The population is growing faster than in Zaanstad. Homes cost more than the average in the municipality of Zaanstad, and registered crime per resident is lower.
The average WOZ value in Westknollendam is €428,000, 10% higher than in Zaanstad (€389,000). Between 2024 and 2025 the average WOZ value stayed about level, against a rise of 1% in Zaanstad. 64% of the homes are owner-occupied, 10 percentage points more than in Zaanstad (54%).
Key figures
Average WOZ value
€428,000
▲10% higher than Zaanstad (€389,000)
Rise in WOZ value since 2024
-0%
=about the same as Zaanstad (+1%)
More figures
Owner-occupied dwellings
64%
▲10 percentage points higher than Zaanstad (54%)
Social housing
34%
▼2 percentage points lower than Zaanstad (36%)
Private rent
2%
▼8 percentage points lower than Zaanstad (10%)
Single-family dwellings
92%
▲30 percentage points higher than Zaanstad (62%)
Built 1965–1974
4%
▼13 percentage points lower than Zaanstad (17%)
Built 1992–2005
1%
▼11 percentage points lower than Zaanstad (12%)
Built before 1945
12%
▼6 percentage points lower than Zaanstad (18%)
Average WOZ value
€428,000
▲10% higher than Zaanstad (€389,000)
Rise in WOZ value since 2024
-0%
=about the same as Zaanstad (+1%)
More figures
Owner-occupied dwellings
64%
▲10 percentage points higher than Zaanstad (54%)
Social housing
34%
▼2 percentage points lower than Zaanstad (36%)
Private rent
2%
▼8 percentage points lower than Zaanstad (10%)
Single-family dwellings
92%
▲30 percentage points higher than Zaanstad (62%)
Built 1965–1974
4%
▼13 percentage points lower than Zaanstad (17%)
Built 1992–2005
1%
▼11 percentage points lower than Zaanstad (12%)
Built before 1945
12%
▼6 percentage points lower than Zaanstad (18%)
WOZ value per year
The average WOZ value held steady between 2024 and 2025, at €428,000.
Average WOZ value, 2025
€428,000▲ 10% above Zaanstad
+0% since 2024
Zaanstad +1%
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: ~€294 per month (excluding mortgage and energy)
€294/ month
Typical home here, before mortgage and energy
118 m² · measured buurt average
WOZ €428,000 · average here
Levies you'll be billed€133NL median
Water board levy€44–
Sewage levy€31€22
Waste levy€29€27
Property tax (OZB)€29€38
Costs to set aside€161
Maintenance reserve€150–
Buildings insurance€11–
Model estimates, not bills.
For this home, Zaanstad's OZB, sewage and waste levies rank 184th 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 118 m² (measured average in this buurt) with the average WOZ value here, €428,000.
Levies: Zaanstad'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
Westknollendam has the 3rd-highest WOZ value of the 7 buurten in Wormerveer.
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: €428,000 average WOZ value.
Value
Dwellings
Aged 65+
Westknollendam
428,000
190
–
Wormerveer Zuid
332,000
1,910
–
Wormerveer Centrum
341,000
1,675
–
Wormerveer Noord
304,000
1,562
–
Wormerveer West
313,000
819
–
Karnemelksepolder
722,000
134
–
Industriebuurt
443,000
119
–
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 64% of dwellings.
Owner-occupied64%
Social housing34%
Private rent2%
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
92% of the dwelling stock is single-family homes.
Single-family homes92%
Multi-family homes8%
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
60% of dwellings were built between 1975 and 1991, against 20% in the municipality of Zaanstad.
Before 194512.2%
1945-196415.1%
1965-19743.9%
1975-199159.5%
1992-20051.5%
2016 and later7.8%
Explanation
Based on 205 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 Zaanstad average.
In 2025, 21 crimes per 1,000 residents were registered in Westknollendam, 54% lower than in Zaanstad (46). Since 2024 the registered rate per 1,000 residents fell 22%, against a rise of 1% in Zaanstad. Crimes are counted where they happen, not where the offender lives.
