|— City —|
|• Mayor||Bob Nation|
|• Total||33.52 sq mi (86.82 km2)|
|• Land||31.78 sq mi (82.31 km2)|
|• Water||1.74 sq mi (4.51 km2)|
|Elevation||479 ft (146 m)|
|• Estimate (2011)||47,471|
|• Density||1,494.1/sq mi (576.9/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||0755881|
Chesterfield is a second-ring western suburb of St. Louis and is the largest city in west St. Louis County, Missouri, United States. As of the 2010 census the population is 47,484 which is the 14th largest city in Missouri. Chesterfield celebrated the 20th anniversary of its founding in 2008. Chesterfield as of 2013 is experiencing a mass-construction boom. Two outlet malls, one having a Saks Off 5th Outlet Store, are under construction in the Valley. A Hyatt Hotel is under construction across from the Chesterfield Mall next door to Merril Lynch and the Drury Plaza Hotel.
Chesterfield is located about 25 miles (40 km) west of St. Louis, Missouri. According to the United States Census Bureau, the city has a total area of 33.52 square miles (86.82 km2), of which, 31.78 square miles (82.31 km2) is land and 1.74 square miles (4.51 km2) is water.
Portions of Chesterfield are located in the floodplain of the Missouri River, now known as Chesterfield Valley, formerly Gumbo Flats. This area was submerged during the Great Flood of 1993; higher levees built since then have led to extensive commercial development in the valley. Chesterfield Valley is the location of Spirit of St. Louis Airport, used for corporate aviation, as well as the longest outdoor strip mall in America. The remainder of Chesterfield is located on the bluffs above the floodplain, and includes residential and retail development.Chesterfield is also home to several mid to high rise buildings. The tallest of them being the Drury Plaza Hotel, which is 12 stories and 125 feet tall.
According to the 2007-2011 American Community Survey estimate, the median income for a household in the city was $95,006, and the median income for a family was $118,568. Males had a median income of $94,322 versus $54,934 for females. The per capita income for the city was $51,725. About 1.7% of families and 4.0% of the population were below the poverty line, including 1.7% of those under age 18 and 3.3% of those age 65 or over.
2010 census 
As of the census of 2010, there were 47,484 people, 19,224 households, and 13,461 families residing in the city. The population density was 1,494.1 inhabitants per square mile (576.9 /km2). There were 20,393 housing units at an average density of 641.7 per square mile (247.8 /km2). The racial makeup of the city was 86.5% White, 2.6% African American, 0.2% Native American, 8.6% Asian, 0.7% from other races, and 1.4% from two or more races. Hispanic or Latino of any race were 2.8% of the population.
There were 19,224 households out of which 29.3% had children under the age of 18 living with them, 62.2% were married couples living together, 5.9% had a female householder with no husband present, 2.0% had a male householder with no wife present, and 30.0% were non-families. 26.1% of all households were made up of individuals and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.94.
The median age in the city was 46.6 years. 22.3% of residents were under the age of 18; 5.7% were between the ages of 18 and 24; 19.5% were from 25 to 44; 32.5% were from 45 to 64; and 20.1% were 65 years of age or older. The gender makeup of the city was 47.8% male and 52.2% female.
2000 census 
As of the census of 2000, there were 46,802 people, 18,060 households, and 13,111 families residing in the city. The population density was 1,485.4 people per square mile (573.5/km²). There were 18,738 housing units at an average density of 594.7 per square mile (229.6/km²). The racial makeup of the city was 92.30% White, 0.86% African American, 0.12% Native American, 5.56% Asian, 0.02% Pacific Islander, 0.39% from other races, and 0.74% from two or more races. Hispanic or Latino of any race were 1.55% of the population.
There were 18,060 households out of which 33.2% had children under the age of 18 living with them, 65.5% were married couples living together, 5.4% had a female householder with no husband present, and 27.4% were non-families. 23.6% of all households were made up of individuals and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.03.
