Original sentence: Hispanics are 23.61% of the population.There are 190,724 housing units at an average density of 649.9/km² (1,683.3/mi²)
Edited sentence: The fastest growing ethnic group are Hispanics, now at 23.61% of the population Hispanic or Latino, mainly due to illegal immigration from Mexico and a high birth rate.There are 190,724                                                                                                                             housing units at an average density of 649.9/km² (1,683.3/mi²)