Anyone know of any free sources of square footage by US zip? I did not have success looking on the census bureau. The AI(chatgpt, claude, copilot)s have suggested there could be disparate sources i’d need to cobble together, and that might work, i’m only looking at about 10 states.
Total square footage of what? Of homes? Office space? The actual land in the state? (this should be widely and easily available stated as square miles or square kilometers so I assume this is not what you mean).
I think you’re going to find that sort of information difficult to find.
“Area by ZIP Code” isn’t exactly a well-defined metric given that many ZIP Codes are for PO boxes (what do you use for that?) as well as “single location” destinations (again, what do you use for that?).
Also I’m still confused by what you mean by square footage. Usually square footage refers to a structure. If you want the area of a zip code that would usually be expressed in acres, hectares, square miles, or square kilometers.
Can you please clarify whether you are discussing land or buildings?
At any rate, if ZCTAs will work for you, there is a lot of data at the ZCTA level available for free from the U.S. Census Bureau.
I doubt they’d have the square footage of structures in a ZCTA, but they probably have the area of the ZCTA or the population and population density (from which you could derive the area).