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

17027 (Grantham), at 41.5%, among 15 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 Cumberland County, PA

These are the 15 ZIP codes in Cumberland County with the fastest population growth, out of 15 with at least 1,000 residents. 17027 (Grantham, 41.5%), 17015 (Carlisle, 16.5%) and 17065 (Mount Holly Springs, 16.0%) lead the list. There is no single "best" ZIP code in Cumberland 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 Cumberland County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	17027	Grantham	41.5%	2,801	197	—
2	17015	Carlisle	16.5%	24,385	9,811	10,624
3	17065	Mount Holly Springs	16.0%	4,389	1,587	1,793
4	17050	Mechanicsburg	14.2%	43,571	16,923	18,419
5	17055	Mechanicsburg	12.8%	42,006	18,318	19,377
6	17011	Camp Hill	8.6%	39,664	14,407	15,057
7	17013	Carlisle	6.4%	38,513	15,936	15,735
8	17025	Enola	6.0%	17,648	7,522	8,841
9	17070	New Cumberland	4.4%	16,830	7,116	7,446
10	17043	Lemoyne	2.3%	5,852	2,913	3,086
11	17257	Shippensburg	-1.1%	29,204	10,786	11,169
12	17324	Gardners	-2.6%	4,433	1,735	1,695
13	17007	Boiling Springs	-5.8%	5,865	2,150	2,299
14	17241	Newville	-7.8%	11,181	4,314	4,884
15	17240	Newburg	-19.0%	3,241	1,192	1,166

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; 15 of 18 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 46,836 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 17027 on the EDDM route map

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Frequently asked questions

Which ZIP code in Cumberland County has the fastest population growth?: 17027 (Grantham), at 41.5%, among 15 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.