This map represents the responses clients provided to the question, what was the zip code of your last permanent address.
HUD considers this an optional data point. 68.8% of clients answered this question. Most of the missing data is night by night emergency shelters where a full entry is not completed, including the two largest shelters in Polk County. There are also some cases where only the head of a household answers the question, and children in the household show null values.
This map represents where clients served in Iowa in 2015 said they were from, not where they received services.