Mortgage Rates in Watertown, South Dakota — March 2026
Updated March 2026 | Based on Watertown market data and regional lending conditions
Watertown is a growing city in South Dakota with a population of 22,655. The current 30-year fixed mortgage rate in Watertown is 6.73%, which is 0.08% above the national average. With a median home price of $235,000 and a 20% down payment of $47,000, homebuyers can expect a monthly principal and interest payment of approximately $1,217.
Current Mortgage Rates in Watertown, SD
Below are the current average mortgage rates available in the Watertown area as of March 2026. Rates vary by lender, credit score, and loan-to-value ratio. Use our free calculator above to see your personalized estimate.
| Loan Type | Rate | National Avg | Difference |
|---|---|---|---|
| 30-Year Fixed | 6.73% | 6.65% | +0.08% |
| 15-Year Fixed | 5.97% | 5.89% | +0.08% |
| 5/1 ARM | 6.23% | 6.15% | +0.08% |
| FHA | 6.33% | 6.25% | +0.08% |
| VA | 6.13% | 6.05% | +0.08% |
| Jumbo | 6.93% | 6.85% | +0.08% |
Watertown Housing Market Overview
The Watertown housing market offers relatively affordable housing compared to many major cities. The median household income in Watertown is $48,250, and the cost of living index is 85.5 (national average = 100). Based on the 28% affordability rule, you would need an income of approximately $62,400 to comfortably afford the median-priced home in Watertown, which exceeds the current median household income.
Monthly Payment Breakdown for Watertown
Based on the median home price of $235,000 with 20% down ($47,000), here is what you can expect to pay monthly in Watertown:
15-Year vs. 30-Year Mortgage in Watertown
Choosing a 15-year mortgage in Watertown at 5.97% instead of a 30-year at 6.73% would save you $153,180 in total interest over the life of the loan. However, your monthly payment would be $1,583 instead of $1,217 — an increase of $366 per month.
Calculate Your Watertown Mortgage Payment
Use our free calculator to get a personalized estimate based on your loan amount, interest rate, and term.
Open Free CalculatorFrequently Asked Questions About Mortgages in Watertown
What are the current mortgage rates in Watertown, SD?
As of March 2026, the average 30-year fixed mortgage rate in Watertown, South Dakota is 6.73%, while the 15-year fixed rate is 5.97%. FHA loans average 6.33% and VA loans 6.13%. These rates are 0.08% above the national average of 6.65%.
How much is a monthly mortgage payment in Watertown?
Based on the median home price of $235,000 with 20% down, the estimated monthly mortgage payment in Watertown is $1,217 for principal and interest. Including property taxes of $239/month, the total monthly housing cost is approximately $1,456.
What income do I need to buy a home in Watertown?
Using the 28% rule, you would need an annual income of approximately $62,400 to afford the median-priced home in Watertown at $235,000. The median household income in Watertown is $48,250. This means most households would need to either earn above the median or consider homes below $235,000.
Is Watertown a good place to buy a home in 2026?
Watertown offers a below-average cost of living with a cost of living index of 85.5 (national average = 100). The property tax rate in South Dakota is 1.22%, which is near the national average. Watertown has a population of 22,655 and offers a very affordable lifestyle.
Mortgage Rates in Other South Dakota Cities
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Last updated: March 2026. Rates are approximate averages based on regional lending data for the Watertown, South Dakota area. Individual rates may vary by lender, credit score, loan amount, and other factors. Use our free calculator for a personalized estimate.