Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
In terms of places where you want to deposit your money, the last place on your list should be a zoo (あず). I mean seriously, you know the animals are just gonna munch up all your dolla bills.
What? You deposited how much?