Mercer Island, Washington Population 2019

Mercer Island, Washington's estimated population is 25,976 according to the most recent United States census estimates. Mercer Island, Washington is the 42nd largest city in Washington based on official 2017 estimates from the US Census Bureau.

The population density is 4074.08 people/mi² (1573.00 people/km²).

The overall median age is 45.5 years, 45.4 years for males, and 45.5 years for females. For every 100 females there are 93.1 males.

Based on data from the American Community Survey, in 2017 there were households in the city, with an average size of 2.5 people per household. The homeowner vacancy rate was %, with a median rent of $/month. The median house has rooms, and has a value of $.

The median income for households in Mercer Island, Washington is $136,644, while the mean household income is $206,003.

Mercer Island Wa Demographics

According to the most recent ACS, the racial composition of Mercer Island Wa was:

  • White: 74.91%
  • Asian: 18.91%
  • Two or more races: 3.66%
  • Black or African American: 1.80%
  • Other race: 0.61%
  • Native Hawaiian or Pacific Islander: 0.07%
  • Native American: 0.03%

How Many People Live in Mercer Island, Washington?

25,976
Year Population Growth Annual Growth Rate
201825,9762230.87%
201725,7531350.53%
201625,6182370.93%
201525,3816212.51%
201424,7603171.30%
201324,4433851.60%
201224,0585162.19%
201123,5427733.39%
201022,7697330.33%
200022,0361,2200.57%
199020,816-706-0.33%
198021,5222,4751.23%
197019,0477,0474.73%
196012,0000.00%

Population by Race

Race Population
White18,554
Asian4,683
Two or More Races907
Black or African American447
Some Other Race152
Native Hawaiian and Other Pacific Islander17
American Indian and Alaska Native8

Mercer Island Wa Population Pyramid 2019

Mercer Island Wa Median Age

45.5


Total

45.4


Male

45.5


Female

Mercer Island Wa Adults

There are 18,847 adults, (4,912 of whom are seniors) in Mercer Island Wa.

Mercer Island Wa Age Dependency

77.7

Age Dependency Ratio

35.2

Old Age Dependency Ratio

42.5

Child Dependency Ratio

Mercer Island Wa Sex Ratio

Female

12,826

51.78%

Male

11,942

48.22%

Mercer Island Wa Households and Families

Mercer Island Wa Renter vs Owner Occupied by Household Type

Mercer Island Wa Household Types

Type Owner Renter
Married85.6%14.4%
All70.4%29.6%
Female68.1%31.9%
Male44.1%55.9%
Non Family41.8%58.2%

70.4%

Rate of Home Ownership

Type Count Average Size Owned
All9,8672.570.4
Married6,0793.0785.6
Non Family2,8381.2141.8
Female6012.7968.1
Male3492.5844.1

2.99

Average Family Size

2.5

Average Household Size

3.8%

Unmarried (Opposite Sex)

0.7%

Unmarried (Same Sex)

Mercer Island Wa Education

Education Attained Count Percentage
Less Than 9th Grade1250.71%
9th to 12th Grade2471.41%
High School Graduate9035.14%
Some College1,78610.16%
Associates Degree7794.43%
Bachelors Degree7,29641.51%
Graduate Degree6,44136.64%

Mercer Island Wa Educational Attainment by Race

Name Total High School Bachelors
White13,09512,93010,426
Asian3,3083,1362,579
Hispanic454442247
Multiple Races406403257
Black301281200
Other Race827552
Native American887

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among native american people with a rate of 87.50%.

Name Average Male Female
Overall$85,270$118,500$52,772
Less Than High School$13,958$$13,542
High School Grad$37,917$50,938$30,192
Some College$41,840$52,820$22,250
Bachelors Degree$76,060$103,059$57,339
Graduate Degree$123,711$154,615$79,524

$85,270

Average Earnings

$118,500

Average Male

$52,772

Average Female

Mercer Island Wa Language

Mercer Island Wa Language by Age

Mercer Island Wa Language

82.44% of Mercer Island Wa residents speak only English, while 17.56% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 9.08% of the population.

Mercer Island Wa Poverty

Mercer Island Wa Poverty by Race

Name Total In Poverty Poverty Rate
White17,8096953.90%
Asian4,6642174.65%
Black4476614.77%
Hispanic718527.24%
Multiple899212.34%
Islander1717100.00%
Other14510.69%

4.34%

Overall Poverty Rate

2.97%

Male Poverty Rate

5.61%

Female Poverty Rate

Poverty in Mercer Island Wa

The race most likely to be in poverty in Mercer Island Wa is Islander, with 100.00% below the poverty level.

The race least likely to be in poverty in Mercer Island Wa is Other, with 0.69% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.70%. Among those working part-time, it was 8.11%, and for those that did not work, the poverty rate was 6.94%.

Name Poverty
Less Than High School28.94%
High School11.35%
Some College7.61%
Bachelors or Greater2.31%
Name Poverty
Female Unemployed39.93%
Male Unemployed15.88%
Female Employed3.27%
Male Employed1.80%

Mercer Island Wa Income

Mercer Island Wa Income by Household Type

Name Median Mean
Households$136,644$206,003
Families$186,525$248,523
Married Families$200,625$270,066
Non Families$60,872$97,652

Mercer Island Wa Marital Status

Mercer Island Wa Marital Status

Marriage Rates

63.9%

Overall Marriage Rate

67.6%

Male Marriage Rate

60.5%

Female Marriage Rate

Mercer Island Wa Married by Age and Sex

Mercer Island Wa Marriage

The age group where males are most likely to be married is 35-44, while the female age group most likely to be married is 35-44.

Mercer Island Wa Marital Status by Race

Mercer Island Wa Veterans

1,557

Number of Veterans

1,472

Male Veterans

85

Female Veterans

War Veterans
Vietnam567
World War II233
Korea204
First Gulf War144
Second Gulf War110

Mercer Island Wa Veterans by Race

Name Veterans % of Total
White1,3309.24%
Asian1183.38%
Black5415.38%
2 or More438.67%
Hispanic122.45%
Other1213.33%

Mercer Island Wa Veterans by Education

2.08%

Veteran Poverty Rate

31.54%

Veteran Disability Rate

Mercer Island Wa Employment Status

61.5%

Labor Force Participation

58.9%

Employment Rate

4.2%

Unemployment Rate

Mercer Island Wa Place of Birth

Origin of Non Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

37.67%

Born in Washington

81.48%

Native Born

18.52%

Foreign Born

6.15%

Non Citizen

Place of Birth

81.48% of Mercer Island Wa residents were born in the United States, with 37.67% having been born in Washington. 6.15% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.