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

95046 (San Martin), at 44.5%, among 60 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 Santa Clara County, CA

These are the 25 ZIP codes in Santa Clara County with the highest share of households with children, out of 60 with at least 1,000 residents. 95046 (San Martin, 44.5%), 95023 (Hollister, 44.3%) and 95124 (San Jose, 44.3%) lead the list. There is no single "best" ZIP code in Santa Clara 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 Santa Clara County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	95046	San Martin	44.5%	6,324	1,797	1,561
2	95023	Hollister	44.3%	59,889	17,897	19,332
3	95124	San Jose	44.3%	52,096	17,586	17,617
4	95138	San Jose	43.7%	18,960	5,580	6,039
5	95122	San Jose	42.5%	50,775	11,829	12,724
6	95129	San Jose	41.6%	41,321	14,105	14,660
7	95139	San Jose	41.2%	7,035	2,174	2,224
8	95020	Gilroy	41.1%	67,181	19,984	21,334
9	95148	San Jose	40.9%	44,995	12,110	11,718
10	95127	San Jose	40.7%	58,825	15,230	16,114
11	95014	Cupertino	39.7%	60,932	21,868	22,398
12	95111	San Jose	39.7%	57,202	15,578	16,167
13	95116	San Jose	39.3%	48,042	13,394	13,791
14	95130	San Jose	38.9%	13,511	4,750	4,932
15	94087	Sunnyvale	38.7%	57,767	20,612	21,179
16	95118	San Jose	38.4%	32,015	11,404	11,866
17	95037	Morgan Hill	38.3%	51,943	16,742	18,928
18	95119	San Jose	37.8%	10,841	3,649	3,852
19	95035	Milpitas	37.4%	78,810	25,124	27,944
20	94303	Palo Alto	37.4%	46,879	14,466	14,447
21	94024	Los Altos	36.6%	23,051	7,938	8,068
22	95132	San Jose	36.4%	40,334	12,068	12,018
23	95120	San Jose	36.1%	36,967	12,660	12,916
24	94550	Livermore	36.0%	49,873	17,564	18,701
25	95032	Los Gatos	35.8%	27,313	10,450	11,051

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; 60 of 62 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 54,689 households, on 100 carrier routes with 57,273 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 95046 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Santa Clara County has the highest share of households with children?: 95046 (San Martin), at 44.5%, among 60 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.