Richardson is a city in Dallas and Collin counties in the U.S. state of Texas. As of the 2020 United States census, the city had a total population of 119,469. Richardson is an inner suburb of the city of Dallas.

It is home to the University of Texas at Dallas and the Telecom Corridor, with a high concentration of telecommunications companies. More than 5,000 businesses have operations within Richardson's 28 square miles (73 km2), including many of the world's largest telecommunications and networking companies, such as AT&T, Verizon, Cisco Systems, Samsung, ZTE, MetroPCS, Texas Instruments, Qorvo, and Fujitsu. Richardson's largest employment base is provided by the insurance industry, with Blue Cross and Blue Shield of Texas's headquarters, a regional hub for the insurance company GEICO, regional offices for United Healthcare, and one of State Farm Insurance's three national regional hubs located in the community.

Emigrants from Kentucky and Tennessee settled near present-day Richardson in the 1840s. Before the Civil War, a small settlement called Breckenridge, located near present-day Richland College, was established. In 1873, the Houston and Texas Central Railway built a depot northwest of Breckenridge. After the H.&T.C. purchased acreage for a townsite from two local land-owners, the site was surveyed and laid out in blocks and lots, which the railroad began selling in 1874. The town was named after the secretary of the Houston & Texas Central Railroad, Alfred S. Richardson.

In 1908, the Texas Electric Railway, an electric railway known as the Interurban, connected Richardson to Denison, Waco, Corsicana and Dallas. In 1910 the population was approximately 600. A red brick schoolhouse was built in 1914 and is now the administrative office for the Richardson Independent School District. In 1924 the Red Brick Road, the present-day Greenville Avenue, was completed. The completion of the road brought increased traffic, population and property values. The town incorporated and elected a mayor in 1925. In 1940 the population was approximately 740.

After World War II the city experienced major increases in population, which stood at approximately 1,300 by 1950. Throughout the 1950s the city continued to see growth including the opening of the Collins Radio Richardson office, Central Expressway, a police department, shopping centers, and many homes. Texas Instruments opened its offices in Dallas on the southern border of Richardson in 1956. This was followed by significant gains in land values, population, and economic status. In the 1960s Richardson experienced additional growth including several new parks, facilities, and the creation of the University of Texas at Dallas within the city limits. By 1972 the population was approximately 56,000. Residential growth continued through the 1970s and slowed in the 1980s. Commercial development increased throughout the 1980s. Richardson had a population of 74,840 according to the 1990 census. Population increases throughout the 1990s were primarily from development of the northeast part of the city. The city of Buckingham, after being completely surrounded by Richardson, was annexed into the city in 1996.

Richardson had a population of 91,802 as of the 2000 census. By 2002 Richardson had four Dallas Area Rapid Transit (DART) light rail stations and had built the Eisemann Center for Performing Arts and Corporate Presentations and the adjacent Galatyn Park urban center, which has a 2-acre public pedestrian plaza, a luxury hotel, and mixed-use development. Richardson was a "dry city" with no alcohol sales until November 2006, when the local option election passed to allow the sale of beer and wine in grocery and convenience stores. In the fall of 2008 Peter Perfect, a Style Network television show, came to Richardson. The business-makeover show remodeled SpiritWear, an apparel and embroidery store in the city's historic downtown area. The episode first aired on January 22, 2009. It was the first episode of the series to be filmed outside of California.

The cities of Dallas, Plano and Garland constitute almost all of the Richardson border apart from the municipality's extreme northeastern "panhandle."

Richardson borders the Lake Highlands area of northeast Dallas to the south, North Dallas to the southwest, Far North Dallas to the west, West Plano to the northwest, East Plano to the north, the city of Murphy to the northeast, Sachse to the east, and Garland to the southeast.

According to the United States Census Bureau, the city has a total area of 28.6 square miles (74.2 km2), of which 28.6 square miles (74.0 km2) is land and 0.08 square miles (0.2 km2), or 0.32%, is water.

Approximately two-thirds of the city is in Dallas County, with the northern third of the city in Collin County. Of the 28.6 square miles (74.2 km2) contained within the borders of the city of Richardson, 18.2 square miles (47 km2) lie in Dallas County; the other 9.2 square miles (24 km2) are in Collin County.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Richardson has a humid subtropical climate, abbreviated "Cfa" on climate maps.

