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

18038 (Danielsville), at 24.7%, among 19 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 Northampton County, PA

These are the 19 ZIP codes in Northampton County with the fastest population growth, out of 19 with at least 1,000 residents. 18038 (Danielsville, 24.7%), 18091 (Wind Gap, 21.6%) and 18085 (Tatamy, 13.9%) lead the list. There is no single "best" ZIP code in Northampton 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 Northampton County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	18038	Danielsville	24.7%	3,549	1,395	1,201
2	18091	Wind Gap	21.6%	6,547	2,673	—
3	18085	Tatamy	13.9%	1,175	387	—
4	18045	Easton	13.2%	30,429	12,115	13,139
5	18067	Northampton	9.6%	19,590	7,902	8,770
6	18042	Easton	7.6%	45,532	16,376	17,723
7	18072	Pen Argyl	5.9%	6,938	2,729	2,785
8	18018	Bethlehem	5.3%	32,965	14,119	15,396
9	18015	Bethlehem	4.2%	34,852	12,150	12,996
10	18020	Bethlehem	4.0%	21,204	7,791	8,347
11	18040	Easton	4.0%	17,256	6,668	7,229
12	18014	Bath	3.7%	12,097	4,617	5,275
13	18055	Hellertown	3.2%	12,117	4,703	5,317
14	18017	Bethlehem	3.0%	40,640	16,597	16,654
15	18064	Nazareth	2.2%	26,970	10,477	10,536
16	18032	Catasauqua	1.7%	9,555	4,083	4,152
17	18088	Walnutport	-1.9%	8,488	3,296	3,763
18	18013	Bangor	-2.4%	17,597	6,755	7,591
19	18343	Mount Bethel	-14.5%	3,637	1,561	1,708

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; 19 of 24 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 24,472 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 18038 on the EDDM route map

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Frequently asked questions

Which ZIP code in Northampton County has the fastest population growth?: 18038 (Danielsville), at 24.7%, among 19 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.