I think people can figure out where you live by looking at your Instagram.
People can make a pretty good guess as to where you live from your Instagram posts.
1) I think people can figure out where you live by looking at your Instagram.
「あなたのインスタ見てどこに住んでるか目星がつくんじゃない?」
figure out で「目星がつく・わかる」
where you live で「あなたが住んでいるところ」
2) People can make a pretty good guess as to where you live from your Instagram posts.
「インスタの投稿からあなたがどこに住んでいるか大体見当がつくんじゃない?」
make a guess で「見当がつく・憶測がつく」
ご参考になれば幸いです!