Round Mountain ZIP Code List — Blanco County, TX

There is one unique ZIP code in Round Mountain, Texas and it is 78663. Area code: 830.

ZIP codes

108.48

sq mi land

0.64

sq mi water

830

area code

Round Mountain, TX ZIP code map

About Round Mountain, TX

Round Mountain, Texas is a small yet charming community located in the heart of Blanco County. Known for its serene landscapes and friendly atmosphere, it offers residents and visitors alike a taste of rural Texas. The town is characterized by its commitment to preserving the natural beauty and rich culture of the area.

Location & geography

Round Mountain is situated in central Texas and stretches across a land area of 108.48 square miles, with a small water area of 0.64 square miles. This town is conveniently located near several other cities, including Johnson City, which is 14 miles to the east, Fredericksburg at 22 miles to the southwest, and Marble Falls at 26 miles to the southeast. The terrain is predominantly rural, with rolling hills and a backdrop of Texas Hill Country scenery.

Community & economy

The character of Round Mountain is rooted in community spirit, with residents enjoying a peaceful, small-town lifestyle. Local industries may include agriculture and small businesses that support the surrounding rural economy, providing jobs and services to the community. Daily life often revolves around family-oriented activities, local events, and enjoying the picturesque setting.

Transportation

Round Mountain is accessible via several highways, notably State Highway 71, which connects the town to larger cities and amenities. The nearest major airport is located in San Antonio, approximately 70 miles to the southeast, providing further connectivity for residents and visitors. Public transit options are limited, making personal vehicles the primary mode of transportation in this rural area.

History

Round Mountain was founded in the 19th century and has developed as a quintessential Texan community. Its economy has historically been grounded in agriculture, with local farms contributing to the overall culture and lifestyle of the area. Notable events in its development are closely tied to the growth of nearby Blanco County and the agricultural traditions that continue to this day.

Did you know?

One surprising fact about Round Mountain is its enveloping natural beauty which attracts visitors who seek hiking and nature activities. The area is also recognized for its quaint charm, reflecting the hearty spirit of rural Texas living.

ZIP codes for Round Mountain, TX (1)

ZIP code	City	County	Map
78663	Round Mountain	Blanco	View map

Demographics & statistics

599

Population

57.9

Median age

$150,593

Median household income

$77,109

Per capita income

$178,800

Median home value

Median monthly rent

89.6%

Home ownership

2.2%

Poverty rate

17.5%

Unemployment

314

Housing units

20.7%

Bachelor's or higher

Age distribution

Male Female

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	14	2.3%
18 and over	585	97.7%
65 and over	163	27.2%
Median age	57.9 years

Race & ethnicity

White 83.7%

Native Hawaiian / Pacific Islander 10.2%

Hispanic or Latino 3.1%

Other race 3.1%

Group	Count	%
White	517	83.7%
Native Hawaiian / Pacific Islander	63	10.2%
Hispanic or Latino	19	3.1%
Other race	19	3.1%

Household income

Under $10k 4.1%

$15k–$25k 1.6%

$25k–$35k 2.8%

$35k–$50k 9.8%

$50k–$75k 1.3%

$75k–$100k 23.4%

$100k–$150k 2.5%

$150k–$200k 27.8%

$200k+ 26.6%

Range	% of households
Under $10k	4.1%
$15k–$25k	1.6%
$25k–$35k	2.8%
$35k–$50k	9.8%
$50k–$75k	1.3%
$75k–$100k	23.4%
$100k–$150k	2.5%
$150k–$200k	27.8%
$200k+	26.6%
Median income	$150,593

Housing

Home values

Under $50k 8.5%

$50k–$100k 1.4%

$100k–$150k 4.2%

$150k–$200k 52.7%

$200k–$300k 10.6%

$300k–$500k 7.1%

$500k–$1M 7.4%

$1M+ 8.1%

Housing overview

Metric	Value
Median home value	$178,800
Median rent / month	$0
Owner occupied	89.6%
Renter occupied	10.4%
Vacant	8.9%
Single-family detached	87.3%
Large apartment buildings	0.0%
Mobile homes	8.4%
Median rooms	5.9
Avg household size (owned)	1.88

Year built

Era	%
2020 or later	0.6%
2010–2019	11.5%
2000–2009	29.7%
1990–1999	8.4%
1980–1989	8.6%
1970–1979	19.0%
1960–1969	0.9%
1950–1959	2.0%
1940–1949	3.7%
1939 or earlier	15.6%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	15.3%
2 bedrooms	13.3%
3 bedrooms	47.0%
4 bedrooms	6.9%
5+ bedrooms	16.7%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	19.3%
2 vehicles	53.5%
3 or more	27.2%

