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

98380 (Seabeck), at 35.1%, among 17 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 Kitsap County, WA

These are the 17 ZIP codes in Kitsap County with the fastest population growth, out of 17 with at least 1,000 residents. 98380 (Seabeck, 35.1%), 98312 (Bremerton, 16.8%) and 98310 (Bremerton, 10.1%) lead the list. There is no single "best" ZIP code in Kitsap 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 Kitsap County

Rank	ZIP	Mailing city	Population change	Residents	Households	Residential mailboxes
1	98380	Seabeck	35.1%	5,471	1,843	1,864
2	98312	Bremerton	16.8%	36,307	14,436	14,483
3	98310	Bremerton	10.1%	22,643	9,422	10,029
4	98370	Poulsbo	7.6%	33,655	13,501	13,875
5	98367	Port Orchard	6.5%	31,756	12,227	13,128
6	98366	Port Orchard	5.9%	36,965	14,296	15,211
7	98337	Bremerton	2.8%	7,370	3,138	3,415
8	98342	Indianola	1.1%	1,338	636	298
9	98311	Bremerton	0.8%	28,168	10,458	11,217
10	98110	Bainbridge Island	0.6%	24,631	9,887	11,043
11	98346	Kingston	-0.4%	9,920	4,010	4,080
12	98383	Silverdale	-1.5%	21,604	9,056	9,900
13	98340	Hansville	-5.5%	2,721	1,285	1,152
14	98315	Silverdale	-6.1%	6,112	1,172	979
15	98392	Suquamish	-6.2%	2,984	1,238	1,156
16	98359	Olalla	-9.2%	4,581	1,730	1,814
17	98314	Bremerton	-60.1%	1,186	33	—

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; 17 of 20 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 51,429 households, on 86 carrier routes with 53,379 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 98380 on the EDDM route map

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Frequently asked questions

Which ZIP code in Kitsap County has the fastest population growth?: 98380 (Seabeck), at 35.1%, among 17 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.