Which ZIP code in Miami County has the highest median age?

45317 (Conover), at 53.6 (±17.3), among 14 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 Miami County, OH

These are the 14 ZIP codes in Miami County with the highest median age, out of 14 with at least 1,000 residents. 45317 (Conover, 53.6), 45312 (Casstown, 52.7) and 45339 (Ludlow Falls, 52.4) lead the list. There is no single "best" ZIP code in Miami County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Oldest ZIP codes in Miami County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	45317	Conover	53.6 ±17.3	1,187	490	400
2	45312	Casstown	52.7 ±14.2	1,086	484	492
3	45339	Ludlow Falls	52.4 ±6.6	1,057	449	424
4	45318	Covington	49.1 ±4.0	5,511	2,215	2,170
5	45326	Fletcher	47.2 ±6.4	1,446	531	469
6	45308	Bradford	43.4 ±6.0	4,385	1,666	1,804
7	45359	Pleasant Hill	42.4 ±7.2	2,160	729	535
8	45356	Piqua	41.5 ±1.9	25,237	10,718	10,740
9	45371	Tipp City	41.5 ±1.7	22,865	9,312	10,452
10	45322	Englewood	41.4 ±5.5	20,884	8,988	9,358
11	45337	Laura	41.4 ±9.4	1,703	593	673
12	45344	New Carlisle	41.2 ±2.2	16,979	6,724	7,084
13	45383	West Milton	40.5 ±5.0	6,912	2,842	3,233
14	45373	Troy	39.3 ±0.8	37,565	15,229	16,703

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; 14 of 15 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 4,169 households, on 9 carrier routes with 3,955 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 45317 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Miami County has the highest median age?: 45317 (Conover), at 53.6 (±17.3), among 14 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.