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

17538 (Landisville), at 53.1 (±4.0), among 45 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 Lancaster County, PA

These are the 25 ZIP codes in Lancaster County with the highest median age, out of 45 with at least 1,000 residents. 17538 (Landisville, 53.1), 17516 (Conestoga, 48.5) and 17520 (East Petersburg, 46.1) lead the list. There is no single "best" ZIP code in Lancaster 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 Lancaster County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	17538	Landisville	53.1 ±4.0	7,314	3,133	2,667
2	17516	Conestoga	48.5 ±5.9	5,180	2,029	1,727
3	17520	East Petersburg	46.1 ±5.8	5,040	2,212	2,223
4	17582	Washington Boro	44.3 ±6.4	1,702	640	765
5	17545	Manheim	43.9 ±2.1	23,556	9,578	9,138
6	17552	Mount Joy	43.8 ±2.8	19,761	8,368	8,835
7	17584	Willow Street	43.8 ±5.8	11,646	4,770	3,927
8	17543	Lititz	43.6 ±1.5	45,912	18,263	17,992
9	17512	Columbia	43.6 ±4.0	18,148	7,692	7,561
10	17022	Elizabethtown	42.8 ±2.4	31,908	12,477	13,054
11	17601	Lancaster	42.5 ±1.7	56,382	22,531	22,684
12	19543	Morgantown	42.4 ±1.5	6,401	2,108	2,155
13	17501	Akron	41.3 ±7.1	4,614	1,890	—
14	17502	Bainbridge	41.3 ±8.5	2,485	1,011	760
15	19540	Mohnton	41.2 ±2.9	11,957	4,330	4,680
16	19362	Nottingham	41.2 ±1.5	6,092	2,194	2,155
17	17560	New Providence	41.2 ±5.1	5,460	1,928	2,180
18	17565	Pequea	41.2 ±8.5	2,523	957	970
19	17532	Holtwood	40.4 ±7.4	3,328	1,263	1,260
20	17557	New Holland	40.1 ±3.2	15,055	5,411	5,342
21	17517	Denver	39.7 ±2.2	14,686	5,334	6,003
22	17569	Reinholds	39.2 ±4.8	7,323	2,655	2,305
23	17536	Kirkwood	39.2 ±5.7	3,452	1,067	935
24	17554	Mountville	38.7 ±3.0	7,453	2,925	3,297
25	17522	Ephrata	38.3 ±1.4	33,852	13,813	13,457

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; 45 of 56 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 17,592 households, on 29 carrier routes with 16,520 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 17538 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Lancaster County has the highest median age?: 17538 (Landisville), at 53.1 (±4.0), among 45 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.