Oldest ZIP codes in Charleston, SC
These are the 10 ZIP codes in Charleston, SC with the highest median age, out of 10 with at least 1,000 residents. 29455 (Johns Island, 49.8), 29401 (Charleston, 44.0) and 29412 (Charleston, 40.7) lead the list. There is no single "best" ZIP code in Charleston; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Oldest ZIP codes in Charleston
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 29455 | Johns Island | 49.8 ±3.4 | 27,576 | 12,249 | — |
| 2 | 29401 | Charleston | 44.0 ±9.7 | 9,339 | 4,186 | 5,356 |
| 3 | 29412 | Charleston | 40.7 ±1.3 | 39,256 | 16,758 | 19,579 |
| 4 | 29492 | Charleston | 39.3 ±2.6 | 20,436 | 9,468 | 13,285 |
| 5 | 29414 | Charleston | 38.1 ±1.6 | 44,727 | 19,322 | 22,728 |
| 6 | 29407 | Charleston | 38.0 ±1.0 | 36,706 | 16,920 | 18,120 |
| 7 | 29406 | Charleston | 32.9 ±2.3 | 32,001 | 12,979 | 15,118 |
| 8 | 29403 | Charleston | 30.0 ±1.6 | 22,533 | 10,862 | 12,090 |
| 9 | 29409 | Charleston | 20.0 ±0.7 | 2,056 | 7 | — |
| 10 | 29424 | Charleston | 19.4 ±0.3 | 1,243 | 65 | — |
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; 10 of 11 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 61,983 households. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 29455 on the EDDM route map
More rankings
- Richest ZIP codes in Charleston
- ZIP codes with the highest home values in Charleston
- ZIP codes with the highest homeownership in Charleston
- ZIP codes with the most families with kids in Charleston
- ZIP codes with the most new movers in Charleston
- Youngest ZIP codes in Charleston
- Fastest-growing ZIP codes in Charleston
- Oldest ZIP codes in Charleston County
- All Charleston ZIP codes
Businesses that mail these ZIP codes
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EDDM guides
Frequently asked questions
- Which ZIP code in Charleston has the highest median age?
- 29455 (Johns Island), at 49.8 (±3.4), among 10 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.