ZIP Code 78621
standardSource:
Elgin · Bastrop County · Texas
- Population
- 21,659
- Median income
- $98,534
- Median home value
- $320,800
- Bachelor's or higher
- 24.3%
- Land area
- 483.5 sq mi
45/sq mi
▲ 29% vs US
higher than 80% of US ZIPs
▲ 15% vs US
higher than 70% of US ZIPs
Median age 36.2
Chicago
ZIP code 78621 in Elgin, Texas has a population of 21,659. The median household income is $98,534, which is 29% above the national average. Median home value is $320,800, 15% above the US average. 24.3% of residents hold a bachelor's degree or higher.
ZIP code 78621 is classified by USPS as a standard delivery area and covers roughly 483.5 square miles in Elgin, Bastrop County, Texas. The area is home to 21,659 residents, producing a population density of 45 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 78621 against Texas and the nation.
On the economic side, the median household income for ZIP 78621 sits at $98,534 (30% above the Texas average), while per-capita income is $38,211. The poverty rate stands at 6.4% and the unemployment rate at 3.9%. On housing, the median home value is $320,800 (30% above the state average) with median rent at $1,387 per month, and 81.1% of occupied units are owner-occupied, a direct signal of whether 78621 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 24.3% of adults hold a bachelor's degree or higher, the median age is 36.2, and the average commute is 38 minutes. We also surface 2 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Bastrop County, so you can benchmark 78621 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 78621
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 78621.
- Construction
Construction
94 establishments
- Retail trade
Retail trade
46 establishments
- Accommodation and food services
Accommodation and food services
42 establishments
- Other services (except public administration)
Other services (except public administration)
41 establishments
- Professional, scientific, and technical services 33
Professional, scientific, and technical services
33 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 78621, Elgin, TX · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
21,659
Population
483.5
Area (sq mi)
45
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 78621?
36.2
Median Age
49.4%
Male
50.6%
Female
20.3%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$98,534
Median Household Income
+30% vs state
$38,211
Per Capita Income
6.4%
Poverty Rate
3.9%
Unemployment Rate
37.5 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
11,036
Total Housing Units
10,175
Occupied Units
861
Vacant Units
2.97
Avg Household Size
Occupancy Type
$320,800
Median Home Value
+30% vs state
$1,387
Median Rent
2000
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+3.2%
YoY Change (2024)
305
HPI Index (2000 = 100)
+205%
Total Change Since 2000
Home values in ZIP 78621 have increased 3.2% over the past year (2024). Since 2000, this ZIP has seen +205% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +4.8% | 223 |
| 2021 | +15.6% | 258 |
| 2022 | +26.4% | 326 |
| 2023 | -9.2% | 296 |
| 2024 | +3.2% | 305 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 401 business establishments in ZIP 78621, employing approximately 4,513 people with a combined annual payroll of $244,210,000.
401
Businesses
4,513
Employees
$244.2M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 94 | 23.4% |
| Retail trade | 46 | 11.5% |
| Accommodation and food services | 42 | 10.5% |
| Other services (except public administration) | 41 | 10.2% |
| Professional, scientific, and technical services | 33 | 8.2% |
| Health care and social assistance | 29 | 7.2% |
| Manufacturing | 27 | 6.7% |
| Transportation and warehousing | 21 | 5.2% |
| Finance and insurance | 16 | 4.0% |
| Administrative and support and waste management and remediation services | 12 | 3.0% |
| Wholesale trade | 10 | 2.5% |
| Real estate and rental and leasing | 9 | 2.2% |
| Arts, entertainment, and recreation | 6 | 1.5% |
| Educational services | 5 | 1.3% |
| Information | 4 | 1.0% |
| Mining, quarrying, and oil and gas extraction | 3 | 0.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 78621 vs 78615 →
More ZIP Codes in Bastrop County
Related Areas
Frequently Asked Questions
What county is ZIP code 78621 in? ▼
What is the population of ZIP code 78621? ▼
What is the median household income in ZIP 78621? ▼
What is the average home value in ZIP 78621? ▼
What is the demographic makeup of ZIP 78621? ▼
How many businesses are in ZIP code 78621? ▼
What are the main industries in ZIP code 78621? ▼
How have home values changed in ZIP code 78621? ▼
What is the education level in ZIP code 78621? ▼
What is the average commute time in ZIP 78621? ▼
What percentage of residents own vs. rent in ZIP 78621? ▼
What is the poverty rate in ZIP code 78621? ▼
ZIP Code Research Guides
Official Data Resources for Elgin, TX
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.