Post Proper Northside is included in the Second Congressional District of Makati. It completes the Cluster 6 or the North East Cluster along with Guadalupe Viejo, Cembo and West Rembo. This barangay occupies the whole Bonifacio Global City and Makati City Jail. This barangay is predominantly mixed-use because of the presence of the Bonifacio Global City (BGC) and International Schools.
It has a total land area of 2.376 square kilometers and consist of 6,010 population based on 2010 Census Population conducted by the National Statistics Office. In addition, it has a percentage share of 1.14% versus the city’s population with an estimate of at least 1,202 households.Considering its land area and population count, the barangay has a population density of 22 person per 1,000 square meters.