The size of Frenchs Forest is approximately 8.4 square kilometres.

It has 35 parks covering nearly 15.9% of total area. The population of Frenchs Forest in 2011 was 13,191 people.

By 2016 the population was 13,467 showing a population growth of 2.1% in the area during that time.

The predominant age group in Frenchs Forest is 40-49 years. Households in Frenchs Forest are primarily couples with children and are likely to be repaying over $4000 per month on mortgage repayments.

In general, people in Frenchs Forest work in a professional occupation.

In 2011, 87.9% of the homes in Frenchs Forest were owner-occupied compared with 84.7% in 2016.