US Master Address List

Indicates the precision of the latitude and longitude values.

• Unknown - Coordinates not known. Reasons could include: address is invalid, military address (APO or FPO), lat/lon coordinates not available.
• Zip5 - Accurate to a 5-digit ZIP Code level (least precise)
• Zip6 - Accurate to a 6-digit ZIP Code level
• Zip7 - Accurate to a 7-digit ZIP Code level
• Zip8 - Accurate to an 8-digit ZIP Code level
• Zip9 - Accurate to a 9-digit ZIP Code level
• Parcel - Accurate to the centroid of a property parcel.
• Rooftop - Accurate to the rooftop of a structure for this address.

Note: Concerning addresses for which the ZIP9 precision is not available, the ZIP# precision is interpolated based on neighboring addresses. Thus, ZIP7 is an average of all the lat/long coordinates of nearby ZIP Codes that share those first 7 digits.

Residential - The address is a residential address

Commercial - The address is a commercial address

[blank] - This happens when the address doesn't have enough information to ascertain RDI status, such as an R7 address.

Note: PO Boxes are always marked as "Residential."

SDP (Single Delivery Point) address status. Many distinct addresses can share a delivery point, such as a loft or basement apartment. These address have their own distinct address, and are often even their own separate structure, but receive mail at the same location as the "root" address. There are 3 possible values:

R - root. This is the "preferred" location for the delivery point

S - shared. This is an address that shares a delivery point with the root address

[blank] - This address does not share a delivery point with any other address