Format guide
Montana address and ZIP format
Montana uses MT. Keep the state abbreviation with the city and ZIP line; place street and any optional unit information before it. The data on this page is synthetic and is not a residence or mail-receiving address.
Postal codes
MT ZIP codes commonly contain five digits. Keeping city, state, and ZIP as separate fields reduces parsing errors and makes form testing more reliable.
Sales-tax note
Sales-tax note: Montana has no statewide general sales tax; other taxes follow official sources. Samples here are for format testing only—see the US tax-free state hub.
How to use test data
In development you can use these samples to check field length, line breaks, international characters, and responsive layouts. For payment, identity, logistics, or compliance flows, use official sandbox data from your provider—do not submit these samples to live systems.