|• Mayor||Saji George|
|• Total||16.79 sq mi (43.49 km2)|
|• Land||16.52 sq mi (42.78 km2)|
|• Water||0.27 sq mi (0.71 km2)|
|Elevation||486 ft (148 m)|
|• Density||414.1/sq mi (159.90/km2)|
|Time zone||UTC-6 (CST)|
|• Summer (DST)||UTC-5 (CDT)|
|Area code(s)||214, 469, 945, 972|
|GNIS feature ID||1348079|
Sunnyvale is a town in Dallas County, Texas, United States. It is the easternmost city completely within Dallas County. The population was 7,893 in 2020. The town had a median household income in 2020 of $137,656. Within the last two decades the towns demographics drastically changed. The town once criticized for lack of diversity  now has a majority (50.67%) of its citizens POC, BIPOC, and AAPI members.
The area now occupied by Sunnyvale was inhabited by various Native American tribes in the years before the European conquest of the Americas. It came 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 area 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. In 1845 Texas became a U.S. state.
As more people arrived, eventually three new hamlets 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. 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. Since, 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.
In March 2012, Sunnyvale, Texas was named the whitest town in North Texas by D Magazine. The reason that Sunnyvale was named the whitest town in North Texas was based on an initial, U.S. District Judge Jerry Buchmeyern study that deducted that out of 2,228 residents in Sunnyvale, that only 16 of them were Black American or African American. Town of Sunnyvale for decades used infrastructure, red-lining, and town ordinances to keep low income housing from developing. They were successfully sued by ACLU and agreed to a small apartment complex away from the main town. The apartment complex is next to a major highway, sewage plant, and water treatment facility.
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 many.
On March 31, 2023 Sunnyvale was put on a shelter in place ordinance  after a suspect led a miles-long driving excursion from the police spanning three counties. It led to the assailant leaving his car armed and with his whereabouts unknown for numerous hours within the town.  Sunnyvale Police came under scrutiny for their delayed efforts and time to find the suspect. 
On June 5, 2023, Sunnyvale made national headlines after story broke of a mass shooting incident. According to Sunnyvale Police, a family of five were shot. A woman was killed and four children were injured.
|U.S. Decennial Census|
|Black or African American (NH)||801||10.15%|
|Native American or Alaska Native (NH)||27||0.34%|
|Pacific Islander (NH)||9||0.11%|
|Some Other Race (NH)||48||0.61%|
|Hispanic or Latino||851||10.78%|
Once an overwhelmingly non-Hispanic white community, the 2020 U.S. census determined 49.37% of the population were non-Hispanic white; this reflected nationwide and statewide demographic trends of diversification prominent in the beginning of the 21st century. Asian Americans increased to 25.49% of the population, and Hispanic or Latinos of any race were 10.78%; Black and African Americans grew to 10.15% of the local population, followed by multiracial Americans at 3.14%. American Indians and Alaska Natives were 0.34% of the population; some other race 0.61%; and Pacific Islanders made up 0.11%.
Government and infrastructure
The town council includes six members and the mayor. As of September 2020, Saji George is the mayor of Sunnyvale. As of the same year the council members are Ryan Finch, Kevin Clark, Mark Egan, Mark Eldridge, Larry Allen, and Jonathan Freeman.
In 2000 a U.S. district court ruled that Sunnyvale had enacted planning and zoning practices that were in place to exclude the development of apartments and small single family lots. Sunnyvale and the Inclusive Communities Project (ICP) entered into an agreement in which Sunnyvale was given three years to identify 70 housing units favorable for purchase or rent by low income individuals and families. Since 2008, three developers have considered low income developments in Sunnyvale, but no applications have been filed with the Town. ICP filed a lawsuit against Sunnyvale in 2009, seeking the development of low income units at a site in Sunnyvale. Sunnyvale's government responded, saying that it had taken appropriate steps to approve the creation of low income housing.
