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Gas Cost Calculator for Rapid City, SD
Local data pre-filled
Gas prices in Rapid City, SD average roughly $3.26/gallon, adjusted for the local cost of living index of 93. Calculate your monthly and annual fuel costs based on your commute in Rapid City.
Data as of · Sources: Zillow, Census ACS, Tax Foundation, Freddie Mac
South Dakota Financial Snapshot (2026) — Gas Cost Calculator
Cost-of-living index scales typical utility spend for the gas cost calculator in South Dakota.
How the Gas Cost Calculator Math Works Under South Dakota Law
The Gas Cost Calculator runs a well-known formula (principal × rate, discounted cash flow, amortization, or equivalent) client-side and layers on South Dakota's tax and cost-of-living inputs. State-specific numbers — brackets, exemptions, and averages — come from public federal / state datasets cited in the sources section.
Local context: Rapid City, SD
Housing economics in Rapid City, SD. The median home value runs 3.3% above the U.S. baseline for Rapid City, SD is $369,930 per Zillow's home-value index. Median rent runs $1,352 a month per Zillow ZORI, cheaper than the national $1,850 baseline. Effective property tax sits at 1.20% of assessed value, meaningfully higher than the 0.99% national average tracked by the Tax Foundation.
Income and tax climate. South Dakota's top marginal state income tax bracket lands at 0.00% — one of nine states that levies no broad-based income tax, shifting the revenue burden onto sales, property, and severance levies. BEA's Regional Price Parity scores Rapid City, SD at 93.0 (national = 100), meaning a dollar in Rapid City, SD buys 108¢ — more goods and services than the same dollar nationally.
Local context as of 2026-04-19.
Rapid City versus the U.S. baseline
| Metric | Rapid City, SD | U.S. baseline | Difference |
|---|---|---|---|
| Median home value[zillow] | $369,930 | $358,000 | 3.3% |
| Median monthly rent[zillow] | $1,352 | $1,850 | -26.9% |
| Property tax (effective)[tax-foundation] | 1.20% | 0.99% | 21.2% |
| State top marginal income tax[tax-foundation] | None | ~4.08% (volume-weighted) | −4.08 pp |
| State cost-of-living index[bea-rpp] | 93.0 | 100.0 | -7.0 pts |
How to use the Gas Cost Calculator
Walk through using the Gas Cost Calculator with Rapid City, SD-specific defaults pre-loaded from primary sources.
- Enter your Rapid City numbersFill in the gas cost inputs. Defaults reflect Rapid City, SD 2026: median home $369,930, median rent $1,352/mo, 1.20% effective property tax.
- Apply the local 2026 inputsThe median home value in Rapid City is $369,930 (Zillow ZHVI), with median monthly rent running $1,352/mo.
- Compare against Rapid City contextMonthly PITI on the $369,930 median home in Rapid City is ~$2,694/mo — vs a $1,352/mo median rent.
How South Dakota Compares to Neighboring States
| State | Median home | Top inc tax | Prop tax rate | RPP (US=100) |
|---|---|---|---|---|
| South Dakota (this page) | $275,000 | None | 1.24% | 88.1 |
| check Iowa | $215,000 | 3.80% | 1.50% | 88.8 |
| check Minnesota | $335,000 | 9.85% | 1.12% | 98.3 |
| check Montana | $460,000 | 5.90% | 0.83% | 91.0 |
| Nebraska equivalent | $265,000 | 5.20% | 1.73% | 90.3 |
Sources: Zillow ZHVI[1], state Departments of Revenue / Tax Foundation[2], Tax Foundation property taxes[3], BEA Regional Price Parities[4].
What Changes Your Result in South Dakota
- South Dakota cost-of-living drag:Line-item costs in South Dakota deviate from the US mean by whatever the BEA all-items RPP deviates from 100. Weight your budget toward the state average rather than the national average.
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- South Dakota ev vs gas numbers for 2026 — gas cost is one input to EV vs gas.
How Rapid City Compares to the National Average
Understanding how Rapid City stacks up helps you calibrate your financial planning.
| Metric | Rapid City, SD | US Average | Difference |
|---|---|---|---|
| Median Home Price | $369,930 | $420,800 | -12.1% |
| Median Monthly Rent | $1,352 | $1,713 | -21.1% |
| Median Household Income | $71,985 | $74,580 | -3.5% |
| Property Tax Rate | 1.20% | 1.10% | +9.1% |
| Cost of Living Index | 93 | 100 | -7.0% |
Sources: U.S. Census Bureau, BLS, Zillow, NAR (2024–2025). Green = favorable for residents; red = less favorable.
Rapid City Financial Snapshot
- Population (Metro)
- 150,000
- Unemployment
- 2.8%
- Avg Commute
- 17 min
- Median Age
- 37.2
- Price-to-Rent Ratio
- 22.8x
- Annual Property Tax
- $4,439
More Financial Calculators for Rapid City, SD
Gas Cost Calculator in Other South Dakota Cities
Frequently Asked Questions — Rapid City
- Can median-income households afford the median home in Rapid City?
- With a ~$2,694 monthly PITI and $71,985 median income, housing would consume ~44.9% of gross annual income. Qualifying under the 28% DTI rule requires ~$115,457 in annual income. Educational reference only.
- Is it better to rent or buy in Rapid City?
- Rapid City's price-to-rent ratio (22.8x) tilts toward renting — above 20x, buying is generally expensive relative to renting.
- What is the annual property tax bill on the median home in Rapid City?
- Approximately $4,439/yr at the 1.20% effective rate on the $369,930 median home. The national average effective rate is 1.07%.
- What share of median income goes to rent in Rapid City?
- The $1,352/mo median rent represents 22.5% of the $71,985 median household income. The recommended housing cost threshold is 30%; Rapid City falls within that guideline. Educational reference only.
- How much does commuting cost in Rapid City?
- Average commute time in Rapid City is 17 minutes per ACS. Estimated annual commute cost runs about $2,961. Educational reference only.
- How does the cost of living in Rapid City compare to the national average?
- Rapid City's BEA RPP index is 93, 7% below the national baseline of 100. For a household earning the national median income of $77,540, this translates to ~$5,428/yr in purchasing power difference. Educational reference only.
- What is the median home price in Rapid City, SD?
- The median home price in Rapid City is $369,930 as of 2025–2026.
- What is the average rent in Rapid City?
- The median monthly rent in Rapid City, SD is $1,352.
- Does the gas cost replace professional advice?
- No. This calculator gives educational estimates using public Rapid City data and standard formulas. It is not personalized tax, legal, or investment advice. Consult a licensed professional for decisions with material consequences.
How we compute this — methodology
The Rapid City page uses local median home price ($369,930), median rent ($1,352/mo), and property tax rate (1.20%) alongside the calculator's client-side formula. Calculations run in your browser — no inputs are sent to a server.
Known limits: ZIP-level variance within Rapid City can be substantial — the figures shown are city-wide medians. For a precise property tax quote, consult your county assessor.
Sources
- Zillow Research — ZHVI (Zillow Home Value Index) + ZORI (Zillow Observed Rent Index), city-level. zillow.com/research/data. Retrieved 2026-04-19.
- U.S. Census Bureau — American Community Survey (ACS) 5-year estimates for median household income and population. census.gov/programs-surveys/acs.
- CalcFi state financial context — tips + first-time homebuyer programs compiled from each state's Housing Finance Authority (HFA) public pages. See
src/data/state-financial-context.ts. - Tax Foundation — state property tax effective rates and state/local sales tax rates. taxfoundation.org.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — weekly national mortgage rate averages used by mortgage-related calculators. freddiemac.com/pmms.
- U.S. Energy Information Administration — residential electricity / natural gas / gasoline — www.eia.gov. Retrieved 2026-04-19.
- FRED (Federal Reserve Economic Data) — real median household income, unemployment, HPI, LFPR per state — fred.stlouisfed.org. Retrieved 2026-04-19.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — weekly national mortgage rates — www.freddiemac.com/pmms. Retrieved 2026-04-19.
- NAIC Dwelling Fire, Homeowners Owners, and Homeowners Tenants Insurance Report — content.naic.org/article/homeowners-insurance-report. Retrieved 2026-04-19.
- State Departments of Revenue — official bracket + deduction publications (one primary URL per state; linked in the brackets table below) — taxfoundation.org/data/all/state/state-income-tax-rates. Retrieved 2026-04-19.
- Bureau of Economic Analysis — Regional Price Parities by State — www.bea.gov/data/prices-inflation/regional-price-parities-state-and-metro-area. Retrieved 2026-04-19.
- U.S. Department of Labor — State Minimum Wage Laws — www.dol.gov/agencies/whd/minimum-wage/state. Retrieved 2026-04-19.
- BLS Occupational Employment and Wage Statistics (OEWS) — state-level occupational wages — www.bls.gov/oes. Retrieved 2026-04-19.
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National reference: Gas Cost Calculator