In the city the population was spread out with 24.6% under the age of 18, 5.9% from 18 to 24, 25.0% from 25 to 44, 29.7% from 45 to 64, and 14.7% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 91.6 males. For every 100 females age 18 and over, there were 88.2 males.
Ancient History 
Present-day Chesterfield is known to have been a site of Native American in-habitation for thousands of years. A site in western Chesterfield containing artwork and carvings has been dated as 4,000 years old. A Mississippian site, dated to around the year 1000, containing the remains of what have been identified as a market and ceremonial center, is also located in modern Chesterfield.
Historical communities 
The present-day city of Chesterfield is made up of several smaller historical communities, including:
- Bellefontaine (French for, "beautiful spring"), or as the locals called it, "Hilltown", dates to about 1837 with the arrival of August Hill. The first post office was established as Bellemonte ("beautiful mountain") in 1851. Eighteen years later, in 1869, the town and post office name were both changed to Bellefontaine. Rinkel's Market was a familiar landmark for years, at the intersection of present day Olive Blvd. and Chesterfield Parkway (where Charlie Gitto's from The Hill is now).
- The town of Lake started out as "Hog Hollow," in about 1850. The post office was established as Hog Hollow, in 1871; but a year later the town's name was changed, to what some thought was the more suitable name of Lake. Zierenberg's General Merchandise and Saloon (built around 1880), was a well known landmark, at the 18- mile marker on Olive Street Road. The original structure was destroyed by fire in 1918. It was replaced by the still existing structure, on the same site (Olive Blvd. and Hog Hollow Road).
- Gumbo is located in the valley at the present intersection of Chesterfield Airport Road and Long Road. A notable landmark (until it was razed in 1998), was the old Twenty Five Mile House - so named because of its distance from downtown St.Louis. Gumbo's name derived from its soil, which though very rich and silty, when wet became gumbo mud. A substance very similar to gravel was made from Gumbo mud and used for streets and sidewalks in Forest Park during the 1904 World's Fair. Gumbo's post office operated from 1882 to 1907.
- Monarch (earlier called Atherton, then Eatherton), was one of the settlements that sprang up along the Chicago, Rock Island and Pacific rail line, when it came through the valley in the late 1870s. William Sutton's General Store stood on the northwest corner of Eatherton and Centaur Roads. Their post office operated from 1895 to 1907, when the mail was transferred to Chesterfield. A well known residence in Monarch was named "The Shadows"; it still survives, with a commanding view from its bluff site.
- Bonhomme had a colorful life. The name is French for "good man." This small community, at the extreme western end of Olive Street Road, was close to the Howell's Ferry landing. It had a blacksmith shop, grist mill, store, post office and Fenn's saw mill; but it was all washed away in the late 19th century by the Missouri River. Bonhomme was a popular name in St. Louis County; with Bonhomme streets, roads, creeks, churches and townships still so-named. However, this Bonhomme is the only one that ever had its own post office.
1967 Tornado 
On January 24, 1967, a violent F4 tornado ripped a 21-mile (34 km) path of destruction across St. Louis County. It was the fourth-worst tornado to hit the St. Louis metro area and the most recent F4 tornado to hit the city. The tornado developed near the Chesterfield Manor nursing home and then moved through River Bend Estates and across northeast St. Louis County.
Incorporation as Chesterfield 
For many years, Chesterfield was an all inclusive place name for a vast unincorporated area of St. Louis County containing the unincorporated historical communities listed above and areas now incorporated as other cities such as Ballwin. Police and fire protection were fragmented and sporadic, the former provided by St. Louis County. As the population grew, Chesterfield Mall and other developments sprang up. But many residents were concerned by the lack of quality services and that the municipal sales tax failed to benefit the community.
An organization was formed calling itself the "Chesterfield Incorporation Study Committee." Headed by president John A. Nuetzel, himself former president of the River Bend Association, (a zoning watchdog) the members passed the hat at neighborhood meetings, engaged legal help, drew up metes and bounds and forced several unsuccessful votes for incorporation. After a number of years, in 1988, The City of Chesterfield was finally established by its residents and thrives today as a major residential, business, retail and transportation center on the western edge of St. Louis County.
