I imported a list of people with just their zip code as location data.
I'm trying to get a shaded area map by zip code with a count of people in each zip code shown by density color.
I can only seem to get a count-based shaded area map if I ask for a higher-level than my data (3-digit zip, county, etc). The count option is removed when I choose zip code level display and it wants to sum some field. But couldn't get either to work with a field with the number 1 for each record hoping it would sum them.
Seems like I must be missing something basic.