How are the numbers in your address made up?

Answer 1

I assign house numbers for our county. The Post Office sets the high and low numbers for a given area. Usually a land lot. In other words they dont want us to go over a certain number like 9000 or under 6000. It also depends if the street runs N-S or E-W as to how high or low a number will go. Also all even numbers go on one side and odd on the other. m

Answer 2

I assume you mean Street Address rather than an email address.

A street is divided by blocks, which may or may not begin and end with intersecting streets. Lets say that "Elm" street has 14 blocks and the city planner allowed for a maximum of 6 houses on each block. The first house on the street would be 11 or 101. the second house may be 13 or 103 or something of that nature. Even house numbers on one side of the road, odds on the other. When they reach the second block it changes to 21 or 201. At every block, the first number(s) corresponds to that block number.

This identification system is critical with emergency service personnel (i.e. Police and Firefighters) as it allows them to quickly and accurately estimate the scene of an accident from the address given in their radio dispatches. It also allows for generalities to be made in the radio dispatches as well (example, a firefighter may be sent to the 700-block of Elm street for a car accident or a police officer may be sent to 812 Elm street for a break in. When the firefighter reaches 701 he begins looking for the car wreck. When the police officer reaches 810, he knows he is right about where he needs to be.)

Answer 3

On city/suburban streets with 3 or 4 digit addresses the first 1 or 2 digits are the block number and the last 2 are your house number on that block, even on one side odd on the other. Other then following those rules it's just whatever the developer or city chooses.