ZIP code 78621: Elgin, TX
78621 is a ZIP code in Elgin, Texas, mainly in Bastrop County, part of the Austin-Round Rock-San Marcos, TX metro area. About 30,411 people live here.
- Population
- 30,411
- Median household income
- $98,534
- Typical home value
- $285,100-6.9% in 12 months
- Median rent
- $1,387gross, per month
- Median age
- 36.2
- Homeowners
- 81.1%of occupied homes
Shaded: ZIP code 78621's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 78621 details
| City | Elgin |
|---|---|
| State | Texas |
| County | Bastrop County (also partly Travis County, Williamson County, Lee County) |
| Metro area | Austin-Round Rock-San Marcos, TX |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 177.7 sq mi, plus 1 sq mi of water |
| Population density | 171 people per sq mi |
| Bachelor's degree or higher | 24.3% of adults 25+ |
| Average commute | 37.5 minutes |
| Center coordinates | 30.33702, -97.36042 |
Median rent in 78621 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $1,353/mo |
| 2 bedrooms | $1,245/mo |
| 3 bedrooms | $1,676/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 78621
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 78650 | Mc Dade, TX | 8.7 mi | 2,409 |
| 78615 | Coupland, TX | 8.9 mi | 1,637 |
| 78653 | Manor, TX | 9.6 mi | 41,291 |
| 78763 | Austin, TX | 11.9 mi | — |
| 78602 | Bastrop, TX | 14.3 mi | 38,190 |
| 76578 | Thrall, TX | 15.5 mi | 1,762 |
| 78660 | Pflugerville, TX | 15.7 mi | 124,834 |
| 78724 | Austin, TX | 15.7 mi | 31,103 |
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
Buying a home in 78621?
A typical home in ZIP code 78621 is worth about $285,100 (Zillow Home Value Index). The median household here earns $98,534 a year. See what buying here would cost per month, with Texas average taxes and insurance filled in.
Monthly payment for a $285,100 homeWhat can a $98,534 income afford?Rental property numbers
About ZIP code 78621
What city is ZIP code 78621?
ZIP code 78621 is in Elgin, TX, in Bastrop County.
What county is ZIP code 78621 in?
78621 is mainly in Bastrop County, Texas, and partly in Travis County, Williamson County and Lee County.
What is the population of ZIP code 78621?
About 30,411 people live in ZIP code 78621, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 78621 in?
78621 is in Central Time (UTC−6). It observes daylight saving time.