F
167%
Overall NAT. AVG.
25%
Goods & Services NAT. AVG.
511%
Housing NAT. AVG.
Date & Last Updated: This data reflects 2025 and was released from C2ER in January, 2026; this is the most current data available.
The cost of living index is based on a national average of 100. For example, if the cost of living is 90, then it is 10% lower than average. If the cost of living is 110, then it is 10% higher than average. The breakdown for each index is as follows: goods & services (33%), groceries (13%), health care (5%), housing (30%), transportation (9%) and utilities (10%). If the cost of living data was unavailable for this city, estimates based upon nearby cities were used.
Index Mercer Island Washington National
Cost of living267118100
Goods & Services125110100
Groceries111108100
Health care120109100
Housing611138100
Transportation134123100
Utilities10097100
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An Overview of Cost of Living in Mercer Island, WA

Understanding the cost of living in Mercer Island can help future residents assess whether their current financial situation aligns with the expenses they will encounter. It enables them to plan for potential changes in their budget and lifestyle. The Mercer Island cost of living index is 267, which is 167% higher than the national average. The cost of living index is calculated by taking into account multiple categories, which encompass both the cost of everyday expenditures and larger expenses as well.

If you value affordability in your search for a new place to live, Mercer Island may not be the most suitable option, as it stands out as one of the priciest areas in the entire United States. Only a small fraction of regions have a cost of living that is more than 20% higher than the national average, and regrettably, Mercer Island falls into this category, which may not align with your desire for an affordable place to call home.

When it comes to the cost of living in Mercer Island, housing costs are a real heavyweight, often hogging a significant chunk of your earnings. Sadly, in this area, housing expenses for both buying and renting were 511.5% more expensive compared to your average city. That means you'll be shelling out more for homes, rents, mortgage rates and insurance.

Recurring essentials like haircuts, toothpaste, and entertainment, from movies to gym sessions, can really add up in your budget and make up 33% of the cost of living index. In Mercer Island, you you will have to spend 24.6% more than average when compared to the typical prices for these items, making it a more expensive place to live.

The surge in grocery costs is indeed alarming, especially when groceries make up a large portion of your monthly expenditures. Over the past two years, there has been an inflation of over 10% in grocery prices. Unfortunately, Mercer Island does not fare better, with grocery expenses coming in at 11% higher than the national average.

What Do Locals Say About the Cost of Living in Mercer Island?

Nobody knows their city better than the people who actually live there. So, we asked 10 local residents how they would rate the cost of living in Mercer Island and this is how they responded. 10% of people said that the cost of living was affordable, with prices decreasing, while 90% of people said that the cost of living was very expensive and prices continue to rise.

Is Mercer Island Affordable?

Is Mercer Island 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 Mercer Island is 678.4% higher than the national average, while the average monthly rent prices are 122% higher than average. The affordability of any location can also be influenced by median income levels. Mercer Island has a median household income of $227,166, which is 179.3% higher than the national average.

What Factors can Influence the Cost of Living in Mercer Island?

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 Mercer Island, the baseline sales tax rate begins at 6.5%, and income tax rates start at 0%.

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 Mercer Island, the groceries index registers 11% higher than the national average.

Utilities: Like everything else, utilities costs can range significantly depending on factors like climate, energy sources available, location and even state regulations. Things like electricity, water, heating and waste disposal costs can be higher or lower, depending on the city or state. The utilities index in Mercer Island comes in at 0.2% higher than the national average.

Where is the Data From?

The cost of living in Mercer Island, presented above is derived from the C2ER cost of living index, offering a practical method for assessing living cost disparities in urban areas. Published quarterly, this index compiles data from more than 300 independent researchers, encompassing over 60 goods and services in 6 categories. The weightings assigned to cost variances are informed by government survey data tracking the expenditure patterns of professional and executive households. It should be noted that the C2ER index does not include data on sales or income tax rates, however, AreaVibes incorporates tax rates into the overall cost of living score for each area.

