Postcode insights

NN1 2SJ

Castle Street

Castle

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Interactive map showing NN1 2SJ and surrounding area

Detailed insights for NN1 2SJ

Overview

Postcode NN1 2SJ is located in an urban city, within the Castle ward of West Northamptonshire in the East Midlands region, and forms part of the Town Centre & Semilong area. It has very high deprivation and very high crime levels, with around 913.2 crimes per 1,000 residents per year, roughly 9.5× the East Midlands average of 96 per 1,000. The average income per household in Town Centre & Semilong is £41,679 per year. The nearest station is Northampton, about 0.2 miles away. There are 5 primary and no secondary schools in the area. There are 5 parks nearby, the closest medium park is Victoria Park.

Crime rate
10/10
Crimes per 1k residents
913
Deprivation level
10/10
Income level
2/10
Social housing
53.8%
Connectivity
N/A
Flood Risk
No risk
Noise Level
High

Deprivation level

10/10

Town Centre & Semilong has a very high level of deprivation, ranked at position 1,372 out of 32,844 areas in the United Kingdom, placing it within the top 4% most deprived areas in England.

Crime level

10/10

Town Centre & Semilong has a very high crime rate, with approximately 913.2 reported incidents per 1,000 population each year.

Social housing

53.8%

Approximately 53.8% of homes on this street are social housing provided by a local council or housing association. Across the surrounding area, around 36.1% of dwellings are socially rented.

Income level

2/10

The average income per household in Town Centre & Semilong is £41,679 per year.

Noise Level

High

High noise level (70.0-74.9 dB) from road, approximately 235 ft away from NN1 2SJ.

Flood risk

No risk

Town Centre & Semilong near NN1 2SJ has no flood risk (less than 0.1% chance of a flood each year) from rivers and sea.

Transport

The nearest station is Northampton located about 0.2 miles away. There are 1 stations nearby.

Nearby public transport stations for NN1 2SJ
DistanceNameLinesDirections
0.2 mi

Northampton

N/A

Walking directions to Northampton

Parks

Nearby parks and green spaces for NN1 2SJ
DistanceNameSizeDirections
0.4 miVictoria ParkMediumWalking directions to Victoria Park
0.4 miMillers MeadowSmallWalking directions to Millers Meadow
0.1 miCastle MoundSmallWalking directions to Castle Mound

Area Profile

Population
290
Population density
3,746.8 per km²

Crime

Crime per 1,000 population

Violence and sexual offences
357.14(+937%)
Anti-social behaviour
257.01(+1422%)
Shoplifting
162.22(+1767%)
Public order
117.49(+1598%)
Other theft
93.46(+1540%)
East Midlands average

Demographics

Ethnic groups

British
84
28.87%
African
69
23.71%
Other White
65
22.34%
Other
17
5.84%
Indian
11
3.78%
Total population: 291

Economics

Education (age 16+)

Level 4+ (Degree)
55
28.35%
No qualifications
44
22.68%
Level 2 (GCSEs 9-4)
30
15.46%
Level 3 (A level)
22
11.34%
Level 1 (GCSEs 3-1)
21
10.82%
Total 16+ residents: 194

Housing

Housing tenure

Social rents from council
54
45.38%
Private landlord or letting agency
33
27.73%
Owns with a mortgage
13
10.92%
Other social rented
10
8.4%
Owns outright
4
3.36%
Total households: 119

Property prices in Castle

Median price£180,000
Price per sq ft£222
Sales (last 12 months)137
Typical range (middle 50%)£153K – £217K

Based on 137 recent sales, the median property price is £180,000 (about £222 per square foot) in Castle area, with individual transactions ranging from £55,000 up to £475,000.

Prices by property typelast 12 months

Median sale price, median price per square foot, sales count, and percentile information for each property type in Castle over the last year.
TypeSalesMedian£/sq ft
Detached2£403,500£333
Semi-Detached1£226,000£241
Terraced70£208,500£222
Flats64£148,750£220

10-year price trendmedian sale price in Castle

Sale price

Ten year median sale price trend for each property type in Castle.
YearDetachedFlatsSemi-DetachedTerraced
2016£120,000£206,000£159,000
2017£314,250£130,000£175,000£170,000
2018£320,000£118,000£160,000£174,000
2019£320,000£140,000£182,000£168,500
2020£335,000£137,250£255,000£173,500
2021£332,000£132,000£225,000£190,000
2022£307,625£150,000£205,000£219,750
2023£291,550£140,000£225,000£197,500
2024£150,000£248,000£203,000
2025£405,000£140,000£220,000£210,000
2026£151,000£200,000
Ten year median sale price trend for each property type in Castle.

Price per sq ft

Ten year median sale price per square foot trend for each property type in Castle.
YearDetachedFlatsSemi-DetachedTerraced
2016£191£165£168
2017£253£198£200£185
2018£266£195£269£191
2019£270£241£198£191
2020£293£225£224£195
2021£265£205£183£206
2022£269£220£184£226
2023£302£227£203£224
2024£256£271£216
2025£324£220£241£226
2026£221£203
Ten year median sale price per square foot trend for each property type in Castle.

