this is based in a fictional city near Kenosha.I think that they went a little too far going multi-cultural from the preview I watched. It's Wisconsin.
here is 2000 census data from kenosha: The racial makeup of the city was 83.6% White, 7.7% African American, 0.4% Native American, 1.0% Asian, <0.1% Pacific Islander, 4.8% from other races and 2.4% from two or more races.
its not that far off to have some friends of color