Who decides what home address street numbers will be, and how?

When an area gets developed, the plat is approved by the local planning department, including street names and numbering. The post office also has to approve. It usually has to be approved by the police and fire departments to make it easy to find.

Most areas have a general rule about numbering, like all addresses starting at zero at the Eastern or Western/southern or northern border. But the rules are all different for different cities. Where I live, my street is only three blocks long. But it is parallel with a main drag two blocks over. The number on my block is consistent with the numbers on the main boulevard.

In San Francisco, each street starts at zero, but every block is 100 more. Since Market Street runs diagonally across most of the city, 301 Pine Street is one block west and one block south of 301 California Street.

And, on east west streets, the south side is odd numbers/ the north side even numbers. On north/south streets, the west side is odd, east side even.

Where I live, there are a lot of lakes and every town had a street name related to it being on a lake, the same street name, just different town and zip. Then when the 9–1-1 system came and was upgraded, about 25 years ago, right before I moved here, they added a word to the beginning of the address name, to differentiate the street being with each town. Along with that, the numbers on my street changed. When I moved here and set up my phone, internet and cable with Comcast (which was Susscom or maybe it was even another name before that, I don’t remember), I called to set it up and I said I also have to tell you that the house number changed. They kept saying that the house number is the house number, and I can’t change it. Every time I called about a problem, I said I also have to tell you….. and they said “we can’t change it. I finally wrote a letter (paper letter, snail mail) to David ______, whatever his name was, the CEO of the company. I said that the house number changed, it changed for multiple houses on the street, so I’m not the only one, I no longer live at 25, I now live at 44. Customer Service keeps telling me they can’t change it, it changed for the 9–1-1 system, and I am letting you know that if I ever call 9–1-1 and the fire truck or the ambulance can’t find my house because they are looking for #25 instead of #44, I am going to sue you. Within a week or two, I received a letter saying that they are changing the house number on my future stuff.

Where lived 18 years ago I had #35 for RFD and street name . . .9–1-1 came through and the address had to be changed to 93 and street name, That caused my credit rating to drop due the change of address/ I moved ! lol

Currently in my North Carolina county one name is used 3 times, each is in a different zip code, but 911 is county wide.