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ZIP Code Database - Facts & Stats

Data Last Updated: May 1, 2023

Zip Code 98121, Seattle, WA

ZIP Code 98121 Details

Zip Code:98121
State:WA [Washington]
Counties:KING, WA
Multi County:No
City Alias(es):Seattle
Area Code:206 / 360 / 425 / 564
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Pacific (GMT -08:00)
Observes Daylight Saving:Yes
Elevation:101 ft
State FIPS:53
County FIPS:033
Intro Date:<2004-10

ZIP Code 98121 2010 Census Demographics

Current Population:22,962
2010 Population:12,628
Households per ZIP Code:8,668
Average House Value:$739,800
Avg. Income Per Household:$135,823
Persons Per Household:1.33
White Population:9,447
Black Population:1,039
Hispanic Population:808
Asian Population:2,098
American Indian Population:309
Hawaiian Population:96
Other Population:286
Male Population:7,047
Female Population:5,581
Median Age:34.80 years
Male Median Age:35.80 years
Female Median Age:33.60 years

ZIP Code 98121 Other Demographics

# Residential Mailboxes:17,265
# Business Mailboxes:1,222
Total Delivery Receptacles:18,967
Number of Businesses:1261
1st Quarter Payroll:$840,402,000
Annual Payroll:$3,348,548,000
# of Employees:32,982
Water Area:0.203 sq mi
Land Area:0.443 sq mi
118th Congressional District:07
118th Congressional Land Area:144.13 sq mi
Single Family Delivery Units:818
Multi Family Delivery Units:15,683
# Residential Mailboxes:17,265
# Business Mailboxes:1,222
Total Delivery Receptacles:18,967

ZIP Code 98121 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 1,820 1,870 +50
Retired Workers: 1,200 1,255 +55
Disabled Workers: 435 425 -10
Widow(er)s and Parents: 70 65 -5
Spouses: 70 85 +15
Children: 45 40 -5
65+: 1,270 1,325 +55
Monthly Benefits - All: $2,710,000 $2,833,000 +$123,000
Monthly Benefits - Retired Workers: $2,004,000 $2,147,000 +$143,000
Monthly Benefits - Widow(ers): $102,000 $94,000 ($8,000)

ZIP Code 98121 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:Z17429
Preferred Last Line Key:Z17429
98119: Previous ZIP Code
Next ZIP Code: 98122


  1. U.S. Postal Service [Last Updated: 5/1/2023],
  2. Internal Data Creation [Last Updated: 5/1/2023],
  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: 5/1/2023],
  6. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],