"The Town of Sunnyvale received an order from Honorable Judge Reed O'Connor regarding the Dews vs Town of Sunnyvale case, finding the Town in contempt of court for its failure to implement the Settlement Stipulation in the case by April 15, 2008. The Town has reviewed, and understands Judge O'Connor's order, yet is clearly disappointed in the ruling, because the Town believes that it did all that was possible to comply with the settlement under the circumstances. But Judge Reed O'Connor found the Town guilty of contempt of court and the town has to July 15, 2011, to comply and make available 70 low income units that qualifies for section 8 vouchers.
In October 2019, the Sunnyvale Police Department was established and began the start-up phase of standing up a new Police Department. The Town was contracted with the Dallas County Sheriff's Office for many years, and they continued to provide law enforcement services to the Town of Sunnyvale through October 2020, when Sunnyvale Police Department took over operations.
Sunnyvale is in Texas State House District 112, represented by Republican Angie Chen Button. Sunnyvale is in Texas Senate District 2, represented by Republican Senator Bob Hall.
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.
Parks and recreation
There are also four parks in the city: Jobson Park, Town Center Park, Samuell Farm North, and Robert Vineyard Park.
- "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved August 7, 2020.
- "U.S. Census website". United States Census Bureau. Retrieved January 31, 2008.
- "US Board on Geographic Names". United States Geological Survey. October 25, 2007. Retrieved January 31, 2008.
- "Explore Census Data". data.census.gov. Retrieved May 22, 2022.
- "U.S. Census Bureau QuickFacts: Sunnyvale town, Texas". www.census.gov. Retrieved June 29, 2023.
- "Sunnyvale: The Whitest Town in North Texas". D Magazine. February 22, 2012. Retrieved June 29, 2023.
- "Sunnyvale, texas - History". February 6, 2006. Archived from the original on February 6, 2006. Retrieved October 1, 2022.
- Korosec, Thomas. "Sunnyvale: The Whitest Town in North Texas". D Magazine. Retrieved October 1, 2022.
- Object, object (June 5, 2023). "Sunnyvale, Texas: Police search for suspects after shooting leaves 1 dead, 4 injured, including children". CNN. Retrieved June 29, 2023.
- "3 children remain hospitalized following shooting in Texas suburb: Police". ABC News. Retrieved June 29, 2023.
- "Neighbor describes witnessing deadly Sunnyvale shooting - CBS Texas". www.cbsnews.com. June 5, 2023. Retrieved June 29, 2023.
- Staff • •, NBCDFW (June 5, 2023). "Woman killed, man and 3 kids injured when gunman opens fire on a car in Sunnyvale". NBC 5 Dallas-Fort Worth. Retrieved June 29, 2023.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
- "Census of Population and Housing". Census.gov. Retrieved June 4, 2015.
- https://www.census.gov/[not specific enough to verify]
- "About the Hispanic Population and its Origin". www.census.gov. Retrieved May 18, 2022.
- Korosec, Thomas (March 2012). "Sunnyvale: The Whitest Town in North Texas". D Magazine. Retrieved October 30, 2019.
- Ura, Alexa; Kao, Jason; Astudillo, Carla; Essig, Chris (August 12, 2021). "People of color make up 95% of Texas' population growth, and cities and suburbs are booming, 2020 census shows". The Texas Tribune. Retrieved October 1, 2022.
- Frey, William H. (July 1, 2020). "The nation is diversifying even faster than predicted, according to new census data". Brookings. Retrieved October 1, 2022.
- "Town Council." Town of Sunnyvale. Retrieved on November 4, 2009.
- "Mayor." Town of Sunnyvale. Retrieved on September 24, 2019.
- "Press Release of March 23, 2010." Town of Sunnyvale. Following this decision, the town council has decided to allow low-income housing off of Planers road. However, in October 2013, no such apartments have been completed.
- "Education." Town of Sunnyvale. Retrieved on November 4, 2009.
- "Library > Contact Information." City of Sunnyvale. Retrieved on November 4, 2009.
- Texas Education Code: Sec. 130.176. DALLAS COUNTY COMMUNITY COLLEGE DISTRICT SERVICE AREA.
- "Recreation." Town of Sunnyvale. Retrieved on November 4, 2009.
- "Parks & Recreation | Town of Sunnyvale, TX - Official Website".