Which ZIP code in Franklin County has the lowest median age?

63084 (Union), at 36.7 (±2.3), among 15 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.

Youngest ZIP codes in Franklin County, MO

These are the 15 ZIP codes in Franklin County with the lowest median age, out of 15 with at least 1,000 residents. 63084 (Union, 36.7), 63089 (Villa Ridge, 38.4) and 63068 (New Haven, 39.0) lead the list. There is no single "best" ZIP code in Franklin County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Youngest ZIP codes in Franklin County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	63084	Union	36.7 ±2.3	20,708	7,962	8,531
2	63089	Villa Ridge	38.4 ±7.3	5,662	2,264	2,485
3	63068	New Haven	39.0 ±5.9	6,202	2,157	2,084
4	63077	Saint Clair	39.2 ±2.9	11,391	4,692	5,115
5	63080	Sullivan	43.2 ±3.4	13,124	5,646	6,049
6	63069	Pacific	43.7 ±2.5	15,697	6,416	6,428
7	63056	Leslie	43.9 ±6.2	1,896	726	848
8	63090	Washington	44.1 ±1.4	23,258	9,819	10,807
9	63091	Rosebud	44.3 ±6.9	1,449	582	586
10	63055	Labadie	45.4 ±6.9	1,693	728	1,104
11	63013	Beaufort	45.8 ±8.1	1,136	428	695
12	63072	Robertsville	49.2 ±3.0	3,469	1,276	1,424
13	63015	Catawissa	49.9 ±18.2	1,939	706	878
14	63037	Gerald	52.3 ±5.3	2,970	1,382	1,401
15	63060	Lonedell	54.0 ±12.0	2,192	889	868

How we ranked them

Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 15 of 21 qualify.

Which of these to mail, and why

Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.

The top five ZIP codes on this list hold 22,721 households, on 47 carrier routes with 24,264 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 63084 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 Franklin County has the lowest median age?: 63084 (Union), at 36.7 (±2.3), among 15 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, lowest 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.