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

17103 (Harrisburg), at 33.1 (±6.2), among 24 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 Dauphin County, PA

These are the 24 ZIP codes in Dauphin County with the lowest median age, out of 24 with at least 1,000 residents. 17103 (Harrisburg, 33.1), 17101 (Harrisburg, 33.3) and 17034 (Highspire, 34.6) lead the list. There is no single "best" ZIP code in Dauphin 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 Dauphin County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	17103	Harrisburg	33.1 ±6.2	13,115	4,999	5,051
2	17101	Harrisburg	33.3 ±2.1	2,722	1,914	2,106
3	17034	Highspire	34.6 ±5.8	3,071	1,459	1,309
4	17102	Harrisburg	34.9 ±2.1	8,118	4,657	4,360
5	17109	Harrisburg	35.2 ±3.4	27,466	10,960	10,584
6	17104	Harrisburg	35.6 ±3.4	18,541	7,522	7,681
7	17033	Hershey	36.8 ±4.0	16,481	6,469	7,291
8	17110	Harrisburg	37.0 ±1.9	27,364	11,741	13,075
9	17113	Harrisburg	37.7 ±2.5	11,724	4,631	—
10	17111	Harrisburg	38.5 ±1.6	36,744	14,538	—
11	17057	Middletown	39.8 ±3.1	23,560	10,216	9,676
12	17048	Lykens	39.9 ±4.4	3,870	1,554	1,746
13	17098	Williamstown	40.7 ±4.1	2,618	1,130	1,079
14	17061	Millersburg	41.1 ±6.0	6,842	2,981	2,917
15	17036	Hummelstown	41.2 ±1.3	23,520	9,862	10,238
16	17078	Palmyra	41.8 ±2.7	23,840	9,603	9,890
17	17022	Elizabethtown	42.8 ±2.4	31,908	12,477	13,054
18	17023	Elizabethville	43.5 ±4.4	3,489	1,348	1,061
19	17980	Tower City	43.8 ±4.5	3,342	1,282	1,389
20	17112	Harrisburg	44.7 ±1.4	38,502	15,960	16,081
21	17028	Grantville	45.3 ±8.9	3,563	1,456	1,388
22	17032	Halifax	47.6 ±1.7	7,551	3,228	3,066
23	17017	Dalmatia	52.6 ±4.7	1,509	683	749
24	17018	Dauphin	53.1 ±6.1	3,902	1,877	1,753

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; 24 of 30 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 23,989 households, on 42 carrier routes with 23,410 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 17103 on the EDDM route map

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Frequently asked questions

Which ZIP code in Dauphin County has the lowest median age?: 17103 (Harrisburg), at 33.1 (±6.2), among 24 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.