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Castle
vs Kingsley & Semilong

Castle has the younger population: 30% of residents are aged 15–29, against 22% in Kingsley & Semilong. Homes in Kingsley & Semilong sold for a median of £210,000, 17% above Castle. Kingsley & Semilong has more green space nearby (18% within 500 m, against 10%).

Map of West Northamptonshire with Castle highlighted
Castle
505 postcodes
Map of West Northamptonshire with Kingsley & Semilong highlighted
Kingsley & Semilong
237 postcodes
Map of West Northamptonshire
West Northamptonshire
city average

People

Castle has 20,466 residents in 8,952 households; Kingsley & Semilong has 13,213 in 5,521. Kingsley & Semilong has the higher share of residents aged 65 and over: 12%, 4.5 percentage points more than Castle (West Northamptonshire: 17%). Castle has the higher share of people living alone: 40%, 7.4 percentage points more than Kingsley & Semilong (West Northamptonshire: 27%).

20,466Residents (2021)
13,213Residents (2021)
425,725Residents (2021)
8,952Households
5,521Households
172,639Households
29.5%Aged 15–29
22.4%Aged 15–29
17.7%Aged 15–29
7.3%Aged 65 and over
11.8%Aged 65 and over
17.1%Aged 65 and over
39.7%Living alone
32.3%Living alone
26.9%Living alone

Homes and prices

The most common type of home is flats in Castle (49%) and terraced houses in Kingsley & Semilong (46%). Kingsley & Semilong has the higher share of owner-occupied homes: 46%, 22.7 percentage points more than Castle (West Northamptonshire: 65%). Castle has the higher share of private renting: 51%, 14.4 percentage points more than Kingsley & Semilong (West Northamptonshire: 19%). Over two years, homes sold for a median of £180,000 in Castle and £210,000 in Kingsley & Semilong, against £300,000 across West Northamptonshire.

£180,000Median sale price
£210,000Median sale price
£300,000Median sale price
23.0%Owner-occupied
45.7%Owner-occupied
64.8%Owner-occupied
50.8%Private renting
36.4%Private renting
19.1%Private renting
23.8%Social renting
16.7%Social renting
14.4%Social renting
3.7%Detached houses
6.8%Detached houses
31.7%Detached houses
4.7%Semi-detached houses
22.9%Semi-detached houses
31.6%Semi-detached houses
30.2%Terraced houses
45.9%Terraced houses
23.1%Terraced houses
48.5%Flats
18.4%Flats
10.8%Flats

Surroundings

Kingsley & Semilong has the higher share of land within 500 m that is green space: 18%, 8.5 percentage points more than Castle (West Northamptonshire: 16%). A typical postcode has 404 everyday shops and services within a 15-minute walk in Castle, and 150 in Kingsley & Semilong. The typical postcode is 476 m from the nearest school in Castle and 371 m in Kingsley & Semilong. The typical postcode is 1,105 m from the nearest tram stop or railway station in Castle and 2,134 m in Kingsley & Semilong. Gigabit-capable broadband reaches 82% of premises in Castle and 96% in Kingsley & Semilong.

9.5%Green space within 500 m
18.0%Green space within 500 m
15.8%Green space within 500 m
404Services within 15 min (median)
150Services within 15 min (median)
40Services within 15 min (median)
476 mNearest school (median)
371 mNearest school (median)
–Nearest school (median)
1.1 kmNearest tram or rail (median)
2.1 kmNearest tram or rail (median)
–Nearest tram or rail (median)
28Postcodes in flood risk areas
6Postcodes in flood risk areas
508Postcodes in flood risk areas
82.3%Gigabit broadband (premises)
96.4%Gigabit broadband (premises)
94.8%Gigabit broadband (premises)

Safety

Over 12 months, police recorded 358 crimes and incidents per 1,000 residents in Castle and 220 in Kingsley & Semilong, against 96 across West Northamptonshire. Police.uk records crimes by approximate location, not by where victims or offenders live. Busy streets, shops, stations and nightlife record more. Figures are counts, not a measure of personal risk.

358Recorded crime per 1,000 residents
220Recorded crime per 1,000 residents
96Recorded crime per 1,000 residents

Sources: Census 2021 (ONS) · HM Land Registry Price Paid Data · official school registers · © OpenStreetMap contributors · Environment Agency · data.police.uk, 12 months to Aug 2026 · Ofcom Connected Nations

In brief.

Each ward in a few lines, from its own page.

Castle

Castle is one of 35 wards in West Northamptonshire, home to 20,466 people in 8,952 households (Census 2021). Homes sold for a median of £180,000 over the past two years, 40% below the West Northamptonshire median. On average 10% of the land within 500 metres of a home postcode is green space — 40% below the West Northamptonshire average.

Kingsley & Semilong

Kingsley & Semilong is one of 35 wards in West Northamptonshire, home to 13,213 people in 5,521 households (Census 2021). Homes sold for a median of £210,000 over the past two years, 30% below the West Northamptonshire median. On average 18% of the land within 500 metres of a home postcode is green space — 14% above the West Northamptonshire average.

More comparisons.

Castle and Kingsley & Semilong next to other wards of West Northamptonshire.

Castle vs Abington & PhippsvilleCastle vs Far Cotton, Delapre & Briar HillCastle vs Dallington SpencerKingsley & Semilong vs Kingsthorpe SouthKingsley & Semilong vs Abington & PhippsvilleKingsley & Semilong vs Dallington SpencerAll wards of West Northamptonshire