County ZIP codes · Washington · FIPS 53033

King County, WA ZIP Codes

King County, Washington has 123 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 89 residential and 34 for PO boxes or a single organization. 86 of the residential ones lie mainly in King County and 3 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $61,460 in 98104 (Seattle) to $250,000 or more in 2 ZIP codes at the Census top code (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

98104 · $62k 2 ZIP codes · $250k+

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $102,520 and $160,849. 2 report $250,000 or more, the Census top code.

They carry 33 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 89 residential ZIP codes in King County

86 ZIP codes lie mainly in King County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in King County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
98052	Redmond	80,717	3,984	$164k	$1.18M	100%
98115	Seattle	54,349	8,294	$156k	$1.09M	100%
98133	Seattle	53,249	7,463	$94k	$770k	100%
98103	Seattle	52,671	11,475	$131k	$1.04M	100%
98034	Kirkland	52,531	5,353	$135k	$946k	100%
98003	Federal Way	51,619	4,488	$75k	$477k	100%
98118	Seattle	50,500	8,092	$114k	$811k	100%
98023	Federal Way	50,448	4,915	$105k	$590k	100%
98092	Auburn	50,224	1,171	$122k	$636k	97%
98042	Kent	50,216	1,807	$128k	$659k	100%
98105	Seattle	49,767	12,970	$74k	$1.31M	100%
98125	Seattle	44,520	8,206	$100k	$874k	100%
98122	Seattle	43,234	18,508	$107k	$957k	100%
98058	Renton	42,980	2,284	$115k	$676k	100%
98059	Renton	42,406	2,623	$139k	$872k	100%
98033	Kirkland	40,982	4,453	$183k	$1.49M	100%
98032	Kent	40,862	2,397	$83k	$521k	100%
98198	Seattle	40,463	5,237	$86k	$590k	100%
98031	Kent	40,094	5,185	$106k	$612k	100%
98006	Bellevue	40,009	3,558	$198k	$1.39M	100%
98004	Bellevue	39,897	5,488	$183k	$2M+	100%
98030	Kent	38,523	5,358	$92k	$582k	100%
98002	Auburn	37,509	5,236	$79k	$421k	100%
98001	Auburn	37,460	2,010	$107k	$587k	100%
98038	Maple Valley	37,324	567	$152k	$777k	100%
98155	Seattle	36,511	4,840	$132k	$816k	100%
98056	Renton	35,849	4,741	$114k	$797k	100%
98117	Seattle	35,711	8,982	$183k	$1.04M	100%
98168	Seattle	35,528	4,058	$88k	$548k	100%
98109	Seattle	34,328	17,741	$134k	$1.03M	100%
98144	Seattle	33,787	10,029	$97k	$902k	100%
98074	Sammamish	30,761	2,933	$244k	$1.37M	100%
98029	Issaquah	30,586	3,006	$171k	$1.06M	100%
98011	Bothell	28,963	4,106	$132k	$933k	100%
98027	Issaquah	28,955	506	$153k	$997k	100%
98107	Seattle	28,776	13,194	$143k	$953k	100%
98116	Seattle	28,711	9,567	$126k	$973k	100%
98106	Seattle	28,690	5,230	$124k	$707k	100%
98146	Seattle	28,573	6,179	$103k	$680k	100%
98007	Bellevue	27,692	6,410	$131k	$1.02M	100%
98102	Seattle	27,333	21,238	$115k	$963k	100%
98188	Seattle	27,311	3,386	$76k	$456k	100%
98008	Bellevue	27,242	4,901	$185k	$1.21M	100%
98119	Seattle	26,879	11,084	$124k	$1.05M	100%
98178	Seattle	26,748	5,458	$100k	$660k	100%
98108	Seattle	25,529	3,449	$96k	$720k	100%
98075	Sammamish	25,498	2,645	$250k+	$1.6M	100%
98040	Mercer Island	25,307	3,965	$219k	$2M+	100%
98055	Renton	24,660	5,528	$97k	$603k	100%
98072	Woodinville	24,446	1,359	$176k	$1.12M	72%
98112	Seattle	23,921	7,466	$172k	$1.55M	100%
98028	Kenmore	23,741	3,858	$140k	$921k	100%
98126	Seattle	22,975	7,418	$117k	$784k	100%
98053	Redmond	22,765	823	$192k	$1.21M	100%
98199	Seattle	22,468	5,305	$181k	$1.2M	100%
98022	Enumclaw	22,418	31	$120k	$609k	61%
98166	Seattle	22,082	3,823	$115k	$824k	100%
98005	Bellevue	21,846	2,977	$161k	$1.52M	100%
98121	Seattle	21,166	47,671	$152k	$848k	100%
98177	Seattle	21,090	3,740	$170k	$1.05M	100%
98136	Seattle	17,252	7,517	$149k	$925k	100%
98101	Seattle	17,153	32,487	$129k	$784k	100%
98104	Seattle	16,542	17,505	$62k	$616k	100%
98065	Snoqualmie	15,944	227	$198k	$957k	100%
98045	North Bend	15,289	89	$176k	$939k	100%
98077	Woodinville	14,109	816	$184k	$1.21M	85%
98057	Renton	12,705	2,051	$69k	$649k	100%
98019	Duvall	12,242	343	$161k	$827k	100%
98070	Vashon	9,934	269	$121k	$791k	100%
98148	Seattle	9,715	3,584	$87k	$608k	100%
98014	Carnation	8,264	95	$164k	$941k	100%
98010	Black Diamond	6,857	460	$142k	$775k	100%
98047	Pacific	6,817	3,186	$115k	$483k	71%
98024	Fall City	3,908	177	$161k	$1.11M	100%
98051	Ravensdale	3,442	64	$136k	$791k	100%
98039	Medina	2,928	2,040	$250k+	$2M+	100%
98195	Seattle	2,757	6,980	–	–	100%
98134	Seattle	645	194	$68k	$346k	100%
98164	Seattle	292	73,000	$250k+	–	100%
98224	Baring	190	3	$79k	$688k	100%
98288	Skykomish	169	0	$65k	$450k	100%
98050	Preston	108	58	–	$2M+	100%
98025	Hobart	52	22	–	–	100%
98154	Seattle	no residents	0	–	–	100%
98158	Seattle	no residents	0	–	–	100%
98174	Seattle	no residents	0	–	–	100%

