Oldest ZIP codes in Knoxville, TN
These are the 17 ZIP codes in Knoxville, TN with the highest median age, out of 17 with at least 1,000 residents. 37938 (Knoxville, 47.8), 37922 (Knoxville, 41.7) and 37914 (Knoxville, 40.5) lead the list. There is no single "best" ZIP code in Knoxville; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Oldest ZIP codes in Knoxville
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 37938 | Knoxville | 47.8 ±3.6 | 17,437 | 7,148 | 8,038 |
| 2 | 37922 | Knoxville | 41.7 ±1.4 | 40,394 | 14,967 | 16,783 |
| 3 | 37914 | Knoxville | 40.5 ±2.4 | 21,478 | 9,005 | 9,790 |
| 4 | 37917 | Knoxville | 39.9 ±1.9 | 24,615 | 12,358 | 12,978 |
| 5 | 37918 | Knoxville | 39.8 ±1.7 | 45,971 | 19,187 | 20,806 |
| 6 | 37931 | Knoxville | 37.7 ±1.6 | 31,842 | 12,538 | 15,009 |
| 7 | 37919 | Knoxville | 37.3 ±2.6 | 31,754 | 14,303 | 15,675 |
| 8 | 37912 | Knoxville | 37.0 ±2.0 | 21,505 | 10,014 | 11,425 |
| 9 | 37932 | Knoxville | 36.8 ±1.1 | 25,424 | 9,142 | 12,484 |
| 10 | 37923 | Knoxville | 36.6 ±2.0 | 30,131 | 12,990 | 14,471 |
| 11 | 37924 | Knoxville | 36.6 ±2.2 | 14,420 | 5,588 | 6,730 |
| 12 | 37909 | Knoxville | 36.5 ±2.4 | 16,774 | 7,783 | 7,691 |
| 13 | 37921 | Knoxville | 34.6 ±1.3 | 28,717 | 11,634 | 12,936 |
| 14 | 37920 | Knoxville | 33.6 ±1.5 | 44,995 | 18,396 | 21,136 |
| 15 | 37902 | Knoxville | 32.7 ±2.7 | 2,412 | 1,560 | 2,079 |
| 16 | 37915 | Knoxville | 31.4 ±6.6 | 5,991 | 3,310 | 4,005 |
| 17 | 37916 | Knoxville | 20.6 ±0.3 | 15,583 | 3,079 | 4,374 |
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 18 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 62,665 households, on 111 carrier routes with 68,395 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 37938 on the EDDM route map
More rankings
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- ZIP codes with the most new movers in Knoxville
- Youngest ZIP codes in Knoxville
- Fastest-growing ZIP codes in Knoxville
- Oldest ZIP codes in Knox County
- All Knoxville ZIP codes
Businesses that mail these ZIP codes
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EDDM guides
Frequently asked questions
- Which ZIP code in Knoxville has the highest median age?
- 37938 (Knoxville), at 47.8 (±3.6), 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.