The population is shrinking, while it grows in Groningen. Homes cost more than the average in the municipality of Groningen, and registered crime per resident is lower.
590 residents,
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Compared with the municipality of Groningen · newest year available
© Kadaster / PDOK, CBS
The average WOZ value in Klein Martijn is €599,000, 91% higher than in Groningen (€313,000). Between 2021 and 2025 the average WOZ value rose 27%, against a rise of 39% in Groningen. 89% of the homes are owner-occupied, 48 percentage points more than in Groningen (41%).
The average WOZ value rose 27% between 2021 and 2025, to €599,000.
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 for a typical dwelling here: ~€394 per month (excluding mortgage and energy)
Typical home here, before mortgage and energy
Model estimates, not bills.
For this home, Groningen's OZB, sewage and waste levies rank 273rd of 334 gemeenten, cheapest first.
Water board, maintenance and insurance are estimated from national rates and the home's value and size, so they aren't compared.
Source: Municipal levies + CBS 2026
Klein Martijn has the 2nd-highest WOZ value of the 7 buurten in Midden-Zuid.
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)
Here: €599,000 average WOZ value.
| Value | Dwellings | Aged 65+ | |
|---|---|---|---|
| Klein Martijn | 599,000 | 291 | – |
| Sterrebosbuurt | 477,000 | 339 | – |
| Coendersborg | 313,000 | 1,701 | – |
| Villabuurt | 813,000 | 440 | – |
| Helpman | 304,000 | 3,494 | – |
| De Wijert | 238,000 | 2,754 | – |
| De Wijert-Zuid | 453,000 | 1,524 | – |
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)
The largest category is owner-occupied, at 89% of dwellings.
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
79% of the dwelling stock is single-family homes.
CBS publishes this as a share of the dwelling stock, not a count.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
100% of dwellings were built between 1992 and 2005, against 10% in the municipality of Groningen.
Based on 291 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
In 2025, 35 crimes per 1,000 residents were registered in Klein Martijn, 43% lower than in Groningen (61). Since 2021 the registered rate per 1,000 residents rose 61%, against a rise of 24% in Groningen. Crimes are counted where they happen, not where the offender lives.
In 2025, Klein Martijn registered 35 crimes per 1,000 residents, against 61 in the municipality of Groningen.
Crime is counted where it happens and divided by the number of residents, so places with many visitors — city centres, nightlife, stations — score higher.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
In 2025, Klein Martijn registered 35 crimes per 1,000 residents, against 61 in the municipality of Groningen.
Registered crime, not all crime — CBS/Politie 47018NED. A year without a matching population figure (KWB) is left out.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
The largest category in Klein Martijn is 'Theft and burglary': 16.8 per 1,000 residents in 2025, against 34.7 in the municipality of Groningen.
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'.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
Home burglary 2023-2025: 8.0 per 1,000 dwellings a year on average, against 3.0 in the municipality of Groningen.
Averaged over 3 years (2023-2025) to dampen year-to-year noise at low counts.
Source: CBS/Politie geregistreerde misdrijven (47018NED) 2025
In 2024, police in Klein Martijn registered 2 traffic accidents, of which 2 with injury and none fatal.
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
An estimated 82% of adults in Klein Martijn rate their own health as good, 7 percentage points more than in Groningen. Fewer adults report anxiety or depression (32% against 50%), fewer smoke (6% against 21%), fewer feel lonely (42% against 50%) and fewer drink excessively (5% against 8%). Built-up land is the largest land use in Klein Martijn, covering 56% of the area, against 21% in Groningen. Green space such as parks, sports fields, forest and nature covers 41% of the area, 27 percentage points above the 14% in Groningen.
An estimated 82% of adults rate their own health as good, against 75% in the municipality of Groningen (2024).
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
41% of the area is green (parks, sport, nature), against 14% in the municipality of Groningen.
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
A large supermarket lies here at an average road distance of 700 m.
| Distance | Value | |
|---|---|---|
| Large supermarket | 700 m | – |
| GP practice | 1,800 m | – |
| Primary school | 1,500 m | – |
| Daycare | 1,100 m | – |
| Large supermarkets | – | 1 |
| GP practices | – | 0 |
| Daycares | – | 0.5 |
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
Klein Martijn has 590 inhabitants (2026), or 2,229 per km² (69% higher than in Groningen). Between 2021 and 2026 the population fell 8%, against a rise of 5% in Groningen. In the 2025 House of Representatives (Tweede Kamer) election, turnout in the municipality of Groningen was 81%, 3 percentage points above the national 78%. Of the parties that are largest nationally, D66 had the highest share there: 24% of the vote, against 17% nationally. Election results exist only per municipality, so these are the municipality's figures.
The population shrank 8% between 2021 and 2026, to 590.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
With 2,229 residents per km², this buurt is 69% more densely populated than the municipality of Groningen.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
In 2025, almost no children were born; 8.4 died per 1,000.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
37% of residents are between 65 and 80.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
50% of residents are married.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
86% of residents have Dutch origin.
Source: CBS Kerncijfers wijken en buurten (KWB) 2026
72% of residents have a higher professional (hbo) or university (wo) education.
Source: CBS Kerncijfers wijken en buurten (KWB) 2024
These figures are for the whole municipality of Groningen; there is no result per buurt or wijk. At the general election (Tweede Kamer) of 29 October 2025, 81% of eligible voters in Groningen voted. The largest party was D66 with 24% of the valid votes.
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
Klein Martijn has an average of 1.2 cars per household, 71% higher than in Groningen (0.7). 35% of cars run on something other than petrol (diesel, LPG or electricity, hybrids included), 6 percentage points more than in Groningen (29%).
Zakelijke dienstverlening is the largest sector, with 25 establishments.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
35% of passenger cars do not run on petrol (diesel, LPG, electric etc.), against 29% in the municipality of Groningen (2025).
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
The share of passenger cars not running on petrol went from 23% to 35% between 2021 and 2025.
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
In 2025, 330 passenger cars and 15 motorcycles were registered here.
At this level CBS publishes only passenger cars and motorcycles, no vans or trucks.
Source: CBS Kerncijfers wijken en buurten (KWB) 2025
86% of addresses are residential; the largest other use is assembly (0.9%).
Based on 339 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
2,229 residents per km²: 4.1 times as densely populated as the Dutch average.
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
| Villabuurt | 970 | €813,000 | 32 |
| Sterrebosbuurt | 960 | €477,000 | 95 |
| De Wijert-Zuid | 3,390 | €453,000 | 30 |
| Coendersborg | 3,180 | €313,000 | 31 |
| Helpman | 6,350 | €304,000 | 42 |
| De Wijert | 4,600 | €238,000 | 48 |