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

19520 (Elverson), at 50.5 (±6.1), among 31 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 Chester County, PA

These are the 25 ZIP codes in Chester County with the highest median age, out of 31 with at least 1,000 residents. 19520 (Elverson, 50.5), 19312 (Berwyn, 47.3) and 19073 (Newtown Square, 46.3) lead the list. There is no single "best" ZIP code in Chester 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 Chester County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	19520	Elverson	50.5 ±6.1	6,277	2,498	2,452
2	19312	Berwyn	47.3 ±2.0	12,283	4,449	4,834
3	19073	Newtown Square	46.3 ±3.7	21,915	8,676	8,975
4	19301	Paoli	45.0 ±3.1	7,814	2,984	3,158
5	19343	Glenmoore	44.6 ±3.8	8,450	3,028	3,148
6	19465	Pottstown	44.5 ±1.4	18,564	7,253	7,059
7	19380	West Chester	44.1 ±1.5	49,856	21,077	21,524
8	19348	Kennett Square	43.9 ±1.6	23,621	8,884	9,863
9	19317	Chadds Ford	43.9 ±2.2	10,864	4,044	4,136
10	19350	Landenberg	43.8 ±2.1	10,945	3,904	4,021
11	19344	Honey Brook	43.5 ±4.8	12,827	4,555	4,460
12	19330	Cochranville	43.3 ±3.9	5,957	2,099	2,173
13	19390	West Grove	42.5 ±3.6	12,546	4,267	5,562
14	19355	Malvern	42.0 ±1.1	29,425	11,535	12,334
15	19425	Chester Springs	41.7 ±1.0	17,219	5,710	5,952
16	19320	Coatesville	41.2 ±1.1	55,941	20,462	21,230
17	19333	Devon	41.2 ±4.4	7,471	2,953	3,175
18	19362	Nottingham	41.2 ±1.5	6,092	2,194	2,155
19	19382	West Chester	40.9 ±1.5	54,127	21,440	21,154
20	19335	Downingtown	40.5 ±0.9	53,629	20,002	21,604
21	19087	Wayne	40.3 ±2.6	33,528	11,949	13,057
22	19372	Thorndale	40.3 ±19.0	1,854	804	968
23	19475	Spring City	39.2 ±3.8	12,298	4,850	5,025
24	19460	Phoenixville	38.6 ±1.3	45,423	18,612	19,461
25	19363	Oxford	38.6 ±4.2	18,231	6,234	6,557

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; 31 of 41 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 21,635 households, on 53 carrier routes with 22,567 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 19520 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Chester County has the highest median age?: 19520 (Elverson), at 50.5 (±6.1), among 31 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.