Which ZIP code in Palo Alto has the highest share of households with children?

94303 (Palo Alto), at 37.4%, among 6 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 Palo Alto, CA

These are the 6 ZIP codes in Palo Alto, CA with the highest share of households with children, out of 6 with at least 1,000 residents. 94303 (Palo Alto, 37.4%), 94022 (Los Altos, 33.1%) and 94306 (Palo Alto, 30.5%) lead the list. There is no single "best" ZIP code in Palo Alto; 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 Palo Alto

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	94303	Palo Alto	37.4%	46,879	14,466	14,447
2	94022	Los Altos	33.1%	20,027	7,275	7,892
3	94306	Palo Alto	30.5%	27,183	10,640	12,003
4	94301	Palo Alto	29.5%	17,508	7,167	7,919
5	94304	Palo Alto	21.9%	5,000	2,218	2,256
6	94028	Portola Valley	21.2%	6,531	2,637	2,612

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; 6 of 6 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 41,766 households, on 109 carrier routes with 44,517 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 94303 on the EDDM route map

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Frequently asked questions

Which ZIP code in Palo Alto has the highest share of households with children?: 94303 (Palo Alto), at 37.4%, among 6 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.