As of the 2020 United States census, there were 119,469 people, 44,136 households, and 29,113 families residing in the city. As of the 2015 American Community Survey, there were 106,123 people, 40,020 households, and 27,327 families residing in the city. The population density was 3,213.9 people per square mile (1,241.1/km2). There were 36,530 housing units at an average density of 1,278.9 per square mile (493.8/km2).

There were 40,020 households, out of which 31.9% had children under the age of 18 living with them, 54.2% were married couples living together, 10.3% had a female householder with no husband present, and 31.7% were non-families. 24.6% of all households were made up of individuals, and 7.8% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 3.15.

In the city the population was spread out, with 21.9% under the age of 18, 10.5% from 18 to 24, 28.2% from 25 to 44, 25.8% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 37.2 years. For every 100 females, there were 99.7 males.

In the 2015 American Community Survey 5-year Estimates males had a median income of $60,709 versus $50,404 for females. The per capita income for the city was $29,551. About 5.7% of families and 10.6% of the population were below the poverty line, including 11.7% of those under age 18 and 4.3% of those age 65 or over. According to a 2015 estimate, the median income for a family in Richardson was $72,427 and a median home price of $198,900.

By 1990, 10% of the Richardson population was not born in the United States, which increased to 18.1% in 2000. According to the 2015 American Community Survey 5-year Estimates, this figure was 24.3%. As of 2015, of those not born in the United States, almost 50% had arrived in the United States after 2000.

Dallas County has an estimated 275,000 Arab Americans, with many of them settling in Richardson. Many of them have come from Egypt, Iraq, Syria, Palestine, Jordan, Yemen, Morocco, etc. The DFW Chinatown is located in Richardson, in part because of the large Asian population. Esther Wu, a former editor of the Dallas Morning News, stated that Chinese immigration began in Richardson in 1975. Since then the Chinese community has expanded to the north. In the mid-1980s the majority of ethnic Chinese K–12 students in the DFW area resided in Richardson.

As of 2012 North Texas has over 60 Chinese cultural organizations and most of them are headquartered in Richardson and Plano. The Dallas Chinese Community Center (DCCC; Chinese: 达拉斯华人活动中心; pinyin: Dálāsī Huárén Huódòngzhōngxīn) is in the D-FW Chinatown. It includes English as a second language (ESL) classes and 20,000 books written in Simplified Chinese; the center imported some books from People's Republic of Mainland China. As of 2011 the Chinese restaurants catering to ethnic Chinese in DFW are mainly in Richardson and Plano. The University of Texas at Dallas in Richardson, as of 2012, has almost 1,000 Chinese students. The university has a program to recruit students of Chinese origin.

Richardson's Asian Indian immigrant community has been primarily driven by the international telecommunications industry that is so prevalent in the community. The Indian Association of North Texas headquarters are in Richardson. Indo-Pak grocery store is located in an Indian-oriented strip shopping center east of Central Expressway. Of the suburbs in the DFW area, Richardson had one of the earliest Indian settlements.

Richardson is home to a large community of Vietnamese Americans and even has a significant amount of Vietnamese-catering retail stores, malls, markets, and plazas, especially near U.S. 75, such as the Hong Kong Market, the Cali Saigon Shopping Mall, etc.

Despite declining economies in other parts of the United States, from 2005 to 2009 Richardson had substantial increases in its economy. The city's total assessed property value went up from $8.3 billion in 2005 to $14 billion in 2017. Sales tax collection went up from $21 million in 2005 to an estimated $32.9 million in 2017.

Since 2008, both Standard & Poor's and Moody's have upgraded Richardson's credit rating to "AAA" from the previous rating of "AA+". At the time, Richardson was one of only four cities in the state of Texas and one of 88 cities in the nation with an "AAA" rating from Standard & Poor's. In 2015, the North Central Texas Council of Governments (NCTCOG) determined Richardson's daytime population to be 156,065 based on American Community Survey information. The economy remains rooted in the telecommunication industry. However, Richardson's property tax base is deep and extends beyond its telecommunication roots to include other sectors including insurance, health care, technology and finance. The tax base is diverse with the 10 leading taxpayers accounting for 16.17% of total assessed value.

On March 1, 2014, the Richardson Fire Department officially received its Class 1 ISO rating. The Insurance Services Office (ISO) is "a leading supplier of statistical, underwriting and actuarial information for the property/casualty insurance industry", and its rating is used to measure the quality and effectiveness of fire protection in a community. At the time, Richardson was one of only 56 municipalities in the country to achieve this highest rating, which tends to reduce property/casualty insurance premiums.

