Oldest ZIP codes in Kennebec County, ME
These are the 22 ZIP codes in Kennebec County with the highest median age, out of 22 with at least 1,000 residents. 04349 (Kents Hill, 58.8), 04284 (Wayne, 55.6) and 04910 (Albion, 52.9) lead the list. There is no single "best" ZIP code in Kennebec 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 Kennebec County
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 04349 | Kents Hill | 58.8 ±4.2 | 1,383 | 620 | 513 |
| 2 | 04284 | Wayne | 55.6 ±5.3 | 1,101 | 533 | 501 |
| 3 | 04910 | Albion | 52.9 ±7.5 | 2,204 | 957 | 842 |
| 4 | 04927 | Clinton | 50.7 ±4.3 | 3,385 | 1,394 | 1,149 |
| 5 | 04347 | Hallowell | 50.3 ±7.9 | 2,592 | 1,289 | 1,011 |
| 6 | 04346 | Randolph | 49.6 ±3.4 | 1,610 | 774 | 710 |
| 7 | 04355 | Readfield | 48.1 ±7.6 | 2,651 | 1,027 | 901 |
| 8 | 04917 | Belgrade | 47.3 ±14.6 | 3,351 | 1,377 | 1,340 |
| 9 | 04352 | Mount Vernon | 47.1 ±6.2 | 1,716 | 735 | 731 |
| 10 | 04351 | Manchester | 46.9 ±4.6 | 2,424 | 983 | 932 |
| 11 | 04350 | Litchfield | 46.4 ±10.2 | 3,680 | 1,519 | 1,614 |
| 12 | 04259 | Monmouth | 46.0 ±1.3 | 3,610 | 1,492 | 1,333 |
| 13 | 04344 | Farmingdale | 45.8 ±5.7 | 3,017 | 1,439 | 460 |
| 14 | 04989 | Vassalboro | 44.5 ±3.6 | 4,592 | 1,960 | 1,925 |
| 15 | 04364 | Winthrop | 43.6 ±5.3 | 6,191 | 2,522 | 2,397 |
| 16 | 04363 | Windsor | 43.5 ±8.0 | 2,690 | 1,071 | 732 |
| 17 | 04330 | Augusta | 42.6 ±1.7 | 26,690 | 12,370 | 11,962 |
| 18 | 04345 | Gardiner | 41.9 ±2.3 | 12,579 | 5,083 | 5,224 |
| 19 | 04963 | Oakland | 41.4 ±5.3 | 7,524 | 3,121 | 3,415 |
| 20 | 04358 | South China | 40.9 ±5.9 | 4,526 | 1,895 | 1,625 |
| 21 | 04901 | Waterville | 39.2 ±2.8 | 27,870 | 11,451 | 11,559 |
| 22 | 04988 | Unity | 27.8 ±2.1 | 1,894 | 588 | 663 |
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; 22 of 27 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 4,793 households, on 8 carrier routes with 4,016 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 04349 on the EDDM route map
More rankings
- Richest ZIP codes in Kennebec County
- ZIP codes with the highest home values in Kennebec County
- ZIP codes with the highest homeownership in Kennebec County
- ZIP codes with the most families with kids in Kennebec County
- ZIP codes with the most new movers in Kennebec County
- Youngest ZIP codes in Kennebec County
- Fastest-growing ZIP codes in Kennebec County
- All Kennebec County ZIP codes
Businesses that mail these ZIP codes
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EDDM guides
Frequently asked questions
- Which ZIP code in Kennebec County has the highest median age?
- 04349 (Kents Hill), at 58.8 (±4.2), among 22 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.