![po box in post office po box in post office](https://auspost.com.au/content/dam/auspost_corp/home/3-stooges/photo-woman-collecting-mail-from-post-office-box.jpg)
![po box in post office po box in post office](https://previews.123rf.com/images/neostock/neostock1412/neostock141200005/34209942-vintage-p-o-box-service-at-post-office.jpg)
I tried several PO Box RegExp patterns found on the internet including the ones posted on Stack Overflow, none of them passed our test requirements.
I tried several PO Box RegExp patterns found on the internet including the ones posted on Stack Overflow, none of them passed our test requirements.