What is the cost of living in St. Peters, MO?
According to the most recent data on the cost of living, St. Peters has an overall cost of living index of 97, which is 1.0x lower than the national index of 100.
Compared to Missouri, St. Peters has a cost of living index that's 1.1x higher than Missouri's index of 90.
The standard of living in St. Peters ranks as #95 most affordable out of the 144 places we measured in Missouri. By definition, that implies St. Peters ranks as the #49 most expensive place in the Show Me State.
For more reading on life in St. Peters, check out:
St. Peters Cost Of Living Vs. Missouri
Six factors go into calculating the cost of living index in St. Peters. Here is how it fares on each of the criteria:
The Services index in St. Peters is 99.
The Groceries index in St. Peters is 92.
The Health index in St. Peters is 106.
The Housing index in St. Peters is 101.
The Transportation index in St. Peters is 93.
The Utilities index in St. Peters is 91.
| Living Expense | St. Peters | Missouri | National Average |
|---|---|---|---|
| Overall | 97 | 90 | 100 |
| Services | 99 | 97 | 100 |
| Groceries | 92 | 98 | 100 |
| Health | 106 | 76 | 100 |
| Housing | 101 | 95 | 100 |
| Transportation | 93 | 94 | 100 |
| Utilities | 91 | 96 | 100 |
St. Peters Cost Of Living Compared To Missouri Averages
Index where 100 = national average. Source: cost-of-living index 2026.
For more reading on cost of living around Missouri, check out:
Protect your home budget Compare home warranties in St. Peters Get matched →Source: Cost-of-living index 2026, normalized to US average = 100
St. Peters, MO Housing Cost Breakdown
Housing swings affordability the most between places in Missouri, so we broke down housing costs into more detail. Home and income data comes from the most recent US Census ACS 2020-2024. The key points are:
The Median Home Value in St. Peters is $318,220.
The Median Rent in St. Peters is $1,321.
The Median Income in St. Peters is $91,637.
The Home Value To Income in St. Peters is 3.5x.
The Rent To Monthly Income in St. Peters is 0.17x.
| Statistic | St. Peters | Missouri | United States |
|---|---|---|---|
| Median Home Value | $318,220 | $263,040 | $332,700 |
| Median Rent | $1,321 | $1,033 | $1,413 |
| Median Income | $91,637 | $70,702 | $80,734 |
| Home Value To Income | 3.5x | 3.7x | 4.1x |
| Rent To Monthly Income | 0.17x | 0.18x | 0.21x |
St. Peters, MO Costs By Category
Detailed St. Peters Services costs vs. Missouri
| Item | St. Peters | Missouri |
|---|---|---|
| Shampoo | $1.11 | $1.28 |
| Movie | $11.28 | $12.13 |
| Bowling | $16.92 | $18 |
| Haircut | $21.19 | $24.26 |
| Beauty Salon | $40.57 | $45.56 |
Detailed St. Peters Groceries costs vs. Missouri
| Item | St. Peters | Missouri |
|---|---|---|
| Ground Beef | $6.4 | $5.84 |
| Fried Chicken | $1.36 | $1.57 |
| Milk | $4.5 | $4.67 |
| Potatoes | $5.28 | $4.93 |
| Pizza | $10.84 | $12.09 |
| Beer | $9.47 | $10.41 |
| Toothpaste | $3.75 | $3.7 |
Detailed St. Peters Health costs vs. Missouri
| Item | St. Peters | Missouri |
|---|---|---|
| Optometrist | $125.72 | $125.68 |
| Doctor | $124.51 | $135.78 |
| Dentist | $100.78 | $113.29 |
Detailed St. Peters Transportation costs vs. Missouri
| Item | St. Peters | Missouri |
|---|---|---|
| Gasoline | $3.2 | $3.46 |
| Tire Balancing | $50.0 | $59.92 |
Detailed St. Peters Utilities costs vs. Missouri
| Item | St. Peters | Missouri |
|---|---|---|
| All Electricity | $133.84 | $193.99 |
| Phone | $188.69 | $192.25 |
St. Peters SnackAbility
Cost Of Living In Cities Around St. Peters
The cost of living varies in the cities and towns around St. Peters. Here's a quick look at the cost of living in the most populous nearby places:
O'Fallon, MO has a cost of living index of 105, 1.1x St. Peters.
St. Charles, MO has a cost of living index of 102, 1.1x St. Peters.
Chesterfield, MO has a cost of living index of 121, 1.2x St. Peters.
| City | Population | Cost Of Living | Vs. St. Peters |
|---|---|---|---|
| O'Fallon, MO | 93,801 | 105 | 1.1x |
| St. Charles, MO | 71,508 | 102 | 1.1x |
| Chesterfield, MO | 49,574 | 121 | 1.2x |
| Wildwood, MO | 35,133 | 122 | 1.3x |
| Ballwin, MO | 31,279 | 109 | 1.1x |
| Kirkwood, MO | 29,363 | 117 | 1.2x |
| Maryland Heights, MO | 27,880 | 98 | 1.0x |
| Old Jamestown, MO | 20,651 | 102 | 1.1x |
| Dardenne Prairie, MO | 13,503 | 115 | 1.2x |
| Town and Country, MO | 11,607 | 168 | 1.7x |
