Q. How can I find single parent household percentages n Anoka County broken down by race?

In the source from your question, the Statistical Atlas from the U.S. Census Bureau, they do have a graph which (I think) addresses your question. I have attached an image. In the live version of the source, if you hover your cursor over the graph, it gives you percentage breakdowns.

Otherwise, try this.

Head to the American FactFinder and follow these steps.

a). Select guided search, then "get me started."

b).  Select "I'm looking for information about housing" and then click on next.

c).  From the drop-down menu under "occupancy characteristics" select "household type" and this will "float" the table to the right-hand box where your search is being built. Click on next.

d). From the geographic menu, select county, and then for state select Minnesota. Select Anoka County, then click on Add to Your Selections. This will float the table to the right hand box where you will click on next.

e).  Click on "select from basic groups." From the drop down menu choose "race/ethnicity of householder."  This will float your table to the right-hand box. Click on next.

f). You will have to look at each race/ethnicity separately , but they do break it down to "Family, male householder, no wife present" and "Family, Female householder, no husband present."