Which ZIP code in Chester County has the fastest population growth?

19383 (West Chester), at 109.4%, 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.

Fastest-growing ZIP codes in Chester County, PA

These are the 25 ZIP codes in Chester County with the fastest population growth, out of 31 with at least 1,000 residents. 19383 (West Chester, 109.4%), 19311 (Avondale, 29.9%) and 19341 (Exton, 23.5%) 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.

Fastest-growing ZIP codes in Chester County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	19383	West Chester	109.4%	6,537	180	—
2	19311	Avondale	29.9%	11,692	3,619	2,960
3	19341	Exton	23.5%	21,709	9,069	10,127
4	19301	Paoli	22.6%	7,814	2,984	3,158
5	19330	Cochranville	11.3%	5,957	2,099	2,173
6	19073	Newtown Square	10.9%	21,915	8,676	8,975
7	19355	Malvern	9.9%	29,425	11,535	12,334
8	19520	Elverson	9.8%	6,277	2,498	2,452
9	19335	Downingtown	9.5%	53,629	20,002	21,604
10	19475	Spring City	9.2%	12,298	4,850	5,025
11	19317	Chadds Ford	9.0%	10,864	4,044	4,136
12	19343	Glenmoore	8.2%	8,450	3,028	3,148
13	19333	Devon	8.1%	7,471	2,953	3,175
14	19460	Phoenixville	8.0%	45,423	18,612	19,461
15	19425	Chester Springs	8.0%	17,219	5,710	5,952
16	19365	Parkesburg	7.7%	8,006	2,857	3,050
17	19344	Honey Brook	7.0%	12,827	4,555	4,460
18	19465	Pottstown	6.2%	18,564	7,253	7,059
19	19312	Berwyn	5.7%	12,283	4,449	4,834
20	19363	Oxford	5.5%	18,231	6,234	6,557
21	19362	Nottingham	4.2%	6,092	2,194	2,155
22	19352	Lincoln University	3.4%	11,484	3,243	2,816
23	19320	Coatesville	2.4%	55,941	20,462	21,230
24	19087	Wayne	2.3%	33,528	11,949	13,057
25	19348	Kennett Square	-1.3%	23,621	8,884	9,863

How we ranked them

Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have at least 1,000 residents. ZIP codes need at least 1,000 residents to be ranked; 31 of 41 qualify.

Which of these to mail, and why

Growing ZIP codes add households every year, which means new homes, new routes and customers without a go-to provider yet. Check the route map: new subdivisions can appear as new carrier routes.

The top five ZIP codes on this list hold 17,951 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 19383 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 fastest population growth?: 19383 (West Chester), at 109.4%, among 31 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by the change in ACS population estimates between the 2015–2019 and 2020–2024 releases. Both are 5-year averages, and ZIP code areas were redrawn for 2020, so a large change can partly reflect a boundary change. Both periods must have 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.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.