Which ZIP code in St. Louis city County has the highest share of households with children?

63120 (Saint Louis), at 37.3%, among 20 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 St. Louis city, MO

These are the 20 ZIP codes in St. Louis city with the highest share of households with children, out of 20 with at least 1,000 residents. 63120 (Saint Louis, 37.3%), 63137 (Saint Louis, 33.9%) and 63106 (Saint Louis, 33.8%) lead the list. There is no single "best" ZIP code in St. Louis city 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 St. Louis city County

Rank	ZIP	Mailing city	Households with children under 18	Residents	Households	Residential mailboxes
1	63120	Saint Louis	37.3%	6,790	2,722	2,923
2	63137	Saint Louis	33.9%	19,684	8,104	7,527
3	63106	Saint Louis	33.8%	6,751	3,342	4,800
4	63118	Saint Louis	25.4%	25,913	12,138	11,093
5	63147	Saint Louis	24.4%	8,173	3,620	3,649
6	63116	Saint Louis	23.2%	42,170	19,900	18,720
7	63115	Saint Louis	22.5%	14,488	6,953	6,643
8	63107	Saint Louis	22.3%	8,909	4,001	4,003
9	63111	Saint Louis	22.1%	18,851	8,959	8,614
10	63143	Saint Louis	20.1%	8,975	4,825	5,187
11	63112	Saint Louis	17.9%	17,985	9,094	10,520
12	63113	Saint Louis	17.8%	10,221	4,841	4,863
13	63104	Saint Louis	17.1%	19,007	9,888	10,469
14	63110	Saint Louis	16.4%	17,645	9,156	10,195
15	63139	Saint Louis	16.3%	21,631	11,501	12,772
16	63109	Saint Louis	16.2%	25,236	14,080	14,735
17	63101	Saint Louis	9.5%	3,130	2,130	2,706
18	63108	Saint Louis	8.3%	21,336	11,414	14,454
19	63103	Saint Louis	5.4%	8,778	5,204	5,533
20	63102	Saint Louis	1.5%	2,882	1,753	1,800

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; 20 of 21 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 29,926 households, on 58 carrier routes with 29,992 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63120 on the EDDM route map

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Frequently asked questions

Which ZIP code in St. Louis city County has the highest share of households with children?: 63120 (Saint Louis), at 37.3%, among 20 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.