South Balham
vs Trinity
South Balham has the younger population: 30% of residents are aged 15–29, against 28% in Trinity. Homes in South Balham sold for a median of £615,000, in line with Trinity. South Balham has more green space nearby (13% within 500 m, against 8%).
People
South Balham has 9,829 residents in 4,422 households; Trinity has 10,039 in 4,446. The share of residents aged 65 and over is about the same in both (9% and 10%). South Balham has the higher share of people living alone: 34%, 1 percentage point more than Trinity (Wandsworth: 30%).
Homes and prices
In both, flats are the most common type of home: 26% of homes in South Balham and 41% in Trinity. Trinity has the higher share of owner-occupied homes: 48%, 5.2 percentage points more than South Balham (Wandsworth: 43%). Trinity has the higher share of private renting: 39%, 1.6 percentage points more than South Balham (Wandsworth: 36%). Over two years, homes sold for a median of £615,000 in South Balham and £600,000 in Trinity, against £640,000 across Wandsworth.
Surroundings
South Balham has the higher share of land within 500 m that is green space: 13%, 5.9 percentage points more than Trinity (Wandsworth: 12%). A typical postcode has 282 everyday shops and services within a 15-minute walk in South Balham, and 295 in Trinity. The typical postcode is 348 m from the nearest school in South Balham and 252 m in Trinity. The typical postcode is 463 m from the nearest tram stop or railway station in South Balham and 408 m in Trinity. Gigabit-capable broadband reaches 89% of premises in South Balham and 96% in Trinity.
Safety
Over 12 months, police recorded 73 crimes and incidents per 1,000 residents in South Balham and 85 in Trinity, against 101 across Wandsworth. 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.
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.
South Balham is one of 22 wards in Wandsworth, home to 9,829 people in 4,422 households (Census 2021). Homes sold for a median of £615,000 over the past two years, 4% below the Wandsworth median. On average 13% of the land within 500 metres of a home postcode is green space — 16% above the Wandsworth average.
Trinity is one of 22 wards in Wandsworth, home to 10,039 people in 4,446 households (Census 2021). Homes sold for a median of £600,000 over the past two years, 6% below the Wandsworth median. On average 8% of the land within 500 metres of a home postcode is green space — 35% below the Wandsworth average.
More comparisons.
South Balham and Trinity next to other wards of Wandsworth.