Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_34538 ( "IN No." real, "County Name" text, "County Seat" text, "Time Zone" text, "Population (2010) (Rank)" text, "Area sq mi (km 2 ) (Rank)" text, "Twps" real, "ZIP code Prefix(es)" text, "% of Boundary by water" text )

### Question ###
what is the zip code of boonville

### Accurate SQL ###

SELECT "ZIP code Prefix(es)" FROM table_34538 WHERE "County Seat" = 'boonville'