Montana · sequential passenger map
Montana license-plate format
Montana passenger plates keep a county number, five digits, and a letter suffix. In this atlas the pattern string uses A for a letter slot and 9 for a digit slot. Other characters are separators that appear on the metal but do not enlarge the combination space.
- Pattern
- 9-99999A
- Classes
- 1 letter + 6 digits
- Alphabet size
- 26
- Skipped letters
- none modelled
- Combination count
- 26,000,000
- Model year
- 2010
How the map works
Each A slot independently takes one glyph from ABCDEFGHIJKLMNOPQRSTUVWXYZ. Each 9 slot takes 0–9. The product of those bases is 26,000,000 — the size of the sequential space taught here. Hyphens, spaces and dots in 9-99999A are display only.
Big Sky plates still advertise county of issue in the leading number. The trailing letter expanded the numeric run.
Before this map, Montana used county-number plus five digits. Optional graphics (universities, military, environmental) can look nothing like the sequential passenger die and are not counted in the 26,000,000 figure.
A three-letter prefix such as SPR is not Montana’s passenger map.
Generated versus issued
A string that fits 9-99999A is in-class. It is not automatically an issued plate. Series can skip blocks, retire numbers, or reserve low digits. This essay never queries a motor-vehicle file. See also generated vs issued.