There are many different numbering schemes for assigning numbers to entities. These generally require an agreed set of rules, or a central coordinator.
Numbering schemes include:
The E.164 numbering plan for telephone numbers, including:
... or Latino of any race.
There are 1,755 households out of which 43.6% have children under the age of 18 living with them, 67.6% are married couples living together, ...