Katy is a city in the U.S. state of Texas, approximately centered at the tripoint of Harris, Fort Bend, and Waller counties. The population was 21,894 at the 2020 census. It is the center of the urban Greater Katy area, itself forming the western part of the Greater Houston metropolitan area.
First formally settled in the mid-1890s, Katy was a railroad town along the Missouri–Kansas–Texas (MKT) Railroad which ran parallel to U.S. Route 90 (today Interstate 10) into downtown Houston. Katy obtained its name when the MKT Railroad dropped its Missouri waypoint and the junction became known as the "KT stop". The fertile floodplain of Buffalo Bayou, which has its source near Katy, and its tributaries made the city and other communities in the surrounding prairie an attractive location for rice farming. Beginning in the 1960s, the rapid growth of Houston moved westward along the new Interstate 10 corridor, bringing Katy into its environs.
Today, Katy lies at the center of a broader area known as Greater Katy, which has become heavily urbanized. Homes and businesses may have Katy postal addresses without being in the city limits. While largely subsumed into Greater Houston, the town of Katy is still notable for Katy Mills Mall, Katy High School and its football dominance, and the historic Katy town square along the former right-of-way of the MKT railroad.
History
thumb|First bridge over Cane Island Creek, circa 1895|left
The City of Katy sits on Karankawa tribal lands. European colonists' first record of contact with a tribe is in 1528. Over the next 250 years the area was trafficked by French and Spanish European colonists seeking land and trade opportunities. By 1779, the Karakawa were at war with Spanish settlers. In 1790 the war ended and shortly after settlement begins.
In the early 1800s Katy came be to be known as "Cane Island", Freed slaves and their families including Thomas (Mary) Robinson and Milto McGinnis, along with Mr. Crawford, Peter Black, and John Sills were the only recorded residents of Cane Island in 1875.
In 1895, James Oliver Thomas laid out a town, and in January 1896 the town of Katy was named through Thomas's post office application. The name "Katy" was derived from the MKT Railroad Company, which was commonly referred to as "the K-T" (also its stock exchange symbol). This common designation soon evolved into "the Katy", and since the railroad company and its trains held a key depot station located today's city, the general location came to be known as Katy.
thumb|Katy Residents gather for a photo at Cane Island Creek Bridge in 1911.|left
The anticipations of prosperity would bring growth to the new town which was developed around the original train stop and railroad tracks. By the early 1900s many families had come by train and wagon to establish Katy. Cotton and peanuts and corn were the first successful crops, but rice soon became the primary commodity crop. Katy later became known for rice farming; the first concrete rice driers in the state of Texas were built here in 1944 and still stand as landmarks. The farming community well supported local businesses as several hotels, stores, livery stables and saloons were prospering.
On September 8, 1900, the town's early efforts were swept clean by the Great Galveston Hurricane of 1900, the deadliest hurricane in U.S. history. All but three of the original Katy homes were lost in the storm—The Wright House, The Featherson House, and The Morrison-Freeman House. Despite this, three major homes were built in the immediate aftermath of the hurricane and another six more over the following decade. Cane Island was rebuilt quickly and continued to grow.
The City was once known as the "City of Churches" due to the role of religion in daily life. Not only were churches highly concentrated in the city, but according to area historian Carol Adams, the residents had a fervent religious belief. Circa the 1900s the city erected a "City of Churches" sign.
Humble Oil opened the Katy Gas Field in 1943, which went on to become one of the principal suppliers of allied forces and eventually became one of the most productive gas fields in the State of Texas. Today, what was Humble Oil is now Exxon which continues to operate and oversee the expansive underground pipeline network in the region.
In 1945 the City of Katy was incorporated. The City of Katy's government has also placed a large focus on the downtown redevelopment plan which included the new city hall building and an upcoming downtown green space. Further projects included Typhoon Texas Water Park, Katy Independent School District's Legacy Football Stadium, Katy Independent School District's Rhodes Stadium, Momentum Indoor Climbing Center, REI Climb Store and the YMCA at Katy Main Street.
The City of Houston's extraterritorial jurisdiction stretches well west of Katy. This means that a few unincorporated lands in the Katy area could be annexed by the City of Houston at some time in the future, though it is unlikely since Houston is unable to provide basic services to these isolated areas. The city of Katy's extraterritorial jurisdiction, meanwhile, is limited to parcels of land west and north of the city itself.
Climate
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen climate classification system, Katy has a humid subtropical climate, abbreviated "Cfa" on climate maps. The area is located in the Western Gulf Coastal Grasslands, or the coastal prairie.
Demographics
As of the 2025 ACS, the City of Katy has an estimated population of 25,184, with a median age of 38 years old. Just over half the resident population (52%) has a bachelor's degree, and the majority of workers between 25-44 years of age work from home despite the car-dependent infrastructure.