ZIP Code 98040
| ZIP Code | 98040 |
| City | MERCER ISLAND |
| State | WA |
| Type | STANDARD |
| Post offices count | 1 (see all) |
| Total population | 25,506 (see all) |
Cities in ZIP Code 98040
Primary city: MERCER ISLAND, WAPost offices
MERCER ISLAND — Post Office™ 3040 78TH AVE SE MERCER ISLAND, WA 98040-9998 MoreMERCER ISLAND — Post Office™3040 78TH AVE SE For facility accessibility, please call the Post Office. 1-800-ASK-USPS® (800-275-8777) Hours
Services at this Location Service hours may vary.
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Census data for ZIP Code 98040
Demographic and housing estimates in ZIP Code 98040
| Total population | 25,506 |
| Male | 12,009 |
| Female | 13,497 |
| Total population | 25,506 |
| Under 5 years | 971 |
| 5 to 9 years | 1,850 |
| 10 to 14 years | 2,087 |
| 15 to 19 years | 1,592 |
| 20 to 24 years | 889 |
| 25 to 34 years | 2,088 |
| 35 to 44 years | 3,015 |
| 45 to 54 years | 4,306 |
| 55 to 59 years | 2,009 |
| 60 to 64 years | 1,655 |
| 65 to 74 years | 2,655 |
| 75 to 84 years | 1,411 |
| 85 years and over | 978 |
| Median age (years) | 45.5 |
| Under 18 years | 6,003 |
| 16 years and over | 20,327 |
| 18 years and over | 19,503 |
| 21 years and over | 18,866 |
| 62 years and over | 6,209 |
| 65 years and over | 5,044 |
| Total population | 25,506 |
| One race | 23,559 |
| White | 17,418 |
| Black or African American | 231 |
| American Indian and Alaska Native | 17 |
| Asian | 5,492 |
| Native Hawaiian and Other Pacific Islander | 27 |
| Some other race | 374 |
| Two or more races | 1,947 |
| Citizen, VOTING AGE 18 and over population | 17,271 |
| Male Citizen, VOTING AGE 18 and over population | 8,197 |
| Female Citizen, VOTING AGE 18 and over population | 9,074 |
Social characteristics in ZIP Code 98040
| Total households | 9,758 |
| Family households (families) | 6,240 |
| Married-couple family | 392 |
| Male householder, no wife present, family | 869 |
| Female householder, no husband present, family | 557 |
| Nonfamily households | 2,257 |
| Average household size | 3,334 |
| Average family size | 2.60 |
Economic characteristics in ZIP Code 98040
| Total households | 9,758 |
| Less than $10,000 | 318 |
| $10,000 to $14,999 | 50 |
| $15,000 to $24,999 | 395 |
| $25,000 to $34,999 | 499 |
| $35,000 to $49,999 | 421 |
| $50,000 to $74,999 | 811 |
| $75,000 to $99,999 | 596 |
| $100,000 to $149,999 | 1,391 |
| $150,000 to $199,999 | 861 |
| $200,000 or more | 4,416 |
| Median household income (dollars) | 170,000 |
Housing characteristics in ZIP Code 98040
| Total housing units | 10,565 |
| Occupied housing units | 9,758 |
| Vacant housing units | 807 |
| Total housing units | 10,565 |
| 1-unit, detached | 6,993 |
| 1-unit, attached | 88 |
| 2 units | 57 |
| 3 or 4 units | 10 |
| 5 to 9 units | 564 |
| 10 to 19 units | 445 |
| 20 or more units | 2,372 |
| Mobile home | 36 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 10,565 |
| Built 2014 or later | 42 |
| Built 2010 to 2013 | 807 |
| Built 2000 to 2009 | 1,328 |
| Built 1990 to 1999 | 863 |
| Built 1980 to 1989 | 938 |
| Built 1970 to 1979 | 1,949 |
| Built 1960 to 1969 | 2,289 |
| Built 1950 to 1959 | 1,372 |
| Built 1940 to 1949 | 564 |
| Built 1939 or earlier | 413 |
| Total housing units | 10,565 |
| 1 room | 444 |
| 2 rooms | 452 |
| 3 rooms | 1,054 |
| 4 rooms | 976 |
| 5 rooms | 1,028 |
| 6 rooms | 901 |
| 7 rooms | 1,173 |
| 8 rooms | 1,207 |
| 9 rooms or more | 3,330 |
| Median rooms | 6.9 |
| Total housing units | 10,565 |
| No bedroom | 497 |
| 1 bedroom | 1,300 |
| 2 bedrooms | 1,867 |
| 3 bedrooms | 1,971 |
| 4 bedrooms | 3,214 |
| 5 or more bedrooms | 1,716 |
| Occupied housing units | 9,758 |
| Owner-occupied | 6,607 |
| Renter-occupied | 3,151 |
| Average household size of owner-occupied unit | 2.87 |
| Average household size of renter-occupied unit | 2.04 |
| Occupied housing units | 9,758 |
| Moved in 2017 or later | 1,175 |
| Moved in 2015 to 2016 | 2,836 |
| Moved in 2010 to 2014 | 1,688 |
| Moved in 2000 to 2009 | 1,829 |
| Moved in 1990 to 1999 | 1,081 |
| Moved in 1989 and earlier | 1,149 |
| Owner-occupied units | 6,607 |
| Less than $50,000 | 53 |
| $50,000 to $99,999 | 0 |
| $100,000 to $149,999 | 17 |
| $150,000 to $199,999 | 9 |
| $200,000 to $299,999 | 118 |
| $300,000 to $499,999 | 247 |
| $500,000 to $999,999 | 956 |
| $1,000,000 or more | 5,207 |
| Median (dollars) | 1,504,500 |
| Owner-occupied units | 6,607 |
| Housing units with a mortgage | 4,174 |
| Housing units without a mortgage | 2,433 |
| Occupied units paying rent | 2,923 |
| Less than $500 | 0 |
| $500 to $999 | 24 |
| $1,000 to $1,499 | 107 |
| $1,500 to $1,999 | 986 |
| $2,000 to $2,499 | 707 |
| $2,500 to $2,999 | 412 |
| $3,000 or more | 687 |
| Median (dollars) | 2,244 |
| No rent paid | 228 |
Data is based on 2021 Census