Rajajinagar was developed in the post-independence decades as part of Bengaluru's planned suburban expansion, taking its name in honour of C. Rajagopalachari — Rajaji — one of the founding leaders of independent Bharat and the first Indian Governor-General. The locality represents the organised residential ethos of a newly independent India building civic infrastructure for its growing middle class, a tradition that continues in its well-maintained blocks and community institutions.

Served by the Namma Metro Magenta Line with Rajajinagar station providing direct access to Bengaluru City Railway Station and Kempegowda International Airport corridor. BMTC bus routes cover the length of the locality. Tumkur Road and the western ring road give strong inter-city highway access toward Tumakuru and the Nelamangala corridor.

Ganesha Chaturthi is the dominant community event, with elaborate pandals across Rajajinagar's residential blocks drawing large gatherings through Bhadrapada (August–September). Ugadi marks the Kannada new year with kolam decorations and neighbourhood celebrations. The Dasara season sees homes lit with diyas and the city's procession routes within easy reach. Hemanta Ritu brings Bengaluru's characteristic cool evenings that fill the open markets.