Question: What is the sum of the areas for populations of 542?
SQL: SELECT SUM("Area km 2") FROM "2-170961-1" WHERE "Population" = 542.0;

Question: What is the highest area for locations named Centreville having populations over 532?
SQL: SELECT MAX("Area km 2") FROM "2-170961-1" WHERE "Population" > 532.0 AND "Official Name" = 'Centreville';