Zip code 78663: Round Mountain, Texas

Q: What city is zip code 78663?

78663 is assigned to Round Mountain, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

Q: What county is 78663 in?

78663 is mostly in Blanco County, but it extends into 3 other counties.

Q: What is the population of 78663?

About 503 people live in 78663, according to the Census Bureau's American Community Survey.

Q: What is the median household income in 78663?

The median household income in 78663 is $168,125.

Q: What zip codes are near 78663?

The closest zip codes to 78663 are 78657, 78636, 78669, 78654, 78620.

Residential delivery areaBlanco CountyCentral Time

Population

503

Median household income

$168K

U.S. $81K

Median home value

$357K

U.S. $333K

Median rent

$1,688/mo

U.S. $1,413

Median age

65.4

U.S. 38.9

Land area

108 sq mi

5 people/sq mi

Boundary is the Census Bureau's ZIP Code Tabulation Area, which closely tracks the postal delivery area.

About 78663

78663 is a rural zip code in Round Mountain, Texas (Blanco County), covering 108 sq mi of land. About 503 people live here, or 5 per square mile. The median resident is 65.4 years old, compared with 38.9 nationally.

The median household earns $168,125 a year, about 2.1× the national median of $80,734. 3.6% of residents live below the poverty line (U.S.: 12.5%). A typical home is valued at $356,800, or 2.1 years of median household income (U.S.: 4.1 years), which makes homes relatively affordable for local earners. 83% of occupied homes are lived in by their owners, and renters pay a median of $1,688 a month.

43% of adults hold a bachelor's degree or higher (U.S.: 36%). Commuters average 50.5 minutes each way, and 14% of workers work from home. The most common jobs among working residents are in business and finance; management; and sales. 17% of them are self-employed (U.S.: 10%).

How 78663 compares

Sorted from highest to lowest national percentile

Median age65.4
99th
U.S. 38.9 · TX 35.618th of 1,817 in TX
Average commute50.5 min
99th
WeaknessU.S. 26.4 min · TX 26.7 min15th of 1,738 in TX
Residents 65 and older51.1%
99th
U.S. 17.2% · TX 13.4%18th of 1,818 in TX
Per capita income$100,059
98th
StrengthU.S. $44,673 · TX $40,75226th of 1,813 in TX
Median household income$168,125
97th
StrengthU.S. $80,734 · TX $78,47627th of 1,712 in TX
Self-employed workers17.2%
95th
U.S. 10% · TX 10.5%273rd of 1,810 in TX
Median earnings per worker$74,526
90th
StrengthU.S. $49,666 · TX $47,57596th of 1,794 in TX
Uninsured rate15.1%
89th
WeaknessU.S. 8.4% · TX 17.1%944th of 1,808 in TX
Homeownership rate83%
85th
StrengthU.S. 65.2% · TX 62.6%458th of 1,792 in TX
Government workers18.9%
80th
U.S. 14.5% · TX 14.1%535th of 1,810 in TX
Income inequality (Gini)0.469
75th
U.S. 0.483 · TX 0.478435th of 1,785 in TX
Bachelor's degree or higher42.7%
70th
U.S. 35.7% · TX 33.8%283rd of 1,811 in TX
Broadband access94.2%
68th
U.S. 91% · TX 91.4%431st of 1,792 in TX
Median gross rent$1,688
67th
U.S. $1,413 · TX $1,403241st of 1,511 in TX
Work from home14%
56th
U.S. 15.1% · TX 14.4%459th of 1,810 in TX
Median home value$356,800
54th
U.S. $332,700 · TX $283,800291st of 1,679 in TX
Veterans5%
38th
U.S. 6.2% · TX 6.2%1,171st of 1,818 in TX
Housing vacancy4.2%
24th
U.S. 10.1% · TX 9.4%1,606th of 1,794 in TX
Tech workers0.9%
11th
U.S. 3.8% · TX 3.8%1,058th of 1,810 in TX
Healthcare workers6%
8th
U.S. 9.7% · TX 8.6%1,269th of 1,810 in TX
Diversity index14.3
7th
U.S. 61.4 · TX 67.11,682nd of 1,818 in TX
Poverty rate3.6%
5th
StrengthU.S. 12.5% · TX 13.8%1,657th of 1,794 in TX
Foreign-born residents0.8%
5th
U.S. 14.1% · TX 17.6%1,661st of 1,818 in TX
Population503
1st
U.S. 334,922,499 · TX 30,188,4241,601st of 1,818 in TX
Population density5/sq mi
1st
U.S. 95/sq mi · TX 116/sq mi1,653rd of 1,818 in TX
Unemployment rate0.4%
1st
StrengthU.S. 5.2% · TX 5.3%1,596th of 1,810 in TX
Rent-burdened renters14.3%
1st
StrengthU.S. 51.1% · TX 51.7%1,506th of 1,692 in TX
Residents under 185%
1st
U.S. 22% · TX 25%1,747th of 1,818 in TX

