Is there a word to describe someone who knows a place or an area very well?

Solution 1:

In my experience, that word most commonly used for this is simply familiar, carrying the sixth verb definition from Merriam-Webster:

having personal or intimate knowledge —used with with <familiar with the facts of the case>

Examples of how this can be used:

Q: Excuse me, can you please direct me the nearest gas station? A: Sorry, I'm not familiar with this neighborhood.

I just moved here a few months ago, but I already feel familiar with the local traffic patterns.

Solution 2:

Not a single word, but an apt phrase:

• She knows this area like the back of her hand.

Solution 3:

Trying to find an answer, I came across up on something.

Here are the definition and some examples:

knowledgeable about someone or something.

Ask Tom about the author of this book. He's up on stuff like that. (TFT)

Conrad’s really up on his geography, isn’t he? (Longman)

You’re really up on the celebrity gossip, aren’t you? (Macmillan)

‘Anyway, you seem to be up on physics, and you seem to know what I'm saying so maybe you could help me here.’ (OED)

Solution 4:

In Swedish we have the exact word "bevandrad" literally "walked about".

It translates to acquainted, versed or skilled.

There is a word "bewandered".

Verb

bewander ‎(third-person singular simple present bewanders, present participle bewandering, simple past and past participle bewandered)

(intransitive) To wander around or about; roam.