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

45065 (South Lebanon), at 35.0 (±4.2), among 16 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 Warren County, OH

These are the 16 ZIP codes in Warren County with the lowest median age, out of 16 with at least 1,000 residents. 45065 (South Lebanon, 35.0), 45152 (Morrow, 36.2) and 45050 (Monroe, 36.8) lead the list. There is no single "best" ZIP code in Warren 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 Warren County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	45065	South Lebanon	35.0 ±4.2	7,053	2,359	2,838
2	45152	Morrow	36.2 ±3.9	14,850	4,805	6,147
3	45050	Monroe	36.8 ±1.9	12,248	4,288	4,570
4	45113	Clarksville	37.2 ±6.9	3,877	1,517	1,545
5	45107	Blanchester	37.4 ±3.6	9,190	3,293	3,964
6	45066	Springboro	38.7 ±1.6	27,545	9,708	10,349
7	45005	Franklin	39.4 ±2.2	32,251	12,611	13,998
8	45039	Maineville	39.5 ±1.7	28,335	10,945	11,748
9	45036	Lebanon	40.0 ±1.2	42,204	14,553	16,180
10	45040	Mason	41.5 ±1.0	59,518	22,000	22,511
11	45140	Loveland	41.6 ±1.9	57,211	22,015	22,660
12	45458	Dayton	41.7 ±1.5	38,712	15,700	16,588
13	45122	Goshen	41.9 ±5.8	10,977	4,166	4,702
14	45068	Waynesville	43.8 ±3.8	11,597	4,369	4,429
15	45162	Pleasant Plain	46.5 ±3.9	2,754	1,060	1,025
16	45054	Oregonia	52.5 ±3.5	2,693	1,186	972

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; 16 of 18 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 16,262 households, on 29 carrier routes with 19,064 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 45065 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 Warren County has the lowest median age?: 45065 (South Lebanon), at 35.0 (±4.2), among 16 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.