Mercer Island, WA—98040
Real Estate Data & Market Trends
Key Metrics at a Glance
Home Price Trends — Mercer Island, WA
As of Aug '25, the median home price in Mercer Island, WA is $2,248,000, with a year-over-year change of 1.4%. This indicates that home prices in Mercer Island, WA are increasing. According to Zillow, the 1-year price projection is -0.2%, suggesting a relatively flat housing market in the next year.
Cost per Home Size
| Home Size | Median Home Value | YoY % Change |
|---|---|---|
1 Bed | $432,000 | -7.9% |
2 Bed | $732,000 | -3.4% |
3 Bed | $1,848,000 | 0.3% |
4 Bed | $2,389,000 | 0.9% |
| 5 Bed | $2,905,000 | 0.8% |
Rental Trends — Mercer Island, WA
As of Jul '25, the average rent in Mercer Island, WA is $4,510, with a year-over-year rent change of 1.6%. 1-bedroom units average $2,360 (4.0%); 2-bedroom units average $3,310 (27.3%); 3-bedroom units average $5,290 (-10.9%); 4-bedroom units average $7,040 (20.5%)
| Type | Median Rent | Average Rent |
|---|---|---|
| Average Rent | $4,200 | $4,510 |
| Studio Rent | $1,960 | $2,130 |
| 1 Bed Rent | $2,000 | $2,360 |
| 2 Bed Rent | $3,200 | $3,310 |
| 3 Bed Rent | $5,500 | $5,290 |
| 4 Bed Rent | $6,700 | $7,040 |
Property Listings — Mercer Island, WA
As of Aug '25 and according to Realtor.com, the median days on market for a home in Mercer Island, WA is 50. This is an increase of 34.0% from last year. This indicates that homes are sitting on the market longer than last year. The percentage of listed homes with a reduced price is 24.0%. This is a small percentage of inventory, suggesting little supply pressure on home prices.
| Metric | Zip Code Average | Year over Year % Change |
|---|---|---|
Median Listing Price | $3,080,000 | 9.0% |
Listing Count | 88 | N/A |
| Listings as % of Homes | 0.3% | N/A |
Days on Market | 50 | 34.0% |
Demographics — Mercer Island, WA
| Metric | Latest Census | YoY % Change |
|---|---|---|
Population | 25,300 | -0.8% |
% Under 18 | 22.1% | -6.8% |
| % Under 5 | N/A | N/A |
% Seniors | 21.0% | 2.9% |
% WFH | 35.7% | 218.8% |
% w/ College Degree | 78.8% | -0.3% |
Race and Ethnicity
| Metric | Latest Census | 5-Year % Change |
|---|---|---|
% White | 65.3% | -8.7% |
% Black | 1.4% | 16.7% |
% Hispanic | 2.3% | -30.3% |
% Asian | 22.3% | 12.1% |
% Foreign Born | 24.5% | 16.7% |
Mortgage and Risk — Mercer Island, WA
According to the latest data from the U.S. Department of Housing and Urban Development (HUD) as of 2023, the number of mortgages originated in Mercer Island, WA in that year was 328. 99.0% of all primary home loans were conventional, the remainder were government-backed loans, such as FHA loans. The average loan-to-value for all loans was 46.0%. Of those, 2.0% were >90% loan to value. This is considered normal, suggesting that mortgage risk is small in Mercer Island, WA. Investor activity in Mercer Island, WA is low, as 1.0% of all loans are originated by investors. In 2023, 5.0% of all loans were cash-out refinances, suggesting few homeowners are actively tapping their home's equity.
Mortgages
| Metric | Zip Code Average | Metro Average | State Average |
|---|---|---|---|
Total Loan Originations | 328 | N/A | N/A |
% Conventional Loans | 99.0% | N/A | N/A |
% Government Loans | 1.0% | N/A | N/A |
% Investor Loans | 1.0% | N/A | N/A |
% Second Loans | 2.0% | N/A | N/A |
% Cash Out Refinance | 5.0% | N/A | N/A |
Rentals and Section 8 — Mercer Island, WA
As of 2024, the percent of homes in Mercer Island, WA under the Section 8 program is 2.7%. This is considered low, suggesting that the neighborhood is sparsely composed of Section 8 homes. Section 8 opportunity is good when HUD pays homeowners more than the average rental market rate for various home sizes. For each bedroom size, the average difference between HUD payments and market rents is shown in the table below.
Section 8 Market Size
Total Units under HUD | 108 |
Total Units Section 8 | 91 |
% Rentals under Section 8 | 2.7% |
% Occupied Section 8 | 100.0% |
Section 8 Opportunity
| Home Size | HUD Premium | Market Rent | Max HUD Rent |
|---|---|---|---|
| 1 Bedroom | $830 | $2,000 | $2,830 |
| 2 Bedroom | $100 | $3,200 | $3,300 |
| 3 Bedroom | -$1,150 | $5,500 | $4,350 |
| 4 Bedroom | -$1,630 | $6,700 | $5,070 |
Affordability — Mercer Island, WA
Home Price to Income Ratio
| Metric | Zip Code Average | Metro Average | State Average |
|---|---|---|---|
| Home Price to Income Ratio | 10.6 | N/A | N/A |
| Median Home Price | $2,248,000 | N/A | N/A |
| Median Household Income | $202,000 | N/A | N/A |