- Local Government Area (LGA): City of Hurstville City Council , Kogarah Municipal Council
- Distance from Sydney CBD: 17km (10.5 miles)
- Approximate size for this postcode: 8.6 km²
- Total of population in this suburb in year 2011 : 9,702 people
- Median age persons in 2011 was: 36 years old
- Most of people in Mortdale were born in Australia
- Ancestors were mostly from: Australian
- Median individual income in 2011 was: $673 per week
- Median family income was: $1,695 per week
- Median house price (2010): $550,000
- Median unit price (2010): $350,000
-