Surrounded by the Nepean River and Sickles Creek, Grasmere is a predominantly low density residential environment with agricultural uses on the floodplain. Offering broad, open views of plains and rolling hills, they exhibit a scenic rural landscape and environment that accommodates residential living sustainable farming and agricultural land uses. The size of Grasmere is approximately 6 km².
The population of Grasmere in 2001 was 1,427 people. By 2006 the population was 1,529 showing a population growth of 7% in the area during that time. The predominant age group in Grasmere is 80 and over years. Households in Grasmere are primarily couples with children and are likely to be repaying over $2000.00 per month on mortgage repayments. In general, people in Grasmere work in a non-specific occupation. In 2001, 70% of the homes in Grasmere were owner-occupied compared with 69% in 2006. Currently the median sale price of houses in the area is $258,000.