Elgin, TX ZIP code
The ZIP code for Elgin, Texas is 78621. It is in Bastrop County.
- Population in these ZIPs
- 30,411
- Avg. median income
- $98,500population-weighted
- Typical home value
- $285,100population-weighted
- Metro area
- Austin-Round Rock-San Marcos, TX
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Elgin, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 78621 | 30,411 | $98,534 | $285,100 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Elgin
Frequently asked questions
What is the ZIP code for Elgin, TX?
The ZIP code for Elgin, TX is 78621.
What county is Elgin, Texas in?
Elgin ZIP codes are in Bastrop County.