You will have to keep an eye on the landvalue overlay to create areas for each range.
Parks are probably the easiest way to create zones for each range as they are grouped by wealth value... but if a zone is already mid or high wealth a lower tier park wont bring it down.
A bunch of placed buildings raise the land value around them to medium and sometimes high wealth. so try to place them in the right zones or they might screw up your land value map a bit.