Twain Harte has a post office, with many others nearby. It's Sheriff's Community Serices Unit, open Mon-Fri, can answer questions about public safety issues. (For emergency call 911. Response time can be slow because they are usually coming from Sonora.)
There are two coin laundries in the area, and a mail/copy/print shop that can handle faxing, sending and receiving packages, and rental computers with Internet access.
There are two car repair shops in Twain Harte, and more in Sonora, but most are open only Monday-Friday.
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