Below solution works if you iterating json on page itself.
<script>
$(function () {
var _Obj = { "delivery_codes": [{ "postal_code": { "district": "Bellary", "pin": 583217, "max_amount": 0.0, "pre_paid": "N", "cash": "N", "pickup": "N", "repl": "N", "cod": "N", "sort_code": null, "is_oda": "N", "state_code": "KA", "max_weight": 0.0 } }] };
var _tmp = "";
$.each(_Obj["delivery_codes"][0]["postal_code"],function (i, val) {
_tmp += "<li>" + i + "=" + val + "</li>"
});
$("#list").html("<ul>" + _tmp + "/<ul>");
});
</script>