Table: sunbury_county
Columns: official_name
status
area_km_2
population
census_ranking

Question: What is the population of northfield parish that has an area less than 342.4?
SQL: SELECT SUM("population") FROM sunbury_county WHERE "area_km_2" < 342.4 AND "official_name" = 'northfield'

Question: What is the population of the parish with a census ranking of 579 of 5,008?
SQL: SELECT SUM("population") FROM sunbury_county WHERE "census_ranking" = '579 of 5,008'

Question: What is the population of the parish that has an area of 304.06?
SQL: SELECT SUM("population") FROM sunbury_county WHERE "area_km_2" = 304.06