A+
5%
Overall NAT. AVG.
4%
Groceries NAT. AVG.
7%
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 Arnold Missouri National
Cost of living9590100
Groceries9696100
Health care9797100
Housing9377100
Transportation9896100
Utilities9995100
Lifestyle & Entertainment9295100
Household Items9697100
Education & Childcare9695100
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An Overview of Cost of Living in Arnold, MO

Getting a feel for the cost of living in Arnold is essential for anyone planning to relocate, as it empowers them to make informed financial decisions, secure a comfortable lifestyle and maintain financial stability in their new environment. The cost of living in Arnold is 95, which is 5% lower than the national average. Relocating individuals may need to adjust their savings and investment strategies based on the cost of living in the new location. It influences decisions about retirement planning, investments and financial goals.

The cost of living in Arnold aligns closely with the national average when compared to other cities across the nation. Everyday essentials such as groceries, household expenses, health care and utility bills are priced at a level consistent with the average in similar urban areas. Arnold residents can anticipate that their daily expenses won't be significantly higher than those in an average city, ensuring that the cost of living remains manageable.

Is Arnold Affordable?

Is Arnold an affordable place to live? It's a good question and one that you might want to ask when considering any new city, as affordability can play a huge role in the decision making process. The cost of living index (which we covered above), as well as housing costs and income levels play a vital role in determining the affordability of an area. The median home price in Arnold is 9.8% lower than the national average, while the average monthly rent prices are 0.6% lower than average. The affordability of any location can also be influenced by median income levels. Arnold has a median household income of $95,401, which is 17.3% higher than the national average.

What Factors can Influence the Cost of Living in Arnold?

Subsidies: Certain cities or states may implement government subsidies or assistance programs with the goal of alleviating the cost of living pressures on their residents. These programs encompass a broad spectrum of support mechanisms, including Medicare, Medicaid, housing subsidies, low-income home energy assistance programs, school lunch programs, supplemental nutrition assistance programs, student loans, electric vehicle tax credits, affordable care act subsidies and farming subsidies. Areas offering fewer subsidies may experience a rise in their cost of living.

Groceries: Grocery expenditures have undergone notable escalation over the last 2-3 years. In some markets, the cost of food products has surged by more than 20%, while others have experienced only modest increments. These fluctuations in food costs can have a significant impact on the overall cost of living in any region. In Arnold, the groceries index registers 3.7% lower than the national average.

Taxes: Cities that enforce higher taxes, covering both sales taxes and income taxes, can be a factor contributing to a higher cost of living. Paying more in taxes for everyday essentials like clothing and food inevitably leads to higher expenses. A higher income tax rate can further contribute to an overall elevated cost of living. In Arnold, the baseline sales tax rate begins at 4.225%, and income tax rates start at 2%.

Where is the Data From?

The cost of living estimates displayed for Arnold are modeled using a U.S. average baseline of 100, helping provide a useful comparison of local living expenses. Housing calculations include U.S. Census home price and rental data, while all other values are AI-assisted estimates based on regional cost patterns, climate, transportation, and everyday spending expectations. These values are intended for directional comparisons across cities.

Cost Of Living Quick Facts

  • The cost of living in Arnold is 5% higher than the Missouri average
  • The cost of living in Arnold is 5% lower than the national average
  • Arnold housing is 7% 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

Most Affordable Places to Live in and Around Arnold

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Compare Arnold, MO Cost of Living

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      Median Income & Debt-To-Income Ratio

      Median Income Per Year Per Month Max Budget (28% DTI) Max Budget (36% DTI)
      Owners$105,891$8,824$2,471$3,177
      Renters$65,201$5,433$1,521$1,956
      A good way to judge both the affordability of the housing and the cost of living in Arnold is by simply calculating the maximum that should be spent on housing, otherwise known as the debt-to-income ratio (DTI). The plan is to avoid spending more than 28 percent of the gross income on costs that pertain to housing and no more than 36 percent on all expenses and debts. Arnold has a median income of about $105,891 for people who own homes. Based on that number, a maximum of $2,471 should be spent on expenses related to housing. Renters have a slightly different median income, which is $65,201. Based on this average, renters should spend no more than $1,521 on all rental costs if they want to maintain a non-impoverished standard of living.

      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.
      Peaceful Village, MO956931.1%
      East St. Louis, IL27,0337722.5%
      Alorton, IL2,1497822.3%
      East Carondelet, IL3307822.2%
      Centreville, IL5,0987822.0%
      Arnold, MO21,866954.7%

      Cities with similar population

      City Population Cost of Living Index National Avg.
      Fort St. John, BC21,858n/a 
      Milwaukie, OR21,85312525.0%
      La Porte, IN21,8818712.8%
      Sapulpa, OK21,8439010.3%
      Sanford, ME21,8411033.4%
      Arnold, MO21,866954.7%
      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.