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

04627 (Deer Isle), at 34.9%, among 18 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 Hancock County, ME

These are the 18 ZIP codes in Hancock County with the fastest population growth, out of 18 with at least 1,000 residents. 04627 (Deer Isle, 34.9%), 04634 (Franklin, 31.7%) and 04421 (Castine, 21.9%) lead the list. There is no single "best" ZIP code in Hancock 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 Hancock County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	04627	Deer Isle	34.9%	2,137	909	768
2	04634	Franklin	31.7%	2,374	1,055	886
3	04421	Castine	21.9%	1,362	352	110
4	04640	Hancock	14.5%	2,450	1,117	1,115
5	04684	Surry	7.2%	1,836	841	737
6	04614	Blue Hill	5.8%	2,813	1,308	1,024
7	04429	Holden	5.2%	5,008	2,235	2,010
8	04676	Sedgwick	5.2%	1,130	532	511
9	04679	Southwest Harbor	4.2%	1,553	731	456
10	04605	Ellsworth	2.8%	14,529	6,414	7,111
11	04622	Cherryfield	1.6%	1,050	505	571
12	04607	Gouldsboro	-0.7%	1,142	564	565
13	04416	Bucksport	-0.8%	5,497	2,589	2,062
14	04609	Bar Harbor	-4.1%	5,244	2,479	2,870
15	04664	Sullivan	-5.4%	1,246	532	536
16	04476	Penobscot	-5.8%	1,154	531	569
17	04472	Orland	-8.4%	1,852	890	883
18	04660	Mount Desert	-9.3%	1,072	517	526

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; 18 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 4,274 households, on 9 carrier routes with 3,616 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 04627 on the EDDM route map

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Frequently asked questions

Which ZIP code in Hancock County has the fastest population growth?: 04627 (Deer Isle), at 34.9%, among 18 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.