CREATE TABLE table_name_51 (us_state_district VARCHAR, charter_date VARCHAR)

What state or district has a charter date of april 17, 2011?
SELECT us_state_district FROM table_name_51 WHERE charter_date = "april 17, 2011"
SELECT "us_state_district" FROM "table_name_51" WHERE "april 17, 2011" = "charter_date"