Which ZIP code in Penobscot County has the lowest median age?

04469 (Orono), at 19.6 (±0.2), among 34 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.

Youngest ZIP codes in Penobscot County, ME

These are the 25 ZIP codes in Penobscot County with the lowest median age, out of 34 with at least 1,000 residents. 04469 (Orono, 19.6), 04473 (Orono, 26.0) and 04468 (Old Town, 38.3) lead the list. There is no single "best" ZIP code in Penobscot County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Youngest ZIP codes in Penobscot County

Rank	ZIP	Mailing city	Median age	Residents	Households	Residential mailboxes
1	04469	Orono	19.6 ±0.2	3,531	0	—
2	04473	Orono	26.0 ±2.5	8,371	3,308	3,059
3	04468	Old Town	38.3 ±3.3	9,291	3,943	4,108
4	04969	Plymouth	39.5 ±6.3	1,319	527	570
5	04456	Levant	39.7 ±2.2	3,069	1,268	1,209
6	04412	Brewer	40.1 ±4.8	9,652	4,250	4,350
7	04401	Bangor	41.4 ±1.0	44,854	19,843	21,023
8	04444	Hampden	41.6 ±2.6	9,371	3,606	4,068
9	04418	Greenbush	41.6 ±5.9	1,649	642	631
10	04434	Etna	41.9 ±3.4	1,252	493	507
11	04488	Stetson	42.2 ±5.1	1,151	445	513
12	04928	Corinna	42.6 ±4.9	2,192	895	944
13	04411	Bradley	42.6 ±9.7	1,645	644	497
14	04427	Corinth	42.7 ±6.0	2,990	1,211	1,137
15	04461	Milford	43.3 ±6.0	3,095	1,277	954
16	04450	Kenduskeag	43.9 ±5.8	1,333	513	581
17	04429	Holden	45.3 ±2.5	5,008	2,235	2,010
18	04422	Charleston	45.4 ±5.9	1,117	443	487
19	04430	East Millinocket	45.9 ±8.7	1,495	663	759
20	04419	Carmel	46.4 ±4.5	2,941	1,276	1,207
21	04449	Hudson	47.5 ±5.8	1,251	514	627
22	04474	Orrington	49.5 ±3.3	3,853	1,639	1,228
23	04448	Howland	49.7 ±11.8	1,540	559	167
24	04410	Bradford	49.7 ±8.0	1,254	476	539
25	04953	Newport	50.3 ±3.2	3,143	1,495	1,564

How we ranked them

Ranked by median age of all residents, lowest first (ACS 5-year estimates, 2020–2024). ZIP codes need at least 1,000 residents to be ranked; 34 of 47 qualify.

Which of these to mail, and why

Younger ZIP codes skew toward renters, students and young families: fitness, quick-service food, apartments, entertainment and first-time-buyer offers.

The top five ZIP codes on this list hold 9,046 households. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 04469 on the EDDM route map

More rankings

Businesses that mail these ZIP codes

Map it and price it

EDDM guides

Frequently asked questions

Which ZIP code in Penobscot County has the lowest median age?: 04469 (Orono), at 19.6 (±0.2), among 34 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median age of all residents, lowest 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.