The headquarters of NBN 4, Philippine Broadcasting Service and the ABS-CBN Broadcast Center and GMA Network Center is also located in Diliman. Some villages in this portion of Diliman are Teachers Village, U. This is primarily a middle-class residential area home to many subdivisions (residential associations) such as Don Jose Heights, Ideal Subdivision, Jordan Park Homes, Doña Carmen Subdivision, Filinvest's 1 and 2 and other subdivisions.
Commonwealth area has one of the largest barangays in the Philippines as it plays host to one of the largest squatters' communities in the country.
Surrounding the city hall are spacious parks and open areas.
Some of the national government agencies whose head offices are located in Diliman are the: Land Transportation Office (LTO) Bureau of Internal Revenue (BIR) Philippine Nuclear Research Institute (PNRI) Social Security System (SSS) National Power Corporation (NAPOCOR) National Printing Office (NPO) Philippine Drug Enforcement Agency (PDEA) Dangerous Drugs Board (DDB) National Statistics Office (NSO) National Housing Authority (NHA) Housing and Land Use Regulatory Board (HLURB) National Telecommunications Commission (NTC) Philippine Institute of Volcanology and Seismology (PHIVOLCS) Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) Land Transportation Franchisihng and Regulatory Board (LTFRB) Philippine Information Agency (PIA) National Computer Center (NCC) Occupational Safety and Health Center (OSHC) Office of the Ombudsman Court of Tax Appeals The Departments of Agriculture (DA), Agrarian Reform (DAR), Interior and Local Government (DILG), and the Environment and Natural Resources (DENR).
To the south lies San Juan and Mandaluyong City while Marikina City and Pasig City borders Quezon City to the southeast.