Metro by T-Mobile, Fossil Group, Lennox International, Vent-A-Hood, id Software, VCE, BlueCross BlueShield of Texas, RealPage, Fujitsu Network Communications (U.S. Headquarters) and Samsung Mobile have their corporate headquarters in Richardson.

According to the Richardson Economic Development Partnership's listing on Major Employers (last updated May 2018), the top employers in the city were:

The Charles W. Eisemann Center for Performing Arts is located in Richardson. It serves as the primary venue for the Richardson Symphony Orchestra and the Plano Symphony Orchestra.

Richardson was originally incorporated in 1925, with the first Charter being adopted in 1956 and the latest revision made in November 2015. The community is a home rule city and has operated under the council–manager form of government since 1956. Richardson voters simultaneously elect six Council members and a mayor to represent them every two years. The Council members representing the four districts (1 to 4) must live in each district respectively; however, the mayor and the remaining two districts (5 and 6) can live in any part of the city. All Council members and the mayor are elected at large, with four Council members representing each of the city's four districts. The City Council is elected for two-year terms on a nonpartisan basis.

The Charter requires that the City Council appoint a city manager to act as the chief administrative and executive officer. The city manager is not appointed for a fixed time and may be removed at the will and pleasure of the majority of the City Council. One of the responsibilities of the city manager is to appoint and remove department heads and conduct the general affairs of the municipal government in accordance with the policies of the City Council.

The City provides to its citizens a full range of services including police and fire protection, emergency ambulance service, water and sewer service, solid waste disposal, park and recreational activities, cultural events, and a library. In addition, the City provides planning for future land use, traffic control, building inspection, and community services and operates two 18-hole golf courses. The City also operates the Charles W. Eisemann Center for Performing Arts and Corporate Presentations, which is a multi-venue performing arts and presentation center.

The City of Richardson is a voluntary member of the North Central Texas Council of Governments (NCTCOG) association, the purpose of which is to coordinate individual and collective local governments and facilitate regional solutions, eliminate unnecessary duplication, and enable joint decisions.

The University of Texas at Dallas, also referred to as UT Dallas or UTD, is a public research university in the University of Texas System. Despite its name the UT Dallas main campus, consisting of approximately 445 acres (1.80 km2), is within the Richardson city limits at 800 West Campbell Road. The campus is sited with Campbell Road on the south, Floyd Road on the east, Waterview on the west, and Synergy Park Boulevard on the north. The university owns an additional 265 acres (1.07 km2) in Richardson, adjacent to the campus, between Synergy Park Boulevard and the President George Bush Turnpike. The UTD Student Services building, completed in 2010, is the first academic structure in Texas to be rated a LEED Platinum facility by the United States Green Building Council. During 2016, construction was completed on the Student Services Building addition. New projects include an Alumni Center, a Brain Performance Institute and an engineering building as well as additional housing options. These enhancements are part of a campus renovation that has included hundreds of millions of dollars of investment in new and upgraded buildings since 2009. For the fall 2016 semester, UT Dallas had a total of 26,793 enrolled students.

Dallas College (formerly Dallas County Community College District or DCCCD) serves areas in Dallas County. Richland College of Dallas College is in Dallas on the Richardson border. It is the largest school in the DCCCD, featuring nearly 20,000 students. In 2005, Richland became the first community college to receive the Malcolm Baldrige National Quality Award.

Residents within Collin County are in the zone of Collin College.

The city is served by the Richardson Independent School District (RISD) within the Dallas County portion of the city, and the Plano Independent School District (PISD) within the Collin County portion of the city. Despite that name, however, most of the Richardson Independent School District lies outside of the municipal boundaries of Richardson: 60 percent of RISD is in Dallas, with 35 percent in Richardson and 5 percent in Garland.

The RISD and PISD have many Blue Ribbon Schools. The Blue Ribbon Schools Program is a United States government program created to honor schools. The Blue Ribbon award is considered to be the highest honor that an American school can achieve.

Zoned RISD high schools in Richardson include Richardson High School, Lloyd V. Berkner High School, and J.J. Pearce High School. The Christa McAuliffe Learning Center is also in Richardson. Lake Highlands High School is part of the Richardson Independent School District but is located in Lake Highlands, an area in Dallas just south of Richardson.