Heating fuel

Fuel type	%
Utility gas	17.7%
Electricity	50.3%
Propane / LP gas	30.7%
Wood	1.3%

Households & families

Household type	Count	%
Married-couple family	217	68.7%
Cohabiting couple	4	1.3%
Male householder, no spouse	47	14.9%
Female householder, no spouse	48	15.2%
Households with children under 18	6	1.9%
Households with seniors (65+)	128	40.5%
Average household size	1.90

Marital status

Status	Male	Female
Never married	7.3%	3.0%
Married	87.8%	78.9%
Separated	0.0%	0.0%
Widowed	3.1%	11.3%
Divorced	1.8%	6.8%

Education

Less than 9th grade 2.3%

Some HS, no diploma 1.1%

HS graduate 22.6%

Some college, no degree 47.1%

Associate's degree 6.3%

Bachelor's degree 18.6%

Graduate / professional 2.1%

Metric	%
HS diploma or higher	96.7%
Bachelor's or higher	20.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	2	8.3%
Elementary school	4	16.7%
High school	18	75.0%
College / grad school	0	0.0%

Employment

Industry of employment

Construction 43.4%

Education & healthcare 24.3%

Agriculture & mining 16.5%

Professional & management 6.3%

Public administration 3.6%

Manufacturing 2.7%

Arts, food & hospitality 2.1%

Transportation & utilities 0.6%

Other services 0.6%

Occupation

Category	%
Management, business & arts	54.5%
Service	3.6%
Sales & office	34.4%
Natural resources & construction	6.3%
Production & transportation	1.2%

Employment type

Type	%
Private sector	77.5%
Government	11.7%
Self-employed	10.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.8%
Carpool	0.3%
Public transit	0.0%
Walk	0.6%
Other means	0.0%
Avg commute (minutes)	33.4

Poverty

All people 2.2%

Under 18 years 0.0%

18 and over 2.2%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	34.8%
Retirement income	19.3%
Supplemental Security	0.6%
Cash public assistance	0.3%
Food stamps / SNAP	0.6%

Health indicators

Condition	%
High blood pressure	37.4%
High cholesterol	41.2%
Heart disease	7.3%
Stroke	3.1%
Asthma	8.8%
Arthritis	26.6%
Kidney disease	3.0%
Pulmonary disease	7.4%
Cancer	7.6%

Behavior / access	%
Binge drinking	17.7%
No physical activity	22.0%
Less than 7 hrs sleep	31.7%
Fair or poor health	15.1%
Poor mental health	13.7%
Poor physical health	11.2%
No health insurance	18.7%
Visited doctor (checkup)	72.9%
Visited dentist	62.5%
Cholesterol screening	92.7%
Teeth loss	10.9%

Veterans & disability

Veterans	Count	%
Civilian veterans	21	3.6%

Disability	%
Any disability	20.5%
Under 18	0.0%
18–64 years	17.5%
65 and over	30.1%

Health insurance coverage

Type	%
Private insurance	63.6%
Public insurance	29.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	599	100.0%
Spanish	19	3.2%
Other Indo-European	19	3.2%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	599	100.0%
Born in same state	537	89.6%
Born in different state	379	63.3%
Foreign born	62	10.4%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Italian	101	16.9%
French	45	7.5%
Polish	35	5.8%

Ancestry	Count	%
English	34	5.7%
Arab	13	2.2%

Technology access

Metric	% of households
Computer access	52.8%
Internet access	100.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Round Mountain, TX?

Round Mountain, TX has one ZIP code: 78663.

What is the main ZIP code for Round Mountain, TX?

The primary ZIP code for Round Mountain, TX is 78663. The city uses area code 830 for phone service.

What county is Round Mountain, TX in?

Round Mountain is located in Blanco County, Texas.

How many ZIP codes are in Round Mountain, TX?

Round Mountain, TX has 1 ZIP code.

What is the ZIP code for Round Mountain in Blanco County, Texas?

Round Mountain, Texas is located in ZIP code 78663, which serves this unincorporated community in Blanco County.

Does Round Mountain, TX have multiple ZIP codes, or is it served by a single postal code?

Round Mountain is served by a single ZIP code, 78663, which covers the entire unincorporated community in Blanco County.