[Symbiote]

Where can you buy stamps in the USA?

It varies by country. Most convenience shops, supermarkets, etc will sell stamps in the UK, and I'd guess the US is like this, but in some other countries only the post office is allowed to sell them.

(My postal votes for the UK come with an international postage paid envelope.)

[saltcured]

The last time I bought some it was from my bank's ATM, but that was almost ten years ago. I think stamps were sold by grocers when I was a child, but I have no idea whether they continue to bother stocking them...

In California, ballots are handled by the resident's county government, and I think each county may design ballots and procedures differently as long as they meet some statewide requirements.

The next mail-in ballot in Los Angeles will change format and become postage pre-paid. I suspect they've changed the postage because the new return format appears to be more bulky than a simple 1st class envelope.

[emidln]

My book store sold stamps in college, as did the convenience mart across the street. I never really needed to go to the post office, but you can always buy stamps (and mail weirdly shaped things) at the post office directly.

[cafard]

The largest local drug store chain, CVS, sells stamps. Generally, though, I buy them at the post office, which seldom has long lines.