Cost Of Living in St. Mary, MO

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16%

Overall NAT. AVG.

1%

Groceries NAT. AVG.

51%

Housing NAT. AVG.

Date & Last Updated: These cost of living estimates reflect 2026 modeled data using U.S. Census housing inputs and AI-assisted city-level pricing models.

The cost of living index is based on a national average of 100. For example, if the cost of living score is 90, then the estimated cost of living is 10% lower than the national average. If the score is 110, then the estimated cost of living is 10% higher than average. The overall index is calculated using weighted estimates across major everyday expense categories, including housing (30%), groceries (16%), transportation (12%), healthcare (10%), utilities (8%), lifestyle and entertainment (8%), household expenses (8%), and education and childcare (8%). All values are AI-assisted city-level estimates designed for directional comparisons.
Index	St. Mary	Missouri	National
Cost of living	84	90	100
Groceries	99	96	100
Health care	100	97	100
Housing	49	77	100
Transportation	100	96	100
Utilities	97	95	100
Lifestyle & Entertainment	96	95	100
Household Items	99	97	100
Education & Childcare	99	95	100

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Homes For Sale In St. Mary, MO

24944 State Route WW

Sainte Genevieve, MO

21050 Eatherton Rd

Saint Mary, MO

Cost Of Living Quick Facts

The cost of living in St. Mary is 7% lower than the Missouri average
The cost of living in St. Mary is 16% lower than the national average
St. Mary housing is 51% lower than the national average
Missouri general sales tax is 17% lower than the national average
Missouri state income tax is 23% lower than the national average

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Price difference in compared to

Cost of living index
Groceries index
Health care index
Housing index
Transportation index
Utilities index
Lifestyle index
Household index
Educare index

Median Income & Debt-To-Income Ratio

Median Income	Per Year	Per Month	Max Budget (28% DTI)	Max Budget (36% DTI)
Owners	$95,323	$7,944	$2,224	$2,860
Renters	$30,775	$2,565	$718	$923

Missouri Sales Tax

State	General Sales Tax	With Max Surtax
Missouri	4.225%	10.85%

Missouri Income Tax

State	Income Tax (Low)	Income Tax (High)
Missouri	2%	4.95%

Nearby cities with low cost of living

City	Population	Cost of Living Index	National Avg.
Weingarten, MO	149	96	3.6%
Lithium, MO	92	97	3.0%
Brewer, MO	484	97	3.0%
Rockwood, IL	26	78	21.9%
Evansville, IL	790	81	18.9%
St. Mary, MO	266	84	16.4%

Cities with similar population

City	Population	Cost of Living Index	National Avg.
Acampo, CA	266	115	14.9%
Keene, CA	266	144	44.1%
Yankee Hill, CA	266	119	18.8%
Peetz, CO	266	90	9.8%
Bovill, ID	266	90	10.1%
St. Mary, MO	266	84	16.4%