This graph displays the gas prices in 3 boroughs in New York city per gallon. All three boroughs have a similar range but the trend shows that Bronx has the highest price in gas despite having the lowest population. The effect of having to pay more for gasoline despite being the lowest populated. support the idea that both boroughs nearby spend less money on gas therefore may be marginally richer to spend on other things.
References:https://www.numbeo.com/gas-prices/in/Bronx