What is the cost of living in Arnold, MO?
According to the most recent data on the cost of living, Arnold has an overall cost of living index of 93, which is 0.9x lower than the national index of 100.
Compared to Missouri, Arnold has a cost of living index that's 1.0x higher than Missouri's index of 90.
The standard of living in Arnold ranks as #74 most affordable out of the 144 places we measured in Missouri. By definition, that implies Arnold ranks as the #70 most expensive place in the Show Me State.
For more reading on life in Arnold, check out:
Arnold Cost Of Living Vs. Missouri
Six factors go into calculating the cost of living index in Arnold. Here is how it fares on each of the criteria:
The Services index in Arnold is 94.
The Groceries index in Arnold is 98.
The Health index in Arnold is 95.
The Housing index in Arnold is 100.
The Transportation index in Arnold is 100.
The Utilities index in Arnold is 93.
| Living Expense | Arnold | Missouri | National Average |
|---|---|---|---|
| Overall | 93 | 90 | 100 |
| Services | 94 | 97 | 100 |
| Groceries | 98 | 98 | 100 |
| Health | 95 | 76 | 100 |
| Housing | 100 | 95 | 100 |
| Transportation | 100 | 94 | 100 |
| Utilities | 93 | 96 | 100 |
Arnold 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 Arnold Get matched →Source: Cost-of-living index 2026, normalized to US average = 100
Arnold, 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 Arnold is $273,572.
The Median Rent in Arnold is $1,112.
The Median Income in Arnold is $78,370.
The Home Value To Income in Arnold is 3.5x.
The Rent To Monthly Income in Arnold is 0.17x.
Arnold, MO Costs By Category
Detailed Arnold Services costs vs. Missouri
Detailed Arnold Groceries costs vs. Missouri
Detailed Arnold Health costs vs. Missouri
Detailed Arnold Transportation costs vs. Missouri
Arnold SnackAbility
Cost Of Living In Cities Around Arnold
The cost of living varies in the cities and towns around Arnold. Here's a quick look at the cost of living in the most populous nearby places:
Chesterfield, MO has a cost of living index of 121, 1.3x Arnold.
Oakville, MO has a cost of living index of 103, 1.1x Arnold.
Wildwood, MO has a cost of living index of 122, 1.3x Arnold.
| City | Population | Cost Of Living | Vs. Arnold |
|---|---|---|---|
| Chesterfield, MO | 49,574 | 121 | 1.3x |
| Oakville, MO | 35,333 | 103 | 1.1x |
| Wildwood, MO | 35,133 | 122 | 1.3x |
| Ballwin, MO | 31,279 | 109 | 1.2x |
| Mehlville, MO | 29,805 | 94 | 1.0x |
| Kirkwood, MO | 29,363 | 117 | 1.3x |
| Webster Groves, MO | 23,712 | 117 | 1.3x |
| Concord, MO | 18,368 | 104 | 1.1x |
| Town and Country, MO | 11,607 | 168 | 1.8x |
| Waterloo, IL | 11,129 | 99 | 1.1x |
