Headquarters: Machilipatnam. The present district extends from the Krishna delta toward the Bay of Bengal. Locate this district first in relation to the coast, the Godavari or Krishna corridors, the Eastern Ghats or the Rayalaseema plateau. These physical belts often reveal why a crop, port, reservoir or pilgrimage place appears in a district question. Read the number on the accompanying current-boundary map before memorising a headquarters. A town name on a pre-2022 map can remain correct geographically but lead to the wrong present-district option.
Exam anchor: Machilipatnam is both district headquarters and a historic port-town association; delta paddy and coastal exposure shape the economy. This is a place-to-theme association, not a claim that every landmark in the surrounding region belongs inside the district. Keep a separate column for a river or landscape, a site or activity, and the administrative headquarters. In a map question, begin at the state outline, narrow to the regional belt, and only then select the district polygon. The order is more dependable than recognising a familiar town name in isolation.
Boundary and date caution: Vijayawada belongs to NTR district in the current arrangement. Old undivided Krishna district figures include places now outside present Krishna. District-level population, area, output and mandal totals are especially sensitive to reorganisation. An exact figure should carry its reference year and boundary vintage; this book does not silently attach an old census total to a new polygon. If the stem quotes an older notification, answer for that date. If it asks for the current district, use the 2026 map and official district portal.
Worked example: Krishna district now has Machilipatnam as its coastal headquarters while Vijayawada belongs to NTR district. A question that asks which district contains the port and which contains the large city is testing the 2022 split. Trace the Krishna River toward the coast, then place each district separately. An older Krishna district list may include both towns for its own date.
Active recall: Name the headquarters of Krishna; place it on the map; give one physical-geography anchor and explain the dated boundary trap above.