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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2022

Zip Code 98027, Issaquah, WA

ZIP Code 98027 Details

Zip Code:98027
State:WA [Washington]
Counties:KING, WA
Multi County:No
City Alias(es):Issaquah
City Alias(es) To Avoid Using:Coal Creek
Pine Lake
Area Code:425
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Pacific (GMT -08:00)
Observes Daylight Saving:Yes
Elevation:2076 ft
State FIPS:53
County FIPS:033
Intro Date:<2004-10

ZIP Code 98027 2010 Census Demographics

Current Population:29,807
2010 Population:26,141
Households per ZIP Code:10,454
Average House Value:$729,100
Avg. Income Per Household:$121,620
Persons Per Household:2.46
White Population:22,552
Black Population:458
Hispanic Population:1,403
Asian Population:3,052
American Indian Population:351
Hawaiian Population:122
Other Population:601
Male Population:12,785
Female Population:13,356
Median Age:41.10 years
Male Median Age:40.30 years
Female Median Age:41.90 years

ZIP Code 98027 Other Demographics

# Residential Mailboxes:12,117
# Business Mailboxes:1,081
Total Delivery Receptacles:19,079
Number of Businesses:1276
1st Quarter Payroll:$341,212,000
Annual Payroll:$1,693,588,000
# of Employees:20,358
Water Area:0.997 sq mi
Land Area:55.81 sq mi
113th Congressional District:08|09
113th Congressional Land Area:7359.7|183.43 sq mi
Single Family Delivery Units:4,486
Multi Family Delivery Units:2,139
# Residential Mailboxes:12,117
# Business Mailboxes:1,081
Total Delivery Receptacles:19,079

ZIP Code 98027 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 4,425 4,505 +80
Retired Workers: 3,435 3,560 +125
Disabled Workers: 285 250 -35
Widow(er)s and Parents: 265 260 -5
Spouses: 285 295 +10
Children: 155 140 -15
65+: 3,845 3,980 +135
Monthly Benefits - All: $7,325,000 $7,685,000 +$360,000
Monthly Benefits - Retired Workers: $6,033,000 $6,428,000 +$395,000
Monthly Benefits - Widow(ers): $444,000 $444,000 $0

ZIP Code 98027 Statistical Areas

CBSA: 42660
CBSA Name: Seattle-Tacoma-Bellevue, WA
CBSA Type: Metro
CBSA Division: 42644
CBSA Division Name: Seattle-Bellevue-Kent, WA
CBSA Population:3,439,809
CBSA Division Population:2,644,584
MSA: 7602
MSA Name: Seattle-Tacoma-Bremerton, WA CMSA
PMSA: 7600
PMSA Name: Seattle-Bellevue-Everett, WA PMSA
City State Key:Z16943
Preferred Last Line Key:Z16943
98026: Previous ZIP Code
Next ZIP Code: 98028


  1. U.S. Postal Service [Last Updated: 5/1/2022],
  2. Internal Data Creation [Last Updated: 5/1/2022],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census American National Standards Institute (ANSI) [Last Updated: 5/1/2022],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],