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Sunnyvale, Texas
Location within Dallas County and the state of Texas
Location within Dallas County and the state of Texas
Country United States
State Texas
County Dallas
 • Total 16.79 sq mi (43.49 km2)
 • Land 16.52 sq mi (42.78 km2)
 • Water 0.27 sq mi (0.71 km2)
486 ft (148 m)
 • Total 5,130
 • Estimate 
 • Density 414.13/sq mi (159.90/km2)
Time zone UTC-6 (CST)
 • Summer (DST) UTC-5 (CDT)
ZIP code
Area code(s) 214, 469, 972
FIPS code 48-71156
GNIS feature ID 1348079

Sunnyvale is a rural, sparsely populated, and very affluent town in Dallas County, Texas, United States. It is the easternmost city completely within Dallas County. The population was 5,130 at the 2010 census.


The town now called Sunnyvale was inhabited by various Native American tribes in the years before the European conquest of the Americas. It became under the rule of Spain in the 18th century, very close to the boundary of Spanish and French territory (although this boundary was carried upward a bit in 1819; see Adams-Onís Treaty.) During this time, the area was relatively underdeveloped. However, some settlers migrated to Texas and would eventually settle in Sunnyvale. In 1821, the town became a possession of Mexico when Mexico received its independence from Spain. After the Texas Revolution, the area once again changed hands, under the Republic of Texas. This is when the town started to develop. During this time, settlers migrated to present-day Sunnyvale, naming the hamlet they founded Long Creek.1. In 1845 Texas became a United States state. More settlers migrated to the area. In the 1860s, the town was briefly part of the Confederate States of America. As more people arrived, eventually three new towns sprang up in the area: New Hope, Tripp, and Hatterville. New Hope was the most prosperous of these. It had many shops and stores, a fair called Gala Days, and a newspaper, the New Hope News. It was neighboring Mesquite's biggest rival. This all ended in 1921, when a storm blew the town away 2. Many buildings were damaged and the prosperous days were over. From this year on to the 1950s, the four towns had no new developments, remaining stagnant. In the year 1953, the hamlets of Hatterville, New Hope, Long Creek, and Tripp merged under the name Sunnyvale. The name was chosen in a contest from a local school. Today, there are many reminders of Sunnyvale's rich history, like the old New Hope School; the Tripp First Baptist Church, built in 1882; and many antique houses. The Long Creek Cemetery in southern Sunnyvale is over 150 years old, and the first recorded burial there is that of Leona Crownover Caldwell, dated October 2, 1855. There are also veterans from most major American wars, including the War of 1812, the Civil War (both Union and Confederate veterans), the World Wars, and others. Some of the oldest burials in the cemetery include James Truss and Priscilla Dulaney Truss, both born in 1799 2. On December 26, 2015 the town was struck by an EF-4 tornado causing extensive damage to the Plantation RV park, the tornado then grew and moved northeast into Garland and Rowlett killing 12 people and injuring dozens.


Sunnyvale is located at 32°48′13″N 96°34′11″W / 32.80361°N 96.56972°W / 32.80361; -96.56972 (32.803646, -96.569654).

According to the United States Census Bureau, the town has a total area of 16.8 square miles (44 km2), all of it land.


Historical population
Census Pop.
1960 969
1970 995 2.7%
1980 1,404 41.1%
1990 2,228 58.7%
2000 2,693 20.9%
2010 5,130 90.5%
2019 (est.) 6,841 33.4%
U.S. Decennial Census

As of the census of 2010, there were 5,130 people, 891 households, and 775 families residing in the town. The population density was 160.8 people per square mile (62.1/km2). There were 928 housing units at an average density of 55.4 per square mile (21.4/km2). The racial makeup of the town was 68.4% White, 20.6% Asian, 6.2% African American, 0.4% Native American, 1.9% other races, and 2.7% from two or more races. Hispanic or Latino of any race were 8.7% of the population.

There were 891 households, out of which 43.3% had children under the age of 18 living with them, 78.8% were married couples living together, 5.1% had a female householder with no husband present, and 13.0% were non-families. 11.2% of all households were made up of individuals, and 4.5% had someone living alone who was 65 years of age or older. The average household size was 3.02 and the average family size was 3.27.

In the town, the population was spread out, with 29.6% under the age of 18, 5.1% from 18 to 24, 25.7% from 25 to 44, 30.7% from 45 to 64, and 9.0% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 101.1 males. For every 100 females age 18 and over, there were 97.8 males.

The median income for a household in the town was $86,952, and the median income for a family was $98,999. Males had a median income of $63,750 versus $37,297 for females. The per capita income for the town was $38,910. About 2.5% of families and 3.2% of the population were below the poverty line, including 1.1% of those under age 18 and 5.0% of those age 65 or over.

Parks and recreation

Sunnyvale is along Lake Ray Hubbard, which has recreational activities for Sunnyvale residents.

There are also four parks in the city: Jobson Park, Town Center Park, Samuell Farm North, and Robert Vineyard Park.


Sunnyvale Independent School District takes students in Sunnyvale who are in grades pre-kindergarten through 12. Sunnyvale High School's facility opened in 2009.

Prior to fall 2007, Sunnyvale did not operate a high school; for high school Sunnyvale's students were zoned to the Mesquite Independent School District (MISD), attending North Mesquite High School.

Sunnyvale has a public library, located on Tower Place in the northwestern portion of the city.

All of Dallas County (Sunnyvale included) is in the service area of Dallas College (formerly Dallas County Community College).

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