Which ZIP code in Kitsap County has the highest median age?

98340 (Hansville), at 66.2 (±4.6), 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.

Oldest ZIP codes in Kitsap County, WA

These are the 17 ZIP codes in Kitsap County with the highest median age, out of 17 with at least 1,000 residents. 98340 (Hansville, 66.2), 98342 (Indianola, 56.3) and 98110 (Bainbridge Island, 49.0) 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.

Oldest ZIP codes in Kitsap County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	98340	Hansville	66.2 ±4.6	2,721	1,285	1,152
2	98342	Indianola	56.3 ±3.5	1,338	636	298
3	98110	Bainbridge Island	49.0 ±2.7	24,631	9,887	11,043
4	98359	Olalla	48.9 ±2.7	4,581	1,730	1,814
5	98346	Kingston	47.3 ±4.7	9,920	4,010	4,080
6	98370	Poulsbo	44.4 ±1.3	33,655	13,501	13,875
7	98392	Suquamish	43.7 ±3.6	2,984	1,238	1,156
8	98367	Port Orchard	43.5 ±2.7	31,756	12,227	13,128
9	98380	Seabeck	41.7 ±5.5	5,471	1,843	1,864
10	98383	Silverdale	41.2 ±1.9	21,604	9,056	9,900
11	98311	Bremerton	38.0 ±2.1	28,168	10,458	11,217
12	98366	Port Orchard	37.9 ±2.0	36,965	14,296	15,211
13	98312	Bremerton	36.8 ±1.6	36,307	14,436	14,483
14	98310	Bremerton	35.1 ±1.5	22,643	9,422	10,029
15	98337	Bremerton	33.4 ±2.9	7,370	3,138	3,415
16	98315	Silverdale	22.0 ±0.9	6,112	1,172	979
17	98314	Bremerton	21.8 ±0.9	1,186	33	—

How we ranked them

Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 17 of 20 qualify.

Which of these to mail, and why

Older ZIP codes respond to health care, hearing and vision, Medicare plans, home safety, estate planning and services that come to the door.

The top five ZIP codes on this list hold 17,548 households, on 33 carrier routes with 18,387 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 98340 on the EDDM route map

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Frequently asked questions

Which ZIP code in Kitsap County has the highest median age?: 98340 (Hansville), at 66.2 (±4.6), among 17 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, highest first (ACS 5-year estimates, 2020–2024).
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.