ZIP Codes Box

Benton County, Washington ZIP codes

10ZIP codes
7Cities and towns
211,971People in ZIP areas
458, 509, 541Area codes

Benton County is in Washington and the Pacific Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Benton County

ZIP codeCityTypePopulationMedian income
99320Benton CityStandard9,879$90,102
99336KennewickStandard50,735$62,527
99337KennewickStandard33,287$98,848
99338KennewickStandard20,633$111,042
99345PatersonPO Box only162$102,500
99346PlymouthPO Box only198$50,865
99350ProsserStandard14,837$81,014
99352RichlandStandard37,430$100,108
99353West RichlandStandard19,251$121,845
99354RichlandStandard25,559$91,933

Cities and towns in Benton County

Area codes in Benton County

Questions

How many ZIP codes are in Benton County, WA?
Benton County has 10 ZIP codes, 8 of them standard ZIP codes for street addresses.
What cities are in Benton County?
Benton County ZIP codes cover Kennewick, Richland, Benton City, Paterson, Plymouth, Prosser and West Richland.
What area code is Benton County, WA?
Benton County uses area codes 458, 509 and 541.
What time zone is Benton County in?
Benton County is in Pacific Time.

Other Washington counties