When looking for synonyms for the phrase "economically diverse neighbourhood," there are a number of options to choose from. Some of the most commonly used phrases include "socioeconomically mixed area," "financially varied community," and "income-diverse neighborhood." Other possible choices could include "economically heterogeneous district," "diverse economic locale," or "mixed financial environment." Ultimately, the choice of phrasing will depend on the specific context in which it is being used. However, regardless of the exact wording chosen, the message remains the same: the neighbourhood in question is a diverse and complex mix of individuals and socioeconomic backgrounds.