Price distribution by property typelast 12 months

Price distribution by property type for Castle in the last year.

Recent sales

There were 25 recent sold properties in the last 18 months near NN1 2SJ.

Recent sold properties in the last 18 months near NN1 2SJ
DateAddressTypeTenurePriceMap
17 Apr 20251, Tower Street, Northampton, NN1 2SNTerracedFreehold£88,363
25 Jun 202535, Marefair, Northampton, NN1 1SRFlatsFreehold£250,000
19 Sept 2025Flat 26, St. Andrews Court, St Andrews Street, Northampton, NN1 2HHFlatsLeasehold£145,000
11 Jul 2025Flat 18, St. Andrews Court, St Andrews Street, Northampton, NN1 2HHFlatsLeasehold£136,000
07 Mar 2025Flat 3, Victoria House, 22 - 24, St Andrews Street, Northampton, NN1 2HYFlatsLeasehold£215,000

Schools

In the NN1 2SJ postcode area, located within Town Centre & Semilong, there are 5 primary and 0 secondary schools in close proximity.

Nearby primary and secondary schools for NN1 2SJ
DistancePhaseNameTypeRating
0.2 miPrimarySpring Lane Primary SchoolAcademy sponsor led

Good

0.2 miNot applicableNew Horizons AcademyFree schools alternative provision

N/A

0.3 miPrimaryCastle AcademyAcademy sponsor led

Good

Local amenities

15 nearby supermarkets & convenience stores within mi of NN1 2SJ

Nearby supermarkets & convenience stores for NN1 2SJ
DistanceNameAddressDirections
0.1 miNicky's News2 Little Cross Street, Northampton, NN1 2RXWalking directions to Nicky's News
0.2 miPranees Thai Shop13a Marefair, Northampton, NN1 1SRWalking directions to Pranees Thai Shop
0.2 miAmbe Supermarket30 St Andrews Street, Northampton, NN1 2JDWalking directions to Ambe Supermarket
0.2 miGold Street World's Food Market49 Gold Street, Northampton, NN1 1RAWalking directions to Gold Street World's Food Market
0.2 miSelect Convenience7 Sheep Street, Northampton, NN1 2LTWalking directions to Select Convenience

Council Tax Bands

Annual council tax rates for West Northamptonshire district (2025-26).

Band A£1,575
Band B£1,838
Band C£2,100
Band D£2,363
Band E£2,888
Band F£3,413
Band G£3,938
Band H£4,725

Council tax bands are based on the value of your property. Most homes fall into bands A to D.

Local councillor and member of parliament

Elected local representatives for NN1 2SJ, including ward councillors and the local member of parliament.

Local councillors

Enam Haque

Castle - Elected 1 May 2025

Labour Party

Fartun Ismail

Castle - Elected 1 May 2025

Labour Party

Muna Cali

Castle - Elected 1 May 2025

Labour Party

Member of parliament

Lucy Rigby

Northampton North - Elected 4 Jul 2024

Labour Party

Geographic Information

RegionEast MidlandsUKF
DistrictWest NorthamptonshireE06000062
Parliamentary ConstituencyNorthampton NorthE14001406
WardCastleE05015983
ParishNorthamptonE04013033
MSOA (Middle Layer Super Output Area)Town Centre & SemilongE02005670
LSOA (Lower Layer Super Output Area)West Northamptonshire 032EE01032979
Police ForceNorthamptonshire
Postcode Introduced1980-01-01

Frequently asked questions about NN1 2SJ

Is NN1 2SJ (Town Centre & Semilong) safe?

The area around NN1 2SJ records about 913 crimes per 1,000 residents per year, which is a very high crime rate for England: it scores 10 out of 10 on the Area360 crime scale, where 10 is the highest crime level. Across East Midlands as a whole the rate is about 96 per 1,000. The most common offences locally are violence and sexual offences, anti-social behaviour and shoplifting.

What is the average house price near NN1 2SJ?

The median sale price around NN1 2SJ in Town Centre & Semilong is £180,000 (about £222 per square foot) based on 137 registered sales according to HM Land Registry data.

What schools are near NN1 2SJ?

There are 11 schools close to NN1 2SJ, including Spring Lane Primary School (Good), New Horizons Academy and Castle Academy (Good). Ratings are from the latest Ofsted inspections.

What is the nearest station to NN1 2SJ?

The closest station to NN1 2SJ is Northampton, about 348 m away.

How deprived is the area around NN1 2SJ?

NN1 2SJ scores 10 out of 10 on the deprivation scale, where 10 is the most deprived. Its neighbourhood ranks 1,372 of 32,844 in England on the official Index of Multiple Deprivation (rank 1 is the most deprived).

Who represents NN1 2SJ (Town Centre & Semilong) in Parliament and on the local council?

The Member of Parliament for Northampton North covering NN1 2SJ is Lucy Rigby (Labour Party), elected at the 2024 general election. The area is represented by 3 local councillors: Enam Haque (Labour Party), Fartun Ismail (Labour Party) and Muna Cali (Labour Party).

Data Sources

All data is sourced from official UK government agencies and public datasets. Last updated: 16/07/2026. Read more about how our statistics are calculated.