Income needed to buy a home
St. Mary's County, MD
$144,551
a year in household income to buy the typical St. Mary's County home with 10% down.
The monthly math
Typical home value$435,173
Down payment (10%)$43,517
Loan$391,656
Principal and interest (7.40%)$2,712/mo
Property tax (0.77% a year)$280/mo
Homeowners insurance (estimate)$218/mo
Mortgage insurance$163/mo
Total monthly cost$3,373/mo
Income needed keeps housing at 28% of gross income, the lender rule of thumb.
What locals earn
A stretch
The typical household here earns $119,446 a year, 83% of what it takes.
In Maryland
St. Mary's County ranks #14 of 24 for the income a home takes, from least to most.
Easiest to afford in Maryland
| County | Typical home | Income needed |
|---|---|---|
| Allegany County | $158,340 | $53,568 |
| Baltimore City | $183,320 | $64,828 |
| Somerset County | $211,844 | $69,846 |
| Dorchester County | $271,430 | $90,781 |
| Wicomico County | $274,639 | $91,148 |
Typical home value from the Zillow Home Value Index, August 2026. Rate is the Freddie Mac 30-year average for Oct 8, 2026. Property tax rate is total taxes paid divided by total home value in the county (U.S. Census, ACS 2020-2024). How it works.