# zip```js// usagechance.zip()chance.zip({plusfour:true})```
Generate a random (U.S.) zip code.
```jschance.zip();=>'90210'```
Can optionally specify that it ought to return a [Zip+4][zip+4]:
```jschance.zip({plusfour:true});=>'01035-1838'```
[zip+4]: http://vq.io/19rzsve