Measure	78663	Blanco	TX	U.S.	National percentile	Rank in TX
Median age	65.4	51.5	35.6	38.9	99th	18th of 1,817
Average commuteWeakness	50.5 min	29.3 min	26.7 min	26.4 min	99th	15th of 1,738
Residents 65 and older	51.1%	26.4%	13.4%	17.2%	99th	18th of 1,818
Per capita incomeStrength	$100,059	$47,109	$40,752	$44,673	98th	26th of 1,813
Median household incomeStrength	$168,125	$92,425	$78,476	$80,734	97th	27th of 1,712
Self-employed workers	17.2%	15.1%	10.5%	10%	95th	273rd of 1,810
Median earnings per workerStrength	$74,526	$51,579	$47,575	$49,666	90th	96th of 1,794
Uninsured rateWeakness	15.1%	14.7%	17.1%	8.4%	89th	944th of 1,808
Homeownership rateStrength	83%	76.2%	62.6%	65.2%	85th	458th of 1,792
Government workers	18.9%	14.2%	14.1%	14.5%	80th	535th of 1,810
Income inequality (Gini)	0.469	0.422	0.478	0.483	75th	435th of 1,785
Bachelor's degree or higher	42.7%	35.4%	33.8%	35.7%	70th	283rd of 1,811
Broadband access	94.2%	89.2%	91.4%	91%	68th	431st of 1,792
Median gross rent	$1,688	$1,017	$1,403	$1,413	67th	241st of 1,511
Work from home	14%	15.7%	14.4%	15.1%	56th	459th of 1,810
Median home value	$356,800	$483,500	$283,800	$332,700	54th	291st of 1,679
Veterans	5%	8.4%	6.2%	6.2%	38th	1,171st of 1,818
Housing vacancy	4.2%	15.7%	9.4%	10.1%	24th	1,606th of 1,794
Tech workers	0.9%	3.6%	3.8%	3.8%	11th	1,058th of 1,810
Healthcare workers	6%	7.6%	8.6%	9.7%	8th	1,269th of 1,810
Diversity index	14.3	39.3	67.1	61.4	7th	1,682nd of 1,818
Poverty rateStrength	3.6%	8.4%	13.8%	12.5%	5th	1,657th of 1,794
Foreign-born residents	0.8%	5.6%	17.6%	14.1%	5th	1,661st of 1,818
Population	503	12,446	30,188,424	334,922,499	1st	1,601st of 1,818
Population density	5/sq mi	18/sq mi	116/sq mi	95/sq mi	1st	1,653rd of 1,818
Unemployment rateStrength	0.4%	5.9%	5.3%	5.2%	1st	1,596th of 1,810
Rent-burdened rentersStrength	14.3%	43.3%	51.7%	51.1%	1st	1,506th of 1,692
Residents under 18	5%	17.5%	25%	22%	1st	1,747th of 1,818

The percentile is the share of Americans who live in a zip code with a lower value, so the 50th percentile is typical. Rank 1 is the highest value in the state. Both include zip codes with at least 100 residents. Strengths and weaknesses mark measures in the best or worst fifth nationally, where higher or lower is clearly better (income, poverty, education, commute, broadband, insurance and similar). Measures like age or density are left unmarked.

People

Age

Under 5

5–17

18–24

25–34

35–44

11%

45–54

24%

55–64

35%

65–74

17%

75+

Median age

65.4

Under 18

65 and over

51.1%

Race and ethnicity

White92%
Black0%
Hispanic8%
Asian0%
Native American0%
Pacific Islander0%
Other0%
Multiracial0.2%

Diversity index

14.3

U.S. 61.4

Foreign-born

0.8%

U.S. 14.1%

Born in state

65%

Language spoken at home (households)

English only

89%

Spanish

11%

Other Indo-European

Asian / Pacific

Other

Households

Households: 276
Average household size: 1.8
Family households: 58%
Married couples: 55.8%
Living alone: 38.8%
Veterans (of adults): 5%
Male / female: 60% / 40%

Income and poverty

Household income distribution

<$25k

$25–50k

$50–75k

16%

$75–100k

12%

$100–150k

$150–200k

21%

$200k+

30%

Median household income

78663

$168,125

Blanco Co.

$92,425

Texas

$78,476

United States

$80,734

Per capita income

$100,059

U.S. $44,673

Poverty rate

3.6%

U.S. 12.5%

Households earning $150K+

51.1%

U.S. 23%

Income inequality (Gini)

0.469

U.S. 0.483

Housing

Median home value

78663

$356,800

Blanco Co.

$483,500

Texas

$283,800

United States

$332,700

Median gross rent

78663

$1,688

Blanco Co.

