Which ZIP code in King County has the highest share of households with children?

98074 (Sammamish), at 52.3%, among 78 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

ZIP codes with the most families with kids in King County, WA

These are the 25 ZIP codes in King County with the highest share of households with children, out of 78 with at least 1,000 residents. 98074 (Sammamish, 52.3%), 98075 (Sammamish, 51.9%) and 98065 (Snoqualmie, 49.5%) lead the list. There is no single "best" ZIP code in King County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

ZIP codes with the most families with kids in King County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	98074	Sammamish	52.3%	30,761	10,272	10,464
2	98075	Sammamish	51.9%	25,498	8,158	8,615
3	98065	Snoqualmie	49.5%	15,944	5,445	5,264
4	98038	Maple Valley	45.6%	37,324	12,618	13,215
5	98047	Pacific	44.3%	6,817	2,230	2,370
6	98019	Duvall	43.1%	12,242	4,155	4,570
7	98059	Renton	41.2%	42,406	14,520	15,509
8	98092	Auburn	40.8%	50,224	16,618	17,242
9	98014	Carnation	40.4%	8,264	2,869	2,508
10	98053	Redmond	39.3%	22,765	8,327	8,407
11	98039	Medina	39.2%	2,928	1,010	1,085
12	98030	Kent	38.8%	38,523	13,113	13,773
13	98029	Issaquah	38.2%	30,586	12,115	12,665
14	98045	North Bend	37.8%	15,289	5,514	6,579
15	98001	Auburn	36.8%	37,460	11,982	12,692
16	98008	Bellevue	36.8%	27,242	9,431	9,729
17	98077	Woodinville	36.7%	14,109	4,743	4,639
18	98042	Kent	36.6%	50,216	17,144	17,948
19	98006	Bellevue	36.6%	40,009	14,084	14,714
20	98010	Black Diamond	36.6%	6,857	2,649	3,560
21	98031	Kent	34.4%	40,094	14,011	14,738
22	98146	Seattle	34.2%	28,573	10,617	11,029
23	98058	Renton	33.8%	42,980	15,516	16,472
24	98178	Seattle	33.8%	26,748	9,349	9,572
25	98072	Woodinville	33.6%	24,446	9,487	10,755

How we ranked them

Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files. ZIP codes need at least 1,000 residents to be ranked; 78 of 88 qualify.

Which of these to mail, and why

Households with children buy tutoring, youth sports, pediatric and family dental care, child care, birthday venues and family dining. EDDM reaches every door on a route, so a higher share means more of your pieces land with families.

The top five ZIP codes on this list hold 38,723 households, on 63 carrier routes with 39,928 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 98074 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in King County has the highest share of households with children?: 98074 (Sammamish), at 52.3%, among 78 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the share of households with one or more people under 18 (ACS Data Profile, 2020–2024). The Census Bureau does not publish a margin of error for this share in our files.
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.