Which ZIP code in Saint Louis has the highest median age?

63127 (Saint Louis), at 54.5 (±2.9), among 44 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 Saint Louis, MO

These are the 25 ZIP codes in Saint Louis, MO with the highest median age, out of 44 with at least 1,000 residents. 63127 (Saint Louis, 54.5), 63124 (Saint Louis, 49.2) and 63113 (Saint Louis, 48.6) lead the list. There is no single "best" ZIP code in Saint 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 Saint Louis

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	63127	Saint Louis	54.5 ±2.9	5,268	2,149	2,378
2	63124	Saint Louis	49.2 ±4.6	10,839	4,832	5,165
3	63113	Saint Louis	48.6 ±4.6	10,221	4,841	4,863
4	63128	Saint Louis	47.9 ±2.4	30,540	13,032	13,196
5	63147	Saint Louis	47.5 ±3.8	8,173	3,620	3,649
6	63131	Saint Louis	46.3 ±2.6	17,935	6,511	6,482
7	63129	Saint Louis	44.4 ±1.3	51,553	21,301	22,430
8	63115	Saint Louis	44.1 ±5.3	14,488	6,953	6,643
9	63107	Saint Louis	43.9 ±3.4	8,909	4,001	4,003
10	63122	Saint Louis	42.3 ±1.1	41,634	16,686	17,610
11	63141	Saint Louis	41.7 ±2.8	20,932	8,751	9,034
12	63119	Saint Louis	41.1 ±1.0	34,181	14,476	14,485
13	63109	Saint Louis	41.0 ±1.7	25,236	14,080	14,735
14	63126	Saint Louis	41.0 ±1.7	15,452	6,208	6,435
15	63123	Saint Louis	40.9 ±1.0	49,077	21,755	22,718
16	63132	Saint Louis	39.5 ±2.1	14,283	5,997	6,095
17	63146	Saint Louis	38.8 ±2.2	30,678	14,551	15,543
18	63133	Saint Louis	38.6 ±2.7	6,569	3,015	3,155
19	63125	Saint Louis	38.1 ±3.3	33,294	13,820	14,726
20	63114	Saint Louis	37.5 ±1.6	33,969	15,031	15,082
21	63104	Saint Louis	37.3 ±2.3	19,007	9,888	10,469
22	63136	Saint Louis	37.1 ±2.1	40,929	17,457	17,760
23	63101	Saint Louis	37.1 ±8.0	3,130	2,130	2,706
24	63139	Saint Louis	36.5 ±1.8	21,631	11,501	12,772
25	63116	Saint Louis	36.3 ±1.1	42,170	19,900	18,720

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; 44 of 45 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 28,474 households, on 75 carrier routes with 29,251 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63127 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 Saint Louis has the highest median age?: 63127 (Saint Louis), at 54.5 (±2.9), among 44 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.