CREATE TABLE table_255829_1 (municipality VARCHAR2, pop_density__per_km_2__ VARCHAR2)

What municipality has a 130.6 pupulation density?
SELECT municipality FROM table_255829_1 WHERE pop_density__per_km_2__ = "130.6"
SELECT "municipality" FROM "table_255829_1" WHERE "130.6" = "pop_density__per_km_2__"