Nevada is located in the Empty Interior region, except for a west corner and a south corner, which fall in the California region. In the last 20 years its southern part has become increasingly urbanized. In 2000, the northern part was still non-metropolitan. Between 1990 and 2000, the state experienced larger areas of population growth than any other state in the Union. Nevada had some of the lowest poverty rates in the country as recently as nine years ago.