Cost Of Living Quick Facts

  • The cost of living in Mercer Island is 126% higher than the Washington average
  • The cost of living in Mercer Island is 167% higher than the national average
  • Mercer Island housing is 511% higher than the national average
  • Washington general sales tax is 27% higher than the national average
  • Washington state income tax is 100% lower than the national average

Most Affordable Places to Live in and Around Mercer Island

See all the best places to live around Mercer Island

Compare Mercer Island, WA Cost of Living

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      Salary Calculator

      This is how much you would need to earn in
      Price difference in compared to
      Cost of living index
      Goods & Services index
      Groceries index
      Health care index
      Housing index
      Transportation index
      Utilities index

      Median Income & Debt-To-Income Ratio

      Median Income Per Year Per Month Max Budget (28% DTI) Max Budget (36% DTI)
      Owners$324,121$27,010$7,562$9,725
      Renters$123,934$10,328$2,892$3,718
      A good indicator of the general affordability of housing in Mercer Island, WA, is the percentage of monthly income that should be spent on housing expenses, otherwise known as the debt-to-income ratio (DTI). Generally speaking, no more than 28 percent of your total gross income should be spent on your housing expenses and not more than 36 percent of your gross income on total expenses, including debts. In Mercer Island, the median monthly income is $324,121 for those who own their own homes. Under the standard rule, that income level would allow for $7,562 to be budgeted for housing expenses each month, at the most. Renters, on the other hand, earn about $123,934, per the median income in the area. That would allow for renters to spend up to $2,892 on monthly rental expenses.

      Washington Sales Tax

      State General Sales Tax With Max Surtax
      Washington 6.5% 10.4%

      Washington Income Tax

      State Income Tax (Low) Income Tax (High)
      Washington 0% 0%

      Goods & Services

      Item Mercer Island National avg. Difference
      Haircut $52.70$27.6290.8%
      Beauty Salon $90.63$51.1177.3%
      Toothpaste $3.99$4.092.5%
      Shampoo $1.49$1.543.4%
      Movie $16.66$12.8829.4%
      Yoga $25.75$19.6631.0%

      Groceries

      Item Mercer Island National avg. Difference
      Ground Beef $8.11$7.705.3%
      Fried Chicken $2.89$1.6673.9%
      Milk $4.89$4.733.3%
      Potatoes $4.43$5.2615.7%
      Pizza $15.74$12.7623.3%
      Beer $12.31$10.5516.7%

      Health Care

      Item Mercer Island National avg. Difference
      Optometrist $228.39$140.0663.1%
      Doctor $204.97$153.8233.3%
      Dentist $154.18$123.1525.2%
      Ibuprofen $12.60$11.737.4%
      Lipitor $19.72$23.6116.5%

      Housing

      Item Mercer Island National avg. Difference
      Home Price $2,542,404.00$326,622.00678.4%
      Avg. Mortgage Payment $5,300.43$2,480.25113.7%
      Apartment Rent $3,206.00$1,444.00122.0%

      Transportation

      Item Mercer Island National avg. Difference
      Gasoline $4.33$3.0641.8%
      Tire Balancing $76.04$65.2116.6%

      Utilities

      Item Mercer Island National avg. Difference
      All Electricity $211.87$220.123.7%
      Phone $209.52$195.717.1%
      Although the cost of living data is updated regularly, this cost of living information is to be used as estimates only as prices can change on an ongoing basis.

      Nearby cities with low cost of living

      City Population Cost of Living Index National Avg.
      Fairwood CDP (Spokane County), WA8,33111818.3%
      Tukwila, WA20,71013232.4%
      Manchester, WA6,24913635.6%
      Indianola, WA3,67813635.7%
      SeaTac, WA30,18613635.8%
      Mercer Island, WA26,374267167.3%

      Cities with similar population

      City Population Cost of Living Index National Avg.
      Lockport, IL26,3861088.2%
      Keystone, FL26,35913534.5%
      Fairland, MD26,40013434.4%
      Socastee, SC26,401973.1%
      Reedley, CA26,41711616.2%
      Mercer Island, WA26,374267167.3%
      Date & Last Updated: This data reflects 2025 and was released from C2ER in January, 2026; this is the most current data available.