Monthly estimate = 1BR rent + electricity + gas
A one-person monthly baseline (1BR rent plus typical utilities) runs $960 in Bismarck, ND versus $970 in Rapid City, SD. Overall, Bismarck, ND is roughly 1% cheaper to live in day-to-day than Rapid City, SD, driven mainly by electricity costs.
Median household income is $77,608 in Bismarck, ND and $65,712 in Rapid City, SD — about 15% higher in Bismarck, ND. North Dakota has a top state income tax rate of 2.50% and a 5% state sales tax; South Dakota has no state income tax and a 4.2% state sales tax.
Rent
Buying a Home
Income
People & Lifestyle
Crime (per 100k/yr)
FBI Crime Data Explorer. Offenses per 100,000 residents per year; agency reporting practices vary, so this is approximate.
Climate
Gas
Area: Midwest (PADD 2) vs Midwest (PADD 2).
Utilities
Residential, state-level averages (EIA). MCF = 1,000 cubic feet.
Groceries
Average prices — Midwest vs Midwest (BLS). Regional where available, otherwise U.S. average.
State Taxes
Bismarck vs Rapid City — FAQ
- Is it cheaper to live in Bismarck or Rapid City?
- Bismarck, ND is cheaper. Its monthly baseline of $960 (1BR rent + utilities) runs about 1% below Rapid City, SD's $970, mainly because of electricity costs.
- How much more do you need to earn to live in Bismarck than in Rapid City?
- To keep rent near the recommended 30% of gross income, you'd want to earn roughly $32,000 a year in Bismarck versus $32,000 in Rapid City.
- Which has lower taxes, Bismarck or Rapid City?
- Bismarck is taxed under North Dakota's rules (a top state income tax rate of 2.50% and a 5% state sales tax); Rapid City under South Dakota's (no state income tax and a 4.2% state sales tax).
Sources: US Census Bureau, ACS 5-Year (rent, income, home value, demographics); NOAA Climate Normals 1981–2010 (climate); EIA weekly retail (gas); Tax Foundation 2026 (state taxes).