How long does it take USPS standard delivery form California to Kansas?

First Class Mail is delivered in three to five days.

First class mail is delivered in 3 to 5 days

Well i sent a number of presorted self addressed stamped envelopes from Erie to Chicago last Februrary. I put them in my mailbox Saturday evening around 6:15. The mail man showed up Tuesday because...

i dont know usually a week or posibaly 2

It usually depends on what area you are in California and what area in Pennsylvania your sending the package too and if its first class sending and such.