Between 1990 and 2000, Kinloch lost more than 80 percent of its population, and the city became an increasingly violent and dangerous place to live.

As soon as the neighbors discovered the new owners were black they sold their properties, and new sales to permanent white residents of south Kinloch Park ceased.

[citation needed] In a few years, more than 30 black families had bought into a six-block area that became called South Kinloch Park.

[8] Since it was not legal to sell directly to blacks,[citation needed] the Olive Street Terrace Realty Corporation sold the parcels to whites for an average price of $150.

[7] In an advertisement to the Argus, Olive Street Terrace Realty said, "The good colored people of South Kinloch Park have built themselves a little city of which they have a right to be proud.

The Aero Club of St. Louis hosted the first international air meet in October 1910, where Theodore Roosevelt became the first U.S. president to fly in an airplane.

[10][11] The Kinloch Airfield saw the first control tower, the first meal served on a flight, the first airmail shipped, the first parachute jump, the first aerial photo and the first animal airlifted.

[12] Kinloch was home to the 198th chapter of the Universal Negro Improvement Association UNIA, which fostered black-owned businesses in the area.

Their two-room school was given to black students, who were using the 1885 Vernon schoolhouse built for the children of the servants to the whites in Kinloch.

[citation needed] Another Vernon School opened in 1927 to educate the black students of Kinloch and west Ferguson.

This led to the foundation of a new municipality called Berkeley, which included all of North Kinloch Park plus land to the northwest and which formed a new school district.

This clean, economic and efficient transportation gave Kinloch residents the ability to travel with ease to jobs both in the City of St. Louis and the northwestern suburbs.

At the Wellston Loop, the line connected with numerous other streetcar and bus lines, giving Kinloch residents a reliable way to get to downtown St. Louis and the suburbs of University City, Clayton, Brentwood, Kirkwood, and Webster Groves–as well as communities along St. Charles Rock Road west to St. Charles.

In summer streetcar riders always commented on the tantalizing smoky breeze of barbecuing at the Kinloch stop, where the trolleys to Ferguson paused on a graceful, wide curve.

The police department faced numerous investigations, and over a 20-year period a number of officers were arrested on corruption charges.

In September 2002, St. Louis County police chief Ron Battelle directed his department to take control of law enforcement in Kinloch.

The redevelopment will offer office, retail, and industrial space and is expected to create about 12,000 jobs, along with tax revenue to be split among the municipalities.

[16] On April 23, 2015, newly elected mayor Betty McCray was refused entrance to City Hall on the first day of her term.

[20] In 2016, local media reported that Kinloch used donated police cars that it did not register or insure, and operated without paying into the state's workers' compensation fund, making officers injured on the job were responsible for their own medical bills.

In 2015, press reports indicated the average lifespan in mostly-black Kinloch is thirty years less than in mostly-white Wildwood.