ZIP Code 78681
standardSource:
Round Rock · Williamson County · Texas
- Population
- 50,606
- Median income
- $137,819
- Median home value
- $497,300
- Bachelor's or higher
- 58.0%
- Land area
- 56.3 sq mi
899/sq mi
▲ 81% vs US
higher than 95% of US ZIPs
▲ 79% vs US
higher than 87% of US ZIPs
Median age 39.3
Chicago
ZIP code 78681 in Round Rock, Texas has a population of 50,606. The median household income is $137,819, which is 81% above the national average. Median home value is $497,300, 79% above the US average. 58.0% of residents hold a bachelor's degree or higher.
ZIP code 78681 is classified by USPS as a standard delivery area and covers roughly 56.3 square miles in Round Rock, Williamson County, Texas. The area is home to 50,606 residents, producing a population density of 899 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 78681 against Texas and the nation.
On the economic side, the median household income for ZIP 78681 sits at $137,819 (82% above the Texas average), while per-capita income is $59,301. The poverty rate stands at 5.5% and the unemployment rate at 3.0%. On housing, the median home value is $497,300 (101% above the state average) with median rent at $1,963 per month, and 73.9% of occupied units are owner-occupied, a direct signal of whether 78681 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 58.0% of adults hold a bachelor's degree or higher, the median age is 39.3, and the average commute is 24 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Williamson County, so you can benchmark 78681 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 78681
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 78681.
- Professional, scientific, and technical services
Professional, scientific, and technical services
260 establishments
- Health care and social assistance
Health care and social assistance
226 establishments
- Accommodation and food services
Accommodation and food services
146 establishments
- Construction
Construction
119 establishments
- Retail trade
Retail trade
119 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 78681, Round Rock, 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
50,606
Population
56.3
Area (sq mi)
899
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 78681?
39.3
Median Age
51.3%
Male
48.7%
Female
16.9%
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?
$137,819
Median Household Income
+82% vs state
$59,301
Per Capita Income
5.5%
Poverty Rate
3.0%
Unemployment Rate
23.6 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?
20,781
Total Housing Units
20,135
Occupied Units
646
Vacant Units
2.80
Avg Household Size
Occupancy Type
$497,300
Median Home Value
+101% vs state
$1,963
Median Rent
1999
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
+1.9%
YoY Change (2024)
330
HPI Index (2000 = 100)
+230%
Total Change Since 2000
Home values in ZIP 78681 have increased 1.9% over the past year (2024). Since 2000, this ZIP has seen +230% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +6.0% | 227 |
| 2021 | +25.7% | 285 |
| 2022 | +27.1% | 363 |
| 2023 | -10.7% | 324 |
| 2024 | +1.9% | 330 |
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 1,432 business establishments in ZIP 78681, employing approximately 19,609 people with a combined annual payroll of $1,265,360,000.
1,432
Businesses
19,609
Employees
$1.3B
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 260 | 18.2% |
| Health care and social assistance | 226 | 15.8% |
| Accommodation and food services | 146 | 10.2% |
| Construction | 119 | 8.3% |
| Retail trade | 119 | 8.3% |
| Other services (except public administration) | 115 | 8.0% |
| Real estate and rental and leasing | 102 | 7.1% |
| Finance and insurance | 70 | 4.9% |
| Administrative and support and waste management and remediation services | 69 | 4.8% |
| Wholesale trade | 49 | 3.4% |
| Manufacturing | 32 | 2.2% |
| Educational services | 32 | 2.2% |
| Information | 31 | 2.2% |
| Arts, entertainment, and recreation | 26 | 1.8% |
| Transportation and warehousing | 24 | 1.7% |
| Management of companies and enterprises | 8 | 0.6% |
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 78681 vs 78717 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 78717 | Austin, TX | 22,538 | 3.5 mi |
| 78665 | Round Rock, TX | 35,985 | 4.9 mi |
| 78729 | Austin, TX | 27,108 | 5.5 mi |
| 78664 | Round Rock, TX | 52,932 | 5.1 mi |
| 78727 | Austin, TX | 26,689 | 7.2 mi |
| 78728 | Austin, TX | 20,299 | 5.7 mi |
| 78613 | Cedar Park, TX | 65,099 | 6.3 mi |
| 78628 | Georgetown, TX | 23,727 | 7.6 mi |
| 78758 | Austin, TX | 44,072 | 10.1 mi |
| 78759 | Austin, TX | 38,891 | 9.3 mi |
More ZIP Codes in Williamson County
Related Areas
Frequently Asked Questions
What county is ZIP code 78681 in? ▼
What is the population of ZIP code 78681? ▼
What is the median household income in ZIP 78681? ▼
What is the average home value in ZIP 78681? ▼
What is the demographic makeup of ZIP 78681? ▼
How many businesses are in ZIP code 78681? ▼
What are the main industries in ZIP code 78681? ▼
How have home values changed in ZIP code 78681? ▼
What is the education level in ZIP code 78681? ▼
What is the average commute time in ZIP 78681? ▼
What percentage of residents own vs. rent in ZIP 78681? ▼
What is the poverty rate in ZIP code 78681? ▼
ZIP Code Research Guides
Official Data Resources for Round Rock, 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.