The typical owner-occupied home in Groton is worth about $190,600, 26% below the South Dakota median of $257,400 and 43% below the national median of $332,700. Owners pay a median $2,631 a year in property taxes, about 1.38% of their home's value, higher than the South Dakota rate of 1.06%. The median household earns $89,861 a year, so the median home costs 2.1 times the median income (3.4 times for South Dakota). 73% of occupied homes here are lived in by their owners, and 68% of those owners still have a mortgage.
Groton at a glance
| Groton | South Dakota | U.S. | |
|---|---|---|---|
| Median home value | $190,600 | $257,400 | $332,700 |
| Median property tax paid per year | $2,631 | $2,724 | $3,119 |
| Property tax as a share of value | 1.38% | 1.06% | 0.94% |
| Median household income | $89,861 | $75,081 | $80,734 |
| Homes lived in by their owners | 73% | 69% | 65% |
| Owner homes with a mortgage | 68% | 54% | 61% |
| Median monthly costs, owners with a mortgage | $1,516 | $1,680 | $1,963 |
| Those costs as a share of the owners' income | 18.6% | 20.4% | 21.0% |
| Median rent | $981 | $946 | $1,413 |
| Rent as a share of renters' income | 23.8% | 25.9% | 30.6% |
| Median year homes were built | 1975 | 1980 | 1980 |
| Vacant homes | 9.9% | 10.5% | 10.1% |
| Population | 1,691 | 907,428 | 334,922,499 |
What a typical home costs per month in Groton
At this week's average 30-year rate of 7.11%, buying the median Groton home of $190,600 with 20% down costs about $1,324 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $1,642, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $56,758 for the 20%-down payment. That payment is 18% of the median Groton household income of $89,861; at that income and 20% down, the 28% guideline points to a home of about $302,000.
The median rent here is $981 a month, so owning the median home costs about $343 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $38,120 |
|---|---|
| Loan amount | $152,480 |
| Principal and interest | $1,026 |
| Property taxes (1.38% a year) | $219 |
| Homeowners insurance (our estimate, 0.5% a year) | $79 |
| PMI | $0 |
| Total per month | $1,324 |
Change the numbers in the calculator
| Down payment | $6,671 |
|---|---|
| Loan amount | $187,148 |
| Principal and interest | $1,259 |
| Property taxes (1.38% a year) | $219 |
| Homeowners insurance (our estimate, 0.5% a year) | $79 |
| FHA mortgage insurance | $84 |
| Total per month | $1,642 |
Change the numbers in the calculator
Questions about home buying in Groton
What is the median home value in Groton?
About $190,600 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in Groton?
Homeowners pay a median $2,631 a year, which is about 1.38% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in Groton?
For the median home with 20% down at 7.11%, the payment is about $1,324 a month. Keeping that under 28% of gross income takes about $56,758 a year.
More about Groton
- Mortgage Refinance in Groton
- Debt Relief in Groton
- Home Equity Loans in Groton
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data