Highways and major roads 
Interstate 64 runs East-West through Chesterfield, there are seven exits serving the city (exit numbers 14-21). Missouri Route 340 (Olive Blvd.) runs on an East-West though much of Chesterfield before turning Southwest near the I-64 Interchange, Rt 340 is known as Clarkson Rd South of junction. Missouri Route 141 (Woodsmill Rd) runs along the Eastern border between Chesterfield and Town and Country, Missouri. Rt. 141's northern terminus is located in Chesterfield at Olive Blvd. The Missouri Department of Transportation (MoDOT) and St. Louis County Department of Highways and Traffic (DHT) will begin construction of Route 141 in Chesterfield in 2009. MoDOT will expand Route 141 between just south of Ladue Road (Route AB) to Olive Road (Route 340). DHT will extend Route 141 from Olive Road to the Page Avenue Extension (Route 364) at the Maryland Heights Expressway
Public transportation 
Central Midland Railway (CMR), a division of Progressive Rail Inc. of Minnesota, provides regular freight rail service to industrial customers located in the Chesterfield Valley. CMR operates the far eastern segment of the former Chicago, Rock Island and Pacific Railway's St. Louis to Kansas City main line that was constructed in 1870. The active portion of the former CRI&P line runs from the north side of St. Louis, where it connects with the Terminal Railroad Association of St. Louis and Union Pacific Railroad, and now terminates in Union. A primary rail customer in Chesterfield is a RockTenn (formerly Smurfit Stone) corrugated packaging plant which is located on a spur track that extends from the main track northward along the east end of the runway of the Spirit of St. Louis Airport. RockTenn typically receives inbound shipments of corrugated paper.
Primary and secondary schools 
Chesterfield has a number of elementrary and middle schools and two high schools. The Rockwood School District serves the Western portions of the city, while the Parkway School District serves the Eastern portions of Chesterfield. Chesterfield also has one private high school, Barat Academy, which has taken over the former campus of Gateway Academy (Chesterfield, MO), a former private elementary school. There are four private elementary schools: Chesterfield Day School, Chesterfield Montessori School, Ascension School, and Incarnate Word School
Colleges and universities and trade schools 
Logan College of Chiropractic offers undergraduate and graduate level courses on Chiropractic, Pre-Chiropractic, Sport Science and Rehabilitation medicine.
Public libraries 
Top employers 
According to the City's 2009 Comprehensive Annual Financial Report, the top employers in the city are:
|#||Employer||# of Employees|
|1||St. Luke's Hospital||3,645|
|3||Parkway School District||1,027|
|4||McBride & Son Homes||700|
|5||Reinsurance Group of America||600|
|7||Mercy Health Plans||370|
|7||Rockwood School District||363|
|9||IKON Office Solutions||293|
|10||RGA Technology Partners||289|
Faust Park contains an updated playground, historical village, walking trail, carousel, and the "The Butterfly House", which opened in 1998. A nearby giant cement butterfly sculpture by Bob Cassilly was dedicated in 1999.
Notable people 
- Jeremy Maclin, former Missouri Tigers wide receiver, current wide receiver for the Philadelphia Eagles.
- Davis Payne, former head coach of the St. Louis Blues
- Max Scherzer, MLB pitcher for the Detroit Tigers.
- Yan Stastny, Professional Hockey Player; St. Louis Blues, Parkway Central High School alumnus.
- Jim Talent, Former U.S. Senator (R).
- Adam Wainwright, MLB pitcher for the St. Louis Cardinals.
- Kurt Warner, former NFL Quarterback for St. Louis Rams, 1999, 2001 NFL MVP, 1999 Super Bowl MVP.
- David Freese, third baseman for St. Louis Cardinals, 2011 NLCS MVP, 2011