Partly in King County

Residential ZIP codes mainly in another county that reach at least 1% into King County, by their share here
						In this county
98068	Snoqualmie Pass	482	2	$100k	$904k	45%
98354	Milton	8,597	3,035	$97k	$537k	20%
98422	Tacoma	21,644	3,090	$119k	$664k	2%

Download the 123 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

8 ZIP codes of King County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in King County and in the neighboring counties
ZIP	In King	Elsewhere
98092	97%	Pierce County 3%
98072	72%	Snohomish County 28%
98022	61%	Pierce County 39%
98422	2%	Pierce County 98%
98077	85%	Snohomish County 15%
98354	20%	Pierce County 80%
98047	71%	Pierce County 29%
98068	45%	Kittitas County 55%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in King County without a residential area (GeoNames postal codes)
ZIP	Postal name
98009	Bellevue
98013	Burton
98015	Bellevue
98035	Kent
98041	Bothell
98062	Seahurst
98063	Federal Way
98064	Kent
98071	Auburn
98073	Redmond
98083	Kirkland
98089	Kent
98093	Federal Way
98111	Seattle
98113	Seattle
98114	Seattle
98124	Seattle
98127	Seattle
98129	Seattle
98131	Seattle
98138	Seattle
98139	Seattle
98141	Seattle
98145	Seattle
98160	Seattle
98161	Seattle
98165	Seattle
98170	Seattle
98175	Seattle
98181	Seattle
98185	Seattle
98190	Seattle
98191	Seattle
98194	Seattle

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do King County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. King County's ZIP codes use 5 prefixes: 980, 981, 982, 983 and 984.

Three-digit prefixes of King County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are King County's
Prefix	Sectional center	Here	All codes
980	Seattle, WA (SCF 980)	60	71
981	Seattle, WA (SCF 980)	59	60
982	Seattle, WA (SCF 980)	2	76
983	Tacoma, WA (SCF 983)	1	81
984	Tacoma, WA (SCF 983)	1	43

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.

Where are the ZIP codes of King County?