CREATE TABLE table_25042332_16 (region VARCHAR2, below_50_percentage_of_median_income VARCHAR2)

In what region does 17.4% of the population make below 50% of the median income?
SELECT region FROM table_25042332_16 WHERE below_50_percentage_of_median_income = "17.4%"
SELECT "region" FROM "table_25042332_16" WHERE "17.4%" = "below_50_percentage_of_median_income"