Youngest ZIP codes in Sullivan County, TN
These are the 9 ZIP codes in Sullivan County with the lowest median age, out of 9 with at least 1,000 residents. 37665 (Kingsport, 36.9), 37620 (Bristol, 43.8) and 37660 (Kingsport, 44.0) lead the list. There is no single "best" ZIP code in Sullivan 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 Sullivan County
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 37665 | Kingsport | 36.9 ±5.5 | 4,741 | 1,840 | 2,452 |
| 2 | 37620 | Bristol | 43.8 ±1.3 | 38,494 | 16,515 | 18,510 |
| 3 | 37660 | Kingsport | 44.0 ±2.0 | 40,996 | 18,500 | 19,731 |
| 4 | 37686 | Piney Flats | 44.1 ±3.8 | 9,495 | 3,659 | 4,223 |
| 5 | 37618 | Bluff City | 45.1 ±2.8 | 12,548 | 5,291 | 5,671 |
| 6 | 37664 | Kingsport | 46.7 ±1.7 | 28,267 | 12,647 | 13,179 |
| 7 | 37663 | Kingsport | 47.1 ±2.8 | 14,230 | 6,268 | 6,578 |
| 8 | 37617 | Blountville | 47.2 ±3.4 | 14,744 | 5,451 | 6,427 |
| 9 | 37694 | Watauga | 50.5 ±7.3 | 1,729 | 752 | 769 |
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; 9 of 9 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 45,805 households, on 83 carrier routes with 50,587 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 37665 on the EDDM route map
More rankings
- Richest ZIP codes in Sullivan County
- ZIP codes with the highest home values in Sullivan County
- ZIP codes with the highest homeownership in Sullivan County
- ZIP codes with the most families with kids in Sullivan County
- ZIP codes with the most new movers in Sullivan County
- Oldest ZIP codes in Sullivan County
- Fastest-growing ZIP codes in Sullivan County
- All Sullivan County ZIP codes
Businesses that mail these ZIP codes
Map it and price it
EDDM guides
Frequently asked questions
- Which ZIP code in Sullivan County has the lowest median age?
- 37665 (Kingsport), at 36.9 (±5.5), among 9 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.