4567

While 0 has no value and is often placed after 9 on keyboards, you asked about digits in a base and not numbers. This becomes clear if you describe the various bases.

• Binary is 0-1
• Octal is 0-7
• Decimal is 0-9
• Hexadecimal is 0-F

If you sort zero at the end, you’d need to spell out the digits or label them all as 1-0, which isn’t very descriptive.

Mind you, “zero-first ordering of digits” is not a fundamental rule, since the glyphs only have a need to be sorted when they stand for a numerical value . And if you used a phrase like “first X digits” without noting a range the omission would be a composition error.