Total monthly cost of ownership
Cost to Own a Home in Johnston, South Carolina
A $100,000 home here costs
$904per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $514. The real number is $390 higher every month — 76% more than the payment most buyers budget for.
Where every dollar goes
Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.
Johnston against Edgefield County and South Carolina
| Measure | Johnston | Edgefield County |
|---|---|---|
| Median home value | $100,400 | $194,300 |
| Median property tax | $540 | $877 |
| Effective tax rate | 0.538% | 0.451% |
| Median gross rent | $803 | $854 |
| Population | 2,518 | 26,508 |
The weather behind that power bill
Johnston sits in Edgefield County, which averages a high of 94.1°F in its hottest month and a low of 35.3°F in its coldest, with 44.09" of precipitation a year and 31% of it in a single three-month stretch. That climate drives 2,361 cooling and 2,181 heating degree days, which is what sets the $145 electricity line above.
See the full climate breakdown for Edgefield County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Edgefield County
Full Edgefield County cost breakdown · Every county in South Carolina
Common questions
How much does it cost to own a home in Johnston?
A $100,000 home in Johnston, South Carolina costs approximately $904 per month with 20% down at 6.66%. That is $514 principal and interest, $45 property tax, $48 homeowners insurance, $213 utilities and $83 set aside for maintenance.
What is the property tax rate in Johnston?
Johnston has an effective property tax rate of 0.538%, based on a median home value of $100,400 and median real estate taxes of $540. That is higher than the Edgefield County average of 0.451%.
What is the average home price in Johnston?
The median owner-occupied home value in Johnston, South Carolina is $100,400, against $194,300 across Edgefield County.
Is it cheaper to rent or buy in Johnston?
Median gross rent in Johnston is $803 a month, against $904 to own the median home all in. Renting costs less month to month here, though renting builds no equity.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for Johnston — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for South Carolina.
- Electricity price — EIA Electric Power Monthly Table 5.6.A.
- Mortgage rate — Freddie Mac PMMS, refreshed weekly.
- Maintenance (1%/yr) and water and sewer ($68/mo) are national estimates. Every assumption above is editable.