Which ZIP code in St. Louis has the highest median age?

63113 (Saint Louis), at 48.6 (±4.6), 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.

Oldest ZIP codes in St. Louis, MO

These are the 20 ZIP codes in St. Louis, MO with the highest median age, out of 20 with at least 1,000 residents. 63113 (Saint Louis, 48.6), 63147 (Saint Louis, 47.5) and 63115 (Saint Louis, 44.1) lead the list. There is no single "best" ZIP code in St. Louis; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Oldest ZIP codes in St. Louis

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	63113	Saint Louis	48.6 ±4.6	10,221	4,841	4,863
2	63147	Saint Louis	47.5 ±3.8	8,173	3,620	3,649
3	63115	Saint Louis	44.1 ±5.3	14,488	6,953	6,643
4	63107	Saint Louis	43.9 ±3.4	8,909	4,001	4,003
5	63109	Saint Louis	41.0 ±1.7	25,236	14,080	14,735
6	63104	Saint Louis	37.3 ±2.3	19,007	9,888	10,469
7	63101	Saint Louis	37.1 ±8.0	3,130	2,130	2,706
8	63139	Saint Louis	36.5 ±1.8	21,631	11,501	12,772
9	63116	Saint Louis	36.3 ±1.1	42,170	19,900	18,720
10	63137	Saint Louis	35.8 ±2.7	19,684	8,104	7,527
11	63111	Saint Louis	35.5 ±1.6	18,851	8,959	8,614
12	63110	Saint Louis	35.0 ±1.0	17,645	9,156	10,195
13	63118	Saint Louis	34.9 ±1.0	25,913	12,138	11,093
14	63143	Saint Louis	34.7 ±1.9	8,975	4,825	5,187
15	63120	Saint Louis	33.8 ±3.9	6,790	2,722	2,923
16	63108	Saint Louis	33.7 ±1.5	21,336	11,414	14,454
17	63102	Saint Louis	33.6 ±5.7	2,882	1,753	1,800
18	63112	Saint Louis	33.4 ±2.8	17,985	9,094	10,520
19	63103	Saint Louis	33.0 ±1.8	8,778	5,204	5,533
20	63106	Saint Louis	32.6 ±4.2	6,751	3,342	4,800

How we ranked them

Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 20 of 21 qualify.

Which of these to mail, and why

Older ZIP codes respond to health care, hearing and vision, Medicare plans, home safety, estate planning and services that come to the door.

The top five ZIP codes on this list hold 33,495 households, on 77 carrier routes with 33,893 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63113 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 St. Louis has the highest median age?: 63113 (Saint Louis), at 48.6 (±4.6), among 20 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024).
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.