Sections of Richardson in the Plano Independent School District are served by several schools. Aldridge, Haggar, Miller, Schell, and Stinson elementary schools are within Richardson and serve Collin County portions of Richardson. A section of Collin County Richardson is zoned to Mendenhall Elementary School in Plano. Otto, Frankford and Wilson middle schools in Plano and Murphy Middle School in Murphy serve separate sections of Collin County Richardson. Vines High School and T.H. Williams High School, 9–10 schools in Plano, serve separate sections of Collin County Richardson, along with McMillen High School in Murphy. Plano Senior High School and Plano East Senior High School also serve separate sections of Collin County Richardson.

The Roman Catholic Diocese of Dallas operates two K–8 schools, St. Joseph School and St. Paul the Apostle School in Richardson. Other private schools include Canyon Creek Christian Academy (K–12), North Dallas Adventist Academy (K–12), IANT Quranic Academy (K–12), The Alexander School (8–12), Dallas North Montessori School (ages 3–9), and Salam Academy (K–12).

Four charter schools operate within the City of Richardson. These include the Evolution Academy Charter School (9–12), Premier High School of Richardson (6–12), Vista Academy of Richardson (K–12), and the Winfree Academy Charter School (Richardson) (9–12).

The Richardson Public Library is located at 900 Civic Center Drive at the southwest corner of U.S. Route 75 (North Central Expressway) and Arapaho Road.

The roots of the Richardson Public Library date back to 1947 when a branch of the Dallas County Library was established in a section of the Cash Dry Goods store on East Main Street in downtown Richardson. The fledgling library collection numbered about 400 volumes and was managed by Jessie Durham the store's proprietor. The City Council established the library as a city department in 1958 and in 1959 the library moved into a newly constructed building at 310 Tyler Street. This new library was just under 6,000 square feet (560 m2) in size and was built at a cost of $100,000.

Richardson was experiencing rapid growth in the 1960s and 1970s, and the library facility soon became inadequate for community needs. The current facility was constructed at a cost of $2 million and opened December 1, 1970. The new 81,650-square-foot (7,586 m2), four-story building opened with the use of two floors and a small portion of a third. The basement was finished in 1980 for the reference collection and services. In 1995 the library underwent another expansion which finished the upper floor and renovated the three previously opened floors. Another renovation occurred in 2006 when the Youth Services department was expanded.

In 2008 the library set a new record for the number of items circulated in a fiscal year when the 1 millionth item was checked out in the fall of 2008. The building has undergone building renovations and technological improvements in recent years that have enhanced the library experience for patrons. Since 2014, the digital library has expanded to include movies, music and magazines as well as books and audiobooks. In 2015, the Richardson Library established a "makerspace" that initially included a 3-D printer, designated computers with creative applications and software, and kits for the early exploration of electronics.

The Texas Municipal League recognized the library with its "Achievement of Excellence in Libraries" award every year from 2004 to 2017.

Richardson and the region benefit from the location of two major highways in the city. The President George Bush Turnpike, running east–west along the northern border of the city, provides a convenient connection to the Dallas Fort Worth International Airport, as well as links to IH 35E, IH 30, IH20, SH 114, and SH 183 west of the city as well as a second link to IH30 east of the city.

Richardson also benefits from the Dallas Area Rapid Transit (DART) Light Rail line which parallels U.S. 75 and has four stations in the city. In October 2016, DART approved the future construction of the Silver Line commuter rail with the adoption of its 20-Year Financial Plan. Service on the Cotton Belt is projected to commence in 2025. The Cotton Belt line will run from DFW Airport to the eastern side of Plano, with Richardson stations located at The University of Texas at Dallas and CityLine. The Cotton Belt rail line will also connect to Trinity Metro's TEXRail line, which connects downtown Fort Worth to the DFW Airport. In order to take full advantage of these transportation assets for development and redevelopment purposes, the City has implemented three Tax Increment Financing (TIF) Districts. TIF District #1 was established in November 2006, encompassing both sides of the U.S. 75 corridor from Campbell Road south to Spring Valley Road, and then extending west from U.S. 75 along Spring Valley Road to Coit Road. TIF District #2, established in November 2011, is bounded by President George Bush Turnpike on the north, Wyndham Lane on the east, Renner Road on the south, and the DART light rail line on the west. TIF District #3, established in November 2011, is bounded by President George Bush Turnpike on the north, the DART light rail line on the east, Renner Road on the South and has its western boundary between Alma Road and U.S. 75. Dallas County participates financially in TIF District #1 and Collin County participates financially in TIF District #2 and TIF District #3.

The southern Central Trail extension opened in June 2014 and the northern extension opened in 2015. The new hike and bike trail segments mean that the central spine to Richardson's trail network will run from city limit to city limit, eventually connecting to trails throughout the region.