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Family Area Report

SM4 St Helier — Family Area Report

St Helier · Merton

Council Tax Band D · 2025/26Merton£2,225/yr
Family densityHigh · 28–34%34.7% of households have dependent children
68
Family Score

Ranked against every London postcode we cover.

SM4 is the London postcode area covering St Helier in the London Borough of Merton. It scores 68/100 on our family-life index. It's strongest on green space (100/100) and weakest on commute (25/100). The Met recorded 0 incidents in 2026-05, and there are 27 parks within walking distance. The nearest central London hub is Waterloo in 46 min on the morning rush. 34.7% of households here have dependent children — high.

What borough is SM4 in?

SM4 is in the London Borough of Merton. Its representative postcode sits in the St Helier ward. On our family-life index, SM4 scores 68/100 against every other London postcode we cover.

Safety90
Amenities40
Green space100
Family density70
Commute25

Safety

0 incidents in May 2026

SM4 is one of the safer London postcodes we cover, scoring 90/100 on safety. The Met logged 0 incidents here in May 2026.

    Counts cover a single calendar month (May 2026) — the latest released by data.police.uk.

    Family life

    Within 1km

    Parks
    27
    GP surgeries
    0
    Libraries
    0
    Supermarkets
    2

    Sources: NHS ODS (GPs) · FSA (supermarkets) · OpenStreetMap (parks, libraries)

    Commute

    6 central London hubs · Morning rush

    Slow · 46–55 min
    WaterlooFastest
    46 min
    via Thameslink & South Western Railway
    King's Cross
    54 min
    via Northern & Victoria
    Liverpool Street
    56 min
    via Northern & Metropolitan
    Canary Wharf
    64 min
    via Northern & Jubilee
    Paddington
    62 min
    via Northern & Victoria & Bakerloo
    Victoria
    46 min
    via Northern & Victoria

    Door-to-door, arriving by 08:15 on a weekday. Source: TfL Journey Planner. Nearest hub: Waterloo in 46 min.

    How this is built.

    Scores are percentiles within our London cohort: your score is relative to other London areas, not absolute. School catchment guidance is powered by School Owl. Crime is from data.police.uk, latest available month.

    Family density is drawn from ONS Census 2021 household composition data at LSOA level. We map each postcode to its representative LSOA and rank it against the 32 London postcodes in our cohort.

    Commute times are pre-calculated via the TfL Journey Planner API for a weekday arrival at 08:15, from the centre of each postcode to Waterloo, King's Cross, Liverpool Street, Canary Wharf, Paddington and Victoria.

      SM4 — frequently asked questions

      The things families ask us most about St Helier, answered from the same data behind the scores above.

      What London borough is SM4 in?
      SM4 is in the London Borough of Merton. Its representative postcode falls in the St Helier ward. SM4 scores 68/100 on our family-life index against every other London postcode we cover.
      Is SM4 a good area for families?
      SM4 (St Helier, Merton) scores 68/100 on our family-life index, making it a solid pick among the London postcodes we cover. Safety 90/100, amenities 40/100, green space 100/100 and commute 25/100.
      What are the schools like in SM4?
      Merton is small and oversubscribed, particularly around Wimbledon, where distance cut-offs are among the tightest in South London. Published admission distances are available on School Owl; proximity does not guarantee admission.
      How safe is SM4?
      The Metropolitan Police recorded 0 crime incidents in SM4 in May 2026 (the latest month released by data.police.uk). On our cohort-relative scale, SM4 scores 90/100 for safety.
      How long is the commute from SM4 to central London?
      Using the TfL Journey Planner for a weekday 08:15 arrival, the fastest of our six central London hubs from SM4 is Waterloo in about 46 minutes. We benchmark commute times to Waterloo, King's Cross, Liverpool Street, Canary Wharf, Paddington and Victoria.
      Do many families live in SM4?
      34.7% of households in SM4's representative LSOA have dependent children (ONS Census 2021), which we band as high (28–34%) versus the rest of London.

      Areas near SM4

      The closest postcodes to SM4 we cover are SM3 (North Cheam, ~2.7km), SW20 (Raynes Park, ~2.8km), SM1 (Sutton Central, ~3.0km) and CR4 (Figge's Marsh, ~3.0km). Families weighing SM4 usually shortlist one or two of these — open a full report or compare them side-by-side below.

      Nearby reports

      SM1Sutton Central· 69SM2Sutton South· 67SM3North Cheam· 65SM5Carshalton Central· 70SM6Wallington North· 68

      Head-to-head

      SM4 vs SM1SM4 vs SM2SM4 vs SM3SM4 vs SM5SM4 vs SM6

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