$1,017

Texas

$1,403

United States

$1,413

Types of housing

Single-family

93%

2–4 units

5–19 units

20+ units

Mobile home

Boat, RV, van

Housing units: 288
Owner-occupied: 83%
Vacant: 4.2%
Median year built: 2001
Median rooms: 5.6
Renters paying 30%+ of income: 14.3%
Renters paying 50%+ of income: 0%
Home value to income: 2.1× (U.S. 4.1×)

Work and commute

How people get to work

Drove alone

74%

Carpooled

Transit

Walked

Bicycle

Worked from home

14%

Other

Commute time (one way)

<10 min

16%

10–19

26%

20–29

30–44

45–59

60+

44%

Average commute

50.5 min

U.S. 26.4 min

Unemployment

0.4%

U.S. 5.2%

In labor force

47.3%

U.S. 63.5%

Jobs and careers

What employed residents do, wherever they work

Occupations

Business and finance

26%

Management

15%

Sales

11%

Food service

10%

Cleaning and personal care

Engineering and science

Education

Healthcare

Office and admin

Construction and repair

Legal and social services

Computer and math

0.9%

Production

0.9%

Arts, media and sports

Police and fire

Farming, fishing and forestry

Transportation and moving

Industries

Construction

22%

Professional and technical services

11%

Agriculture and mining

11%

Arts and recreation

10%

Restaurants and hotels

10%

Retail

Other services

Education

Health care and social assistance

Admin, support and management

Public administration

Manufacturing

Finance, insurance and real estate

Transportation, warehousing and utilities

Wholesale

Information

Median earnings per worker

$74,526

U.S. $49,666

Self-employed

17.2%

U.S. 10%

Government workers

18.9%

U.S. 14.5%

Nonprofit workers

U.S. 8.8%

Median earnings by type of work

Type of work	78663	U.S.
Management, business, science and arts	$84,500	$74,888
Service	under $2,500	$26,804
Sales and office	$73,385	$40,476
Construction and maintenance	$85,313	$49,199
Production and transportation	—	$39,989

Education, internet and health coverage

Highest education (adults 25+)

No diploma

High school

Some college

39%

Associate's

10%

Bachelor's

37%

Graduate

High school graduate or higher: 96.4%
Bachelor's degree or higher: 42.7%
Graduate or professional degree: 6.1%
Households with broadband: 94.2%
Cable, fiber or DSL: 41.3%
No internet access: 1.4%
Without health insurance: 15.1%
Limited-English households: 4%

Geography

City (USPS): Round Mountain
State: Texas
County: Blanco County
Center point: 30.4155° N, 98.3117° W
Land area: 108 sq mi
Water area: 0.6 sq mi
Time zone: Central Time (UTC-6, UTC-5 in summer)
Zip type: Residential delivery area

78663 spans 4 counties

Blanco County93% of land
Travis County4% of land
Hays County2% of land
Burnet County1% of land

Cities and towns within this zip

Round Mountain2% of zip

Census places overlapping the zip's area. Mail may use a different city name than the municipality.

Zip codes near 78663

Search by radius

Zip	City	Distance	Population	IncomeMedian income	Home value
78657	Horseshoe Bay, TX	9.1 mi	7,591	$91,452	$483,200
78636	Johnson City, TX	9.6 mi	4,134	$72,663	$532,600
78669	Spicewood, TX	11 mi	12,592	$128,000	$671,000
78654	Marble Falls, TX	12 mi	20,650	$74,130	$358,400
78620	Dripping Springs, TX	17 mi	22,860	$153,477	$676,500
78639	Kingsland, TX	19 mi	8,719	$57,742	$245,500
78635	Hye, TX	20 mi	92	$106,458	—
78645	Leander, TX	20 mi	15,256	$113,008	$434,600
78738	Austin, TX	21 mi	31,019	$183,048	$916,300
78734	Austin, TX	22 mi	22,145	$130,784	$677,300
78671	Stonewall, TX	23 mi	413	$61,200	—
78675	Willow City, TX	24 mi	102	$78,472	$451,500

Questions about 78663

What city is zip code 78663?

78663 is assigned to Round Mountain, Texas. The city name is the one the Postal Service prefers for mail addressed to this zip code.

What county is 78663 in?

78663 is mostly in Blanco County, but it extends into 3 other counties.

What is the population of 78663?

About 503 people live in 78663, according to the Census Bureau's American Community Survey.

What time zone is 78663 in?

78663 is in Central Time.

What is the median household income in 78663?

The median household income in 78663 is $168,125.

What zip codes are near 78663?

The closest zip codes to 78663 are 78657, 78636, 78669, 78654, 78620.

Demographic figures are 2020–2024 American Community Survey 5-year estimates for ZIP Code Tabulation Area 78663, from the U.S. Census Bureau. Small areas have wide margins of error. How we build these numbers.