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

19967 (Millville), at 90.7%, among 21 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 Sussex County, DE

These are the 21 ZIP codes in Sussex County with the fastest population growth, out of 21 with at least 1,000 residents. 19967 (Millville, 90.7%), 19945 (Frankford, 42.4%) and 19940 (Delmar, 35.2%) lead the list. There is no single "best" ZIP code in Sussex 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 Sussex County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	19967	Millville	90.7%	2,376	1,267	2,195
2	19945	Frankford	42.4%	9,640	3,960	5,844
3	19940	Delmar	35.2%	7,540	2,469	2,826
4	19968	Milton	32.8%	15,486	6,431	8,773
5	19930	Bethany Beach	31.0%	3,014	1,551	4,215
6	19966	Millsboro	22.4%	35,884	15,435	20,624
7	19958	Lewes	21.7%	31,938	15,233	22,799
8	19963	Milford	13.3%	23,500	9,880	10,040
9	19975	Selbyville	12.4%	10,862	5,085	8,125
10	19973	Seaford	8.4%	26,834	10,266	11,201
11	19971	Rehoboth Beach	8.3%	14,886	7,587	13,429
12	19956	Laurel	8.0%	16,327	6,332	6,570
13	19951	Harbeson	6.8%	2,245	905	1,387
14	19950	Greenwood	6.2%	7,918	3,250	2,934
15	19941	Ellendale	5.0%	3,435	1,192	1,608
16	19960	Lincoln	4.1%	6,774	2,306	2,792
17	19947	Georgetown	3.8%	20,760	6,735	8,472
18	19939	Dagsboro	1.2%	7,490	3,183	3,980
19	19970	Ocean View	0.2%	8,524	4,046	7,429
20	19933	Bridgeville	-2.8%	10,597	4,047	4,667
21	21874	Willards	-9.7%	1,693	666	969

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; 21 of 23 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 15,678 households, on 32 carrier routes with 23,853 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 19967 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Sussex County has the fastest population growth?: 19967 (Millville), at 90.7%, among 21 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.