Streatham St Leonard's (ward) displays distinctive ethnic group characteristics:

The main ethnic group is White British, representing 39% of the population. On average, 37% of the population in London belong to the White British ethnic group.

The following ethnic groups have proportions higher than average for the London:

• Mixed comprise 9%, while average for London is 6%
• Black Caribbean comprise 7%, while average for London is 4%

Conversely, the following ethnic groups have a proportion lower than the average for London:

• Indian comprise 4%, while average for London is 7%
• Bangladeshi comprise 0.6%, while average for London is 4%
• Other Asian comprise 1.8%, while average for London is 5%

Streatham St Leonard's (ward) displays distinctive religion characteristics:

The main religion is Christian, representing 44% of the population. On average, 41% of the population in London belong to the Christian religion.

The following religions have proportions higher than average for the London:

• No Religion comprise 36%, while average for London is 27%

Conversely, the following religions have a proportion lower than the average for London:

• Hindu comprise 2.1%, while average for London is 5%
• Muslim comprise 10%, while average for London is 15%
• Sikh comprise 0.3%, while average for London is 1.6%

Streatham St Leonard's (ward) displays distinctive age band characteristics:

The main age band is Aged 20 to 39, representing 41% of the population. On average, 33% of the population in London belong to the Aged 20 to 39 age band.

The following age bands have proportions higher than average for the London:

• Aged 20 to 39 comprise 41%, while average for London is 33%

Conversely, the following age bands have a proportion lower than the average for London:

• Aged 60 to 79 comprise 10%, while average for London is 13%

Streatham St Leonard's (ward) displays distinctive household type characteristics:

The main household type is One-person household, representing 31% of the population. On average, 29% of the population in London belong to the One-person household household type.

The following household types have proportions higher than average for the London:

• Single-family: no children comprise 18%, while average for London is 14%
• Multiple families or unrelated people comprise 16%, while average for London is 13%

Conversely, the following household types have a proportion lower than the average for London:

• Single-family: all aged 66 and over comprise 1.9%, while average for London is 4%
• Single-family: with non-dependent children comprise 6%, while average for London is 11%