Key figures
Crimes per 1,000 residents, 2025
21
▼54% lower than Zaanstad (46)
Change since 2024
-22%
▼lower than Zaanstad (+1%)
Home burglary
0
2023–2025
Crimes per 1,000 residents, 2025
21
▼54% lower than Zaanstad (46)
Change since 2024
-22%
▼lower than Zaanstad (+1%)
Home burglary
0
2023–2025
Registered crimes per 1,000 residents, 2025
In 2025, Westknollendam registered 21 crimes per 1,000 residents, against 46 in the municipality of Zaanstad.
Westknollendam21
The municipality of Zaanstad46
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 Westknollendam is 'Violence and threats': 12.6 per 1,000 residents in 2025, against 5.6 in the municipality of Zaanstad.
WestknollendamZaanstad
Violence and threats12.6
Zaanstad 5.6▲ +125% vs Zaanstad
Fraud and scams4.2
Zaanstad 5.0▼ −16% vs Zaanstad
Vandalism and public order2.1
Zaanstad 5.4▼ −61% vs Zaanstad
Traffic2.1
Zaanstad 7.9▼ −73% vs Zaanstad
Theft and burglary0.0
Zaanstad 20.3▼ −100% vs Zaanstad
Environmental0.0
Zaanstad 0.2≈ Zaanstad
Other and withheld0.0
Zaanstad 1.6▼ −100% vs Zaanstad
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 2023, police in Westknollendam registered 3 traffic accidents, of which 1 with injury and none fatal.
2021
2022
2023
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) 2023
03 · Living environment
Residents rate their health above the Zaanstad average; green space is above the Zaanstad average.
An estimated 74% of adults in Westknollendam rate their own health as good, 4 percentage points more than in Zaanstad. Fewer adults feel lonely (42% against 49%), fewer report anxiety or depression (44% against 50%) and fewer smoke (16% against 18%), but more meet the physical activity guideline (50% against 47%). Recreational land is the largest land use in Westknollendam, covering 36% of the area, against 6% in Zaanstad. Green space such as parks, sports fields, forest and nature covers 42% of the area, 23 percentage points above the 19% in Zaanstad.
Key figures
Self-rated health (estimated)
74%
▲4 percentage points higher than Zaanstad (70%)
Green (parks, sport, nature)
42%
▲23 percentage points higher than Zaanstad (19%)
More figures
Lonely
42%
▼7 percentage points lower than Zaanstad (49%)
Anxiety or depression feelings
44%
▼6 percentage points lower than Zaanstad (50%)
Meets physical activity guideline
50%
▲3 percentage points higher than Zaanstad (47%)
Smokes
16%
▼2 percentage points lower than Zaanstad (18%)
Agriculture, share of the area
0%
▼33 percentage points lower than Zaanstad (33%)
Recreation, share of the area
36%
▲30 percentage points higher than Zaanstad (6%)
Water, share of the area
31%
▲20 percentage points higher than Zaanstad (11%)
Self-rated health (estimated)
74%
▲4 percentage points higher than Zaanstad (70%)
Green (parks, sport, nature)
42%
▲23 percentage points higher than Zaanstad (19%)
More figures
Lonely
42%
▼7 percentage points lower than Zaanstad (49%)
Anxiety or depression feelings
44%
▼6 percentage points lower than Zaanstad (50%)
Meets physical activity guideline
50%
▲3 percentage points higher than Zaanstad (47%)
Smokes
16%
▼2 percentage points lower than Zaanstad (18%)
Agriculture, share of the area
0%
▼33 percentage points lower than Zaanstad (33%)
Recreation, share of the area
36%
▲30 percentage points higher than Zaanstad (6%)
Water, share of the area
31%
▲20 percentage points higher than Zaanstad (11%)
Health
An estimated 74% of adults rate their own health as good, against 70% in the municipality of Zaanstad (2024).
This areaThe municipality of Zaanstad
Good self-rated health
73.7%
69.5%
Smokes
16.4%
18.5%
Excessive drinking
7.3%
5.6%
Overweight
54.6%
54.4%
Lonely
42.3%
49.2%
Anxiety or depression feelings
44.5%
50.3%
Meets physical activity guideline
49.5%
46.9%
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
42% of the area is green (parks, sport, nature), against 19% in the municipality of Zaanstad.
Traffic5.6%
Built-up22.2%
Recreation36.1%
Forest and nature5.6%
Water30.6%
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 200 m.
Distance
Value
Large supermarket
3,300 m
–
GP practice
3,500 m
–
Primary school
200 m
–
Daycare
2,600 m
–
Large supermarkets
–
0
GP practices
–
0
Daycares
–
0
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 faster than the Zaanstad average.
Westknollendam has 485 inhabitants (2026), or 2,083 per km² (7% lower than in Zaanstad). Between 2024 and 2026 the population rose 9%, against a rise of 2% in Zaanstad. In the 2025 House of Representatives (Tweede Kamer) election, turnout in the municipality of Zaanstad was 72%, 6 percentage points below the national 78%. Of the parties that are largest nationally, PVV (Partij voor de Vrijheid) had the highest share there: 18% of the vote, against 17% nationally. Election results exist only per municipality, so these are the municipality's figures.
Key figures
Population growth since 2024
+9%
▲higher than Zaanstad (+2%)
Turnout, municipality of Zaanstad
72%
▼6 percentage points lower than the Netherlands (78%)
More figures
Growth of the dwelling stock
+0%
▼lower than Zaanstad (+2%)
Aged 45 to 65
31%
▲5 percentage points higher than Zaanstad (26%)
Never married
50%
▼2 percentage points lower than Zaanstad (52%)
Dutch origin
82%
▲23 percentage points higher than Zaanstad (59%)
Secondary education (havo, vwo, mbo 2–4)
43%
▼1 percentage point lower than Zaanstad (44%)
PVV (Partij voor de Vrijheid), share of the vote
18%
▲1 percentage point higher than the Netherlands (17%)
Population growth since 2024
+9%
▲higher than Zaanstad (+2%)
Turnout, municipality of Zaanstad
72%
▼6 percentage points lower than the Netherlands (78%)
More figures
Growth of the dwelling stock
+0%
▼lower than Zaanstad (+2%)
Aged 45 to 65
31%
▲5 percentage points higher than Zaanstad (26%)
Never married
50%
▼2 percentage points lower than Zaanstad (52%)
Dutch origin
82%
▲23 percentage points higher than Zaanstad (59%)
Secondary education (havo, vwo, mbo 2–4)
43%
▼1 percentage point lower than Zaanstad (44%)
PVV (Partij voor de Vrijheid), share of the vote
18%
▲1 percentage point higher than the Netherlands (17%)
Population per year
The population grew 9% between 2024 and 2026, to 485.
Residents, 2026
485
+9% since 2024
Zaanstad +2%
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Density
With 2,083 residents per km², this buurt is 7% less densely populated than the municipality of Zaanstad.
Residents per km²2,083
Dwellings per km²826.1
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Births and deaths per 1,000 residents
In 2025, 10.5 children were born per 1,000 residents; 10.5 died per 1,000.
2024
2025
BirthsDeaths
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Residents by age group
31% of residents are between 45 and 65.
0 to 1570
15 to 2565
25 to 45105
45 to 65150
65 to 8080
80 and over15
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Marital status
50% of residents are never married.
Never married245
Married205
Divorced30
Widowed10
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Residents by country of origin
82% of residents have Dutch origin.
Netherlands400
Europe (excluding the Netherlands)35
Outside Europe55
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
Education level of residents aged 15 to 75
43% of residents have a havo, vwo or mbo2-4 level education.
Primary, vmbo, mbo1100
Havo, vwo, mbo2-4160
Higher professional, university110
Source: CBS Kerncijfers wijken en buurten (KWB) 2024
Parliamentary election
These figures are for the whole municipality of Zaanstad; there is no result per buurt or wijk. At the general election (Tweede Kamer) of 29 October 2025, 72% of eligible voters in Zaanstad voted. The largest party was PVV (Partij voor de Vrijheid) with 18% of the valid votes.
Municipality of ZaanstadThe Netherlands
D66
16.8%
16.9%
PVV (Partij voor de Vrijheid)
18.2%
16.7%
VVD
13.2%
14.2%
GROENLINKS / Partij van de Arbeid (PvdA)
15.2%
12.8%
CDA
6.9%
11.8%
JA21
5.8%
5.9%
Forum voor Democratie
4.9%
4.5%
BBB
2%
2.6%
Other
17%
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
Westknollendam has an average of 1.3 cars per household, 30% higher than in Zaanstad (1.0). 25% of cars run on something other than petrol (diesel, LPG or electricity, hybrids included), 3 percentage points more than in Zaanstad (22%).
Key figures
Government, education and care, share of businesses
7%
▼9 percentage points lower than Zaanstad (16%)
Industry and energy, share of businesses
29%
▲8 percentage points higher than Zaanstad (21%)
Culture, recreation and other services, share of businesses
14%
▲4 percentage points higher than Zaanstad (10%)
Cars per household (2025)
1.3
▲30% higher than Zaanstad (1.0)
Cars not on petrol (2025)
25%
▲3 percentage points higher than Zaanstad (22%)
Change in cars not on petrol since 2024
+4 pp
▲higher than Zaanstad (+2 pp)
Residential, share of addresses
93%
▲5 percentage points higher than Zaanstad (88%)
Industrial, share of addresses
0%
▼4 percentage points lower than Zaanstad (4%)
Sports, share of addresses
1%
▲1 percentage point higher than Zaanstad (0%)
Multi-family dwellings
8%
▼29 percentage points lower than the Netherlands (37%)
Residents per km²
2,083
▲3.9 times as high as the Netherlands (539)
Single-family dwellings
92%
▲29 percentage points higher than the Netherlands (63%)
Government, education and care, share of businesses
7%
▼9 percentage points lower than Zaanstad (16%)
Industry and energy, share of businesses
29%
▲8 percentage points higher than Zaanstad (21%)
Culture, recreation and other services, share of businesses
14%
▲4 percentage points higher than Zaanstad (10%)
Cars per household (2025)
1.3
▲30% higher than Zaanstad (1.0)
Cars not on petrol (2025)
25%
▲3 percentage points higher than Zaanstad (22%)
Change in cars not on petrol since 2024
+4 pp
▲higher than Zaanstad (+2 pp)
Residential, share of addresses
93%
▲5 percentage points higher than Zaanstad (88%)
Industrial, share of addresses
0%
▼4 percentage points lower than Zaanstad (4%)
Sports, share of addresses
1%
▲1 percentage point higher than Zaanstad (0%)
Multi-family dwellings
8%
▼29 percentage points lower than the Netherlands (37%)
Residents per km²
2,083
▲3.9 times as high as the Netherlands (539)
Single-family dwellings
92%
▲29 percentage points higher than the Netherlands (63%)
Business establishments by sector
Nijverheid en energie is the largest sector, with 20 establishments.
Landbouw, bosbouw en visserij0
Nijverheid en energie20
Handel en horeca10
Vervoer, informatie en communicatie5
Financiële diensten, onroerend goed5
Zakelijke dienstverlening15
Overheid, onderwijs en zorg5
Cultuur, recreatie, overige diensten10
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
Passenger cars by fuel type
25% of passenger cars do not run on petrol (diesel, LPG, electric etc.), against 22% in the municipality of Zaanstad (2025).
Petrol75.5%
Other fuel (diesel, LPG, electric etc.)24.5%
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 21% to 25% between 2024 and 2025.
Share on other fuel, 2025
25%▲ 3 percentage points above Zaanstad (22%)
+4 pp since 2024
Zaanstad +3 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, 265 passenger cars and 45 motorcycles were registered here.
Passenger cars265
Motorcycles45
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
93% of addresses are residential; the largest other use is assembly (0.9%).
Residential92.8%
Office0.5%
Assembly0.9%
Industrial0.5%
Education0.5%
Sports0.9%
Other4.1%
Explanation
Based on 221 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
2% private rent, against 14% nationally.
This areaThe Netherlands
Private rent2%
NL 14%▼ −86% vs NL
Multi-family dwellings8%
NL 37%▼ −78% vs NL
Residents per km²2,083
NL 539▲ +287% vs NL
Single-family dwellings92%
NL 63%▲ +46% vs NL
Social housing34%
NL 28%▲ +21% 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) 2025