Yellowstone County · Montana
Billings, MT demographics
Population, income and the local tax burden that sits on top of them — sourced from the Census Bureau and the Montana Department of Revenue.
Quick answer
Billings, MT has a population of 120,948 and a median household income of $66,222 — about $5,519 a month before tax. That ranks 54 of 94 covered metros by income and 87 of 94 by population.
Population
120,948
City limits, ACS 5-year
Median household income
$66,222
ACS 5-year estimate
Combined sales tax
0%
Montana + local
Income rank
#54
of 94 covered metros
Estimated annual sales tax on a median household
A Billings household at the median income of $66,222 spending roughly a quarter of pre-tax income on taxable retail goods would pay about $0 a year in sales tax at 0%. This is an illustration, not a filing figure: the taxable share of spending varies with household composition, and Montana exempts or discounts several categories. Montana has no general sales tax, so Billings retail is untaxed — resort communities like Whitefish and Big Sky are the exception with local resort taxes.
Method: median household income × 25% taxable share × combined rate. The 25% share is a rough national benchmark from the BLS Consumer Expenditure Survey, not a Billings-specific measurement.
Sources
What each figure on this page comes from.
- Source: US Census Bureau, American Community Survey 5-year estimates
- Source: Montana Department of Revenue rate tables · rates as published for 2026