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

45505 (Springfield), at 35.1 (±1.8), among 13 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 Clark County, OH

These are the 13 ZIP codes in Clark County with the lowest median age, out of 13 with at least 1,000 residents. 45505 (Springfield, 35.1), 45324 (Fairborn, 35.3) and 43044 (Mechanicsburg, 39.8) lead the list. There is no single "best" ZIP code in Clark 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 Clark County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	45505	Springfield	35.1 ±1.8	19,826	8,155	8,971
2	45324	Fairborn	35.3 ±1.2	41,194	18,389	19,890
3	43044	Mechanicsburg	39.8 ±4.2	4,964	1,828	2,063
4	45504	Springfield	40.1 ±2.2	16,363	6,500	7,028
5	45503	Springfield	41.1 ±2.0	32,638	14,202	14,784
6	45344	New Carlisle	41.2 ±2.2	16,979	6,724	7,084
7	45323	Enon	41.5 ±3.9	4,961	2,171	2,254
8	45506	Springfield	42.2 ±1.6	13,435	5,729	5,380
9	45502	Springfield	44.2 ±1.9	17,692	6,749	7,183
10	45368	South Charleston	47.1 ±5.7	3,889	1,906	1,652
11	45341	Medway	47.7 ±8.6	3,639	1,599	1,693
12	45369	South Vienna	48.8 ±3.7	4,120	1,555	1,313
13	43153	South Solon	52.6 ±12.3	1,112	399	353

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; 13 of 19 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 49,074 households, on 86 carrier routes with 52,736 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 45505 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 Clark County has the lowest median age?: 45505 (Springfield), at 35.1 (±1.8), among 13 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.