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

45373 (Troy), at 39.3 (±0.8), 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.

Youngest ZIP codes in Miami County, OH

These are the 14 ZIP codes in Miami County with the lowest median age, out of 14 with at least 1,000 residents. 45373 (Troy, 39.3), 45383 (West Milton, 40.5) and 45344 (New Carlisle, 41.2) 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.

Youngest ZIP codes in Miami County

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

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; 14 of 15 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 34,376 households, on 65 carrier routes with 37,051 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 45373 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 Miami County has the lowest median age?: 45373 (Troy), at 39.3 (±0.8), among 14 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.