Rapid City 4plexes: Buy a Fourplex and House Hack in Rapid City
Rapid City, South Dakota's second-largest city, is home to about 80,589 people, with a median household income of $75,467, a median gross rent of $1,210 a month, and a typical home value of $360,913. Known as the gateway to the Black Hills, it pairs a tourism economy with Ellsworth Air Force Base — two demand drivers that behave very differently across the seasons.
Rapid City by the Numbers
Rapid City sits on the eastern edge of the Black Hills, where the plains meet the mountains, and its economy mixes tourism, health care, and the military. About 80,589 people live here, households earn a median of $75,467, and the typical home value is $360,913 — the highest in South Dakota in this batch. The $1,210 median gross rent is also the state's highest here, which helps a fourplex pencil out despite the higher prices.
| Population (Census Vintage 2025, July 1, 2025) | 80,589 |
|---|---|
| State capital | Pierre |
| Median household income (ACS 2024 1-year, B19013) | $75,467 |
| Households earning under $50,000 (ACS 2024 1-year, B19001) | 28.6% |
| Households earning $50,000 to $99,999 (ACS 2024 1-year, B19001) | 36.3% |
| Households earning $100,000 to $199,999 (ACS 2024 1-year, B19001) | 27.7% |
| Households earning $200,000 or more (ACS 2024 1-year, B19001) | 7.5% |
| Median gross rent (ACS 2024 1-year, B25064) | $1,210 per month |
| Median earnings, all workers 16 and older (ACS 2024 1-year, B20017) | $45,858 |
| Typical home value (ZHVI, September 2026) | $360,913 |
The income bands show a strong middle: 28.6% of households earn under $50,000, 36.3% earn $50,000 to $99,999, 27.7% earn $100,000 to $199,999, and 7.5% earn $200,000 or more, with individual median earnings of $45,858. The practical point for a buyer is that the middle band — the largest in this batch — is the tenant base: working households who want a decent place at a fair rent, not luxury finishes.
Put rent and value together: a year of rent at the median ($1,210 a month) is 4.02% of the typical home value ($360,913). Treat that as a rough gauge of the rent-to-price relationship in Rapid City, not as income — expenses, vacancies, and taxes all reduce what an owner actually keeps.
Sources: U.S. Census Bureau, American Community Survey 2024 1-year estimates (tables B19001, B25064, B20017); Zillow Research ZHVI, September 2026.
Buying a 4plex in Rapid City
Downtown Rapid City is known as the City of Presidents for the life-size bronze statues of past presidents on its street corners, and the downtown core holds older multi-unit buildings alongside shops and restaurants. The tourism season fills the city every summer, when visitors head to Mount Rushmore and the Black Hills, but a house hack must not be underwritten on summer demand — underwrite on twelve-month leases, and treat any seasonal premium as extra, not as the plan.
Ellsworth Air Force Base, east of the city, provides the steadier half of rental demand, and base personnel value the same things civilian tenants do: a sound building, fair rent, and a landlord who responds. Inspect for the usual Black Hills items — hail history, roof age, and winter readiness — and confirm the building's water source and sewer, since some areas outside the core developed on wells and septic systems.
Buyer Help and Loans in Rapid City
For a Rapid City fourplex, the Loan Types page lays out the six programs, and the ones that fit are FHA at 3.5% down on a 1-4 unit primary residence, conventional at 5% down on an owner-occupied 2-4 unit home, and VA with typically no down payment for eligible veterans. Base personnel should check VA eligibility first, and all buyers should confirm the loan limit for a 4-unit property at Rapid City prices.
HomeReady and Home Possible both cap income at 80% of the area median income and allow 5% down on a 2-4 unit property, and with 64.9% of Rapid City households under $100,000, many buyers qualify. Both are described on the Loan Types page; a lender should confirm the area cap for the property's location, since that figure — not the $75,467 city median — settles eligibility.
Living in Rapid City
The photo above shows downtown Rapid City, the commercial center of the Black Hills gateway city. The City of Presidents statues line the downtown corners, the Journey Museum tells the region's story, and Dinosaur Park watches over the city from its hilltop.
Living in a Rapid City fourplex means mountain weather, summer visitors, and a community that serves both. Keep the building ready for hail and snow, be a steady landlord through the quiet winters, and price from year-round comps. The tourism season is a bonus for the city; the house hack itself should stand on twelve-month tenants.