The Kansas City metropolitan area is a bi-state region spanning 8,472 square miles across Missouri and Kansas. As the second largest metropolitan area centered in Missouri and the largest in Kansas, it boasts a population exceeding 2.2 million. Key urban centers within the area include Kansas City, Missouri, Overland Park, Kansas, Kansas City, Kansas, Olathe, Kansas, Independence, Missouri, and Lee's Summit, Missouri.
In 1966, voters approved a bond issue to fund $150 million in upgrades for Mid-Continent International Airport, which would later become Kansas City International Airport.
Originally envisioned as TWA's "Airport of the Future," Kansas City International Airport (MCI) commenced operations in 1972, designed as a global hub for supersonic transport and the iconic Boeing 747.
Until 1972, when Kansas City International Airport became the primary airport, Charles B. Wheeler Downtown Airport served as the area's main airport.
Since 2000, the Kansas City metro area has demonstrated its status as a swing metro area by consistently alternating its support between the Republican and Democratic parties in presidential elections.
July 2005 marked the introduction of the Metro Area Express (MAX), Kansas City, Missouri's inaugural bus rapid transit line. The MAX connects key locations such as River Market, Downtown, Union Station, Crown Center, and Country Club Plaza.
In 2009, the Kansas City Kansan, serving Wyandotte County, transitioned from its print format to an online-only publication.
On December 12, 2012, a ballot initiative to secure funding for the construction of the $102 million KC Streetcar line received approval from voters.
In August 2014, Cerner Corporation, a global healthcare IT company, made a significant move by acquiring its competitor, Siemens Healthcare.
In 2015, the Kansas City metropolitan area played a substantial role in the economic output of both Kansas and Missouri, contributing to 40.9% and 22.7% of their respective total GDPs.
The KC Streetcar, a 2.2-mile modern streetcar line in Downtown Kansas City, officially opened to the public in May 2016.
Between 2018 and 2019, Kansas added 13,000 jobs while Missouri added 6,500 jobs, highlighting a significantly higher job growth rate in Kansas.
In 2018, the population of the Kansas City metropolitan area (MO-KS) was recorded as 2,106,632.
In 2019, the employment distribution in the Kansas City metro area saw Missouri accounting for 56% and Kansas accounting for 44% of jobs. Kansas experienced a significant job growth of 2.7% compared to Missouri's 1.1% growth during this period.
In 2022, the population of the Kansas City CSA (Combined Statistical Area) reached 2,209,152.
On February 28, 2023, a new single-terminal building was inaugurated at Kansas City International Airport (MCI) to enhance its design, operational efficiency, and overall passenger experience.