Oldest ZIP codes in the San Antonio Area
These are the 25 ZIP codes in the San Antonio area with the highest median age, out of 104 with at least 1,000 residents. 78055 (Medina, 65.1), 78623 (Fischer, 60.0) and 78003 (Bandera, 51.4) lead the list. There is no single "best" ZIP code in the San Antonio area; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.
Oldest ZIP codes in the San Antonio area
| Rank | ZIP | Mailing city | Median age | Residents | Households | Residential mailboxes |
|---|---|---|---|---|---|---|
| 1 | 78055 | Medina | 65.1 ±6.8 | 1,753 | 724 | 537 |
| 2 | 78623 | Fischer | 60.0 ±4.4 | 1,645 | 638 | 1,091 |
| 3 | 78003 | Bandera | 51.4 ±7.8 | 9,967 | 4,374 | 3,860 |
| 4 | 78263 | San Antonio | 51.0 ±10.7 | 4,253 | 1,676 | 2,745 |
| 5 | 78063 | Pipe Creek | 50.8 ±3.4 | 10,778 | 4,131 | 4,407 |
| 6 | 78013 | Comfort | 50.7 ±5.2 | 4,809 | 2,017 | 2,243 |
| 7 | 78133 | Canyon Lake | 50.4 ±3.2 | 21,959 | 9,427 | 11,668 |
| 8 | 78056 | Mico | 49.9 ±7.7 | 2,526 | 941 | 1,157 |
| 9 | 78266 | San Antonio | 49.8 ±4.0 | 7,338 | 2,651 | 3,698 |
| 10 | 78123 | Mc Queeney | 48.9 ±21.0 | 2,127 | 878 | 1,083 |
| 11 | 78039 | La Coste | 47.2 ±5.8 | 1,862 | 727 | 312 |
| 12 | 78124 | Marion | 46.6 ±6.2 | 6,157 | 2,378 | 3,954 |
| 13 | 78070 | Spring Branch | 46.2 ±2.6 | 20,200 | 7,621 | 9,863 |
| 14 | 78638 | Kingsbury | 45.4 ±11.4 | 2,135 | 706 | 1,121 |
| 15 | 78112 | Elmendorf | 43.9 ±4.3 | 9,769 | 3,617 | 4,748 |
| 16 | 78205 | San Antonio | 43.9 ±16.4 | 1,538 | 1,237 | 1,716 |
| 17 | 78132 | New Braunfels | 43.7 ±1.5 | 40,953 | 14,736 | 20,815 |
| 18 | 78009 | Castroville | 43.1 ±5.2 | 9,151 | 2,980 | 3,998 |
| 19 | 78114 | Floresville | 42.9 ±1.7 | 24,283 | 8,620 | 9,285 |
| 20 | 78006 | Boerne | 42.8 ±0.9 | 44,560 | 16,283 | 21,141 |
| 21 | 78160 | Stockdale | 42.6 ±3.3 | 4,885 | 1,724 | 1,840 |
| 22 | 78023 | Helotes | 42.2 ±2.2 | 28,462 | 9,547 | 11,153 |
| 23 | 78884 | Utopia | 41.9 ±6.9 | 1,171 | 448 | 42 |
| 24 | 78264 | San Antonio | 41.6 ±5.2 | 11,841 | 4,092 | 5,919 |
| 25 | 78248 | San Antonio | 41.5 ±3.1 | 14,488 | 5,761 | 6,141 |
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; 104 of 121 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 11,543 households, on 26 carrier routes with 12,640 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.
Open 78055 on the EDDM route map
More rankings
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- ZIP codes with the highest homeownership in the San Antonio area
- ZIP codes with the most families with kids in the San Antonio area
- ZIP codes with the most new movers in the San Antonio area
- Youngest ZIP codes in the San Antonio area
- Fastest-growing ZIP codes in the San Antonio area
- Oldest ZIP codes in Atascosa County
- Oldest ZIP codes in Bexar County
- Oldest ZIP codes in Comal County
- San Antonio ZIP code map
Businesses that mail these ZIP codes
Map it and price it
EDDM guides
Frequently asked questions
- Which ZIP code in the San Antonio area has the highest median age?
- 78055 (Medina), at 65.1 (±6.8), among 104 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.