The EDDM demographic filtering works on the postal route level. You aren't filtering by households with $X income, you're filtering by routes where the househol

The EDDM demographic filtering works on the postal route level. You aren't filtering by households with $X income, you're filtering by routes where the households have an average income of $X income. For what it's worth. [ED - also worth mentioning this is just using census data.] Similarly, you can't use the tool to send mail to 40 year olds, you can just see that the route you selected is 40% over age 40, or whatever.