Elgin, TX ZIP Codes
One ZIP code serves Elgin, Texas: 78621. Together they are home to 30,411 residents in 10,175 households. That is more than the 11,563 people counted inside Elgin city limits, because these ZIP codes reach past its boundary.
Elgin city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 11,563 |
| Households | 4,375 |
| Median household income | $91,114 |
| Median home value | $326,400 |
| Median age | 36.6 |
| Median rent | $1,440 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 30,411 |
| Households (sum of ZIP codes) | 10,175 |
| Median household income, range across ZIP codes | $98,534 (78621) to $98,534 (78621) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $98,534 |
| Homeowners | 81.1% |
| Households with kids under 18 | 35.7% |
| Moved in the past year | 9.4% |
| Carrier routes in EDDM2GO's route library | 15 routes, 12,832 homes (1 of 1 ZIP codes) |
Every ZIP code in Elgin
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 78621 | Elgin | 30,411 | 10,175 | $98,534 | $320,800 | 81.1% | 35.7% | 9.4% | 15 | 13,257 | 4% of its land; mailing city |
A ZIP code is listed for Elgin when at least 10% of its land lies inside Elgin city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Elgin. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Elgin.
Counties
- Bastrop County — 10 ZIP codes
Metro maps
- Austin ZIP code map — 89 ZIP codes
Price a mailing to Elgin ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Elgin, TX?
- 78621. A ZIP code is listed for Elgin when at least 10% of its land lies inside Elgin city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Elgin.
- What is the population of Elgin, TX?
- The Census Bureau counts 11,563 residents inside Elgin city limits (ACS 2020–2024). The 1 ZIP code that serve Elgin hold 30,411 residents in all.
- What is the median household income in Elgin, TX?
- $91,114 inside Elgin city limits, per the Census Bureau. Across its ZIP codes the medians run from $98,534 to $98,534.
- How many carrier routes and mailboxes are in Elgin, TX?
- For the 1 of 1 ZIP codes in EDDM2GO's stored route library: 15 carrier routes reaching 12,832 residential and 423 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.