# What rules even & odd numbered street addresses?

Depends on the city, but most planners when designing a municipality start with an intersection of 0/0 to start numbering for West/East and North/South. In Chicago for instance it is State and Madison. From there numbers get larger as you move away from the 0/0 start point. One side is even and the other is odd to make it easier to determine where an address is located. In Chicago, even numbered addresses for North/South streets is on the West side of the street and for West?East streets it's on the South side of the street. I know many other cities that abide by this logic as well. There are several though where chaos exists - New Orleans for example.

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One's on one side, One's on the other. duh.
All the evens are on one side, the odds on the opposite side.
Well, all the places I have lived (Southern California) the odd numbers face E and S. And, logically, even are W and N.
Even numbers are on the left side, and uneven ones are on the right side, or not?
obviously it varies by city, but typically they have cross road that naturally forms when a town is born. and that becomes Main street and Jefferson drive(I'm making an example) and then the streets/avenues are numbered going out from the X and then distinguished by NE/SE/NW/NE.

The city I am in now is bisected by a river running N-S, and then a major 4 lane cuts runs E-W Aves parallel the River, Sts. parallel the 4 lane, and then Drives, Lanes, Courts etc, are named not numbered and usually denote a roade that arcs and connects a St. to an Ave
There are no international, or USA-wide rules for this.

One system begins in the middle of something, like a town. Then we twist our minds and consider the middle to be the beginning point for the street numbering. The same method is used for streets that cross or begin from these streets:
All primary buildings on the left side will have odd numbers.
All primary buildings on the right side of the street will have even numbers.
That's how one town does it. That way the odd/even parity switches from one side of town to the other.

I think I prefer the method where relative to NESW, odd/even is always the same compass-wise instead.

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