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ZIP Code Database - Facts & Stats

Data Last Updated: June 1, 2023

Zip Code 99338, Kennewick, WA

ZIP Code 99338 Details

Zip Code:99338
State:WA [Washington]
Counties:BENTON, WA
Multi County:No
City Alias(es):Kennewick
City Alias(es) To Avoid Using:Pasco
Area Code:509
City Type:P [Post Office]
Classification: [Non-Unique]
Time Zone:Pacific (GMT -08:00)
Observes Daylight Saving:Yes
Elevation:1608 ft
State FIPS:53
County FIPS:005
Intro Date:<2004-10

ZIP Code 99338 2020 Census Demographics

Current Population:22,060
2020 Population:19,117
Households per ZIP Code:6,599
Average House Value:$379,700
Avg. Income Per Household:$118,186
Persons Per Household:2.90
White Population:15,278
Black Population:209
Hispanic Population:2,556
Asian Population:615
American Indian Population:177
Hawaiian Population:32
Other Population:869
Male Population:9,406
Female Population:9,711
Median Age:37.90 years
Male Median Age:37.40 years
Female Median Age:38.40 years

ZIP Code 99338 Other Demographics

# Residential Mailboxes:7,607
# Business Mailboxes:201
Total Delivery Receptacles:12,319
Number of Businesses:343
1st Quarter Payroll:$43,532,000
Annual Payroll:$198,118,000
# of Employees:3,100
Water Area:0 sq mi
Land Area:35.452 sq mi
118th Congressional District:04
118th Congressional Land Area:19250.22 sq mi
Single Family Delivery Units:1,713
Multi Family Delivery Units:565
# Residential Mailboxes:7,607
# Business Mailboxes:201
Total Delivery Receptacles:12,319

ZIP Code 99338 Social Security Benefits

  2018 2019 Delta
Total Beneficiaries: 2,900 3,100 +200
Retired Workers: 2,220 2,395 +175
Disabled Workers: 260 270 +10
Widow(er)s and Parents: 145 155 +10
Spouses: 125 130 +5
Children: 150 150 0
65+: 2,335 2,510 +175
Monthly Benefits - All: $4,656,000 $5,131,000 +$475,000
Monthly Benefits - Retired Workers: $3,814,000 $4,232,000 +$418,000
Monthly Benefits - Widow(ers): $232,000 $256,000 +$24,000

ZIP Code 99338 Statistical Areas

CBSA Name: 
CBSA Type: 
CBSA Division: 
CBSA Division Name: 
CBSA Population:0
CBSA Division Population:0
MSA: 6740
MSA Name: Richland-Kennewick-Pasco, WA MSA
PMSA Name: 
City State Key:Z16967
Preferred Last Line Key:Z16967
99337: Previous ZIP Code
Next ZIP Code: 99341


  1. U.S. Postal Service [Last Updated: 6/1/2023],
  2. Internal Data Creation [Last Updated: 6/1/2023],
  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: 6/1/2023],
  6. U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023],
  7. Centers for Medicare & Medicaid Services [Updated Yearly],