijheid), share of the vote
22%
▲5 percentage points higher than the Netherlands (17%)
Population growth since 2021
+1%
=about the same as Katwijk (+2%)
Turnout, municipality of Katwijk
84%
▲6 percentage points higher than the Netherlands (78%)
More figures
Growth of the dwelling stock
+10%
▲higher than Katwijk (+3%)
Aged 45 to 65
32%
▲6 percentage points higher than Katwijk (26%)
Never married
48%
▲3 percentage points higher than Katwijk (45%)
Dutch origin
90%
▲5 percentage points higher than Katwijk (85%)
Secondary education (havo, vwo, mbo 2–4)
46%
=about the same as Katwijk (46%)
PVV (Partij voor de Vrijheid), share of the vote
22%
▲5 percentage points higher than the Netherlands (17%)
Population per year
The population grew 1% between 2021 and 2026, to 3,175.
Residents, 2026
3,175
+1% since 2021
Katwijk +2%
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Density
With 6,595 residents per km², this buurt is 2.4 times as densely populated as the municipality of Katwijk.
Residents per km²6,595
Dwellings per km²2,370.8
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Births and deaths per 1,000 residents
In 2025, 9.3 children were born per 1,000 residents; 3.1 died per 1,000.
2021
2022
2023
2024
2025
BirthsDeaths
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Residents by age group
32% of residents are between 45 and 65.
0 to 15540
15 to 25580
25 to 45680
45 to 651,030
65 to 80305
80 and over35
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Marital status
48% of residents are never married.
Never married1,535
Married1,415
Divorced155
Widowed70
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Residents by country of origin
90% of residents have Dutch origin.
Netherlands2,855
Europe (excluding the Netherlands)125
Outside Europe195
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Education level of residents aged 15 to 75
46% of residents have a havo, vwo or mbo2-4 level education.
Primary, vmbo, mbo1740
Havo, vwo, mbo2-41,180
Higher professional, university640
Source: CBS Kerncijfers wijken en buurten (KWB) 2024
Parliamentary election
These figures are for the whole municipality of Katwijk; there is no result per buurt or wijk. At the general election (Tweede Kamer) of 29 October 2025, 84% of eligible voters in Katwijk voted. The largest party was PVV (Partij voor de Vrijheid) with 22% of the valid votes.
Municipality of KatwijkThe Netherlands
D66
8.6%
16.9%
PVV (Partij voor de Vrijheid)
22%
16.7%
VVD
13.2%
14.2%
GROENLINKS / Partij van de Arbeid (PvdA)
4.9%
12.8%
CDA
16.6%
11.8%
JA21
7.9%
5.9%
Forum voor Democratie
6.2%
4.5%
BBB
1.9%
2.6%
Other
18.7%
14.4%
Explanation
Official election result (Kiesraad), top 8 parties by national vote count plus 'Other'; share of valid votes. A voter may vote at any polling station in their own gemeente; there is therefore no reliable buurt- or wijk-level result. This figure is the whole gemeente's own result.
Source: Kiesraad — Verkiezingsuitslag Tweede Kamer (data.overheid.nl) TK2025
05 · More figures
More figures
Zanderij has an average of 1.1 cars per household, 10% higher than in Katwijk (1.0). 22% of cars run on something other than petrol (diesel, LPG or electricity, hybrids included), 2 percentage points more than in Katwijk (20%).
Key figures
Government, education and care, share of businesses
25%
▲9 percentage points higher than Katwijk (16%)
Trade and hospitality, share of businesses
13%
▼7 percentage points lower than Katwijk (20%)
Culture, recreation and other services, share of businesses
6%
▼5 percentage points lower than Katwijk (11%)
Cars per household (2025)
1.1
▲10% higher than Katwijk (1.0)
Cars not on petrol (2025)
22%
▲2 percentage points higher than Katwijk (20%)
Change in cars not on petrol since 2021
+11 pp
▲higher than Katwijk (+7 pp)
Residential, share of addresses
99%
▲11 percentage points higher than Katwijk (88%)
Office, share of addresses
0%
▼1 percentage point lower than Katwijk (1%)
Assembly, share of addresses
0%
▼1 percentage point lower than Katwijk (1%)
Social housing
16%
▼12 percentage points lower than the Netherlands (28%)
Multi-family dwellings
23%
▼14 percentage points lower than the Netherlands (37%)
Average WOZ value
€521,000
▲31% higher than the Netherlands (€398,000)
Government, education and care, share of businesses
25%
▲9 percentage points higher than Katwijk (16%)
Trade and hospitality, share of businesses
13%
▼7 percentage points lower than Katwijk (20%)
Culture, recreation and other services, share of businesses
6%
▼5 percentage points lower than Katwijk (11%)
Cars per household (2025)
1.1
▲10% higher than Katwijk (1.0)
Cars not on petrol (2025)
22%
▲2 percentage points higher than Katwijk (20%)
Change in cars not on petrol since 2021
+11 pp
▲higher than Katwijk (+7 pp)
Residential, share of addresses
99%
▲11 percentage points higher than Katwijk (88%)
Office, share of addresses
0%
▼1 percentage point lower than Katwijk (1%)
Assembly, share of addresses
0%
▼1 percentage point lower than Katwijk (1%)
Social housing
16%
▼12 percentage points lower than the Netherlands (28%)
Multi-family dwellings
23%
▼14 percentage points lower than the Netherlands (37%)
Average WOZ value
€521,000
▲31% higher than the Netherlands (€398,000)
Business establishments by sector
Zakelijke dienstverlening is the largest sector, with 70 establishments.
Landbouw, bosbouw en visserij5
Nijverheid en energie40
Handel en horeca35
Vervoer, informatie en communicatie15
Financiële diensten, onroerend goed15
Zakelijke dienstverlening70
Overheid, onderwijs en zorg65
Cultuur, recreatie, overige diensten15
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Passenger cars by fuel type
22% of passenger cars do not run on petrol (diesel, LPG, electric etc.), against 20% in the municipality of Katwijk (2025).
Petrol78.2%
Other fuel (diesel, LPG, electric etc.)21.8%
Explanation
CBS splits passenger cars into 'petrol' and 'other fuel' only. That second category bundles diesel, LPG, electric (including hybrid), hydrogen, alcohol, LNG and CNG together — CBS publishes no separate electric-car count per buurt, wijk or gemeente, so this is not the same as an 'electric share'.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Share on other fuel per year
The share of passenger cars not running on petrol went from 11% to 22% between 2021 and 2025.
Share on other fuel, 2025
22%▲ 2 percentage points above Katwijk (20%)
+11 pp since 2021
Katwijk +6 pp
Explanation
See the 'Passenger cars by fuel type' card for what 'other fuel' covers — this is not the share of electric cars.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Vehicles by kind
In 2025, 1,235 passenger cars and 120 motorcycles were registered here.
Passenger cars1,235
Motorcycles120
Explanation
At this level CBS publishes only passenger cars and motorcycles, no vans or trucks.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Addresses by building use
99% of addresses are residential; the largest other use is healthcare (0.8%).
Residential99.3%
Office0.1%
Assembly0.1%
Healthcare0.8%
Sports0.1%
Other0.5%
Explanation
Based on 1,180 verblijfsobjecten in use. An object with several registered uses (e.g. a flat above a shop) is counted under each of them, so the shares can add up to more than 100%.
Source: Kadaster BAG (bag-light.gpkg) 2026-09-01
Biggest difference from the Netherlands
6,595 residents per km²: 12 times as densely populated as the Dutch average.
This areaThe Netherlands
Residents per km²6,595
NL 539▲ +1124% vs NL
Social housing16%
NL 28%▼ −43% vs NL
Multi-family dwellings23%
NL 37%▼ −38% vs NL
Average WOZ value€521,000
NL €398,000▲ +31% vs NL
Owner-occupied dwellings73%
NL 57%▲ +28% vs NL
Explanation
The 5 characteristics that differ most from the national average, ranked by log ratio (so a halving and a doubling count as equally different); the shown percentage is the ordinary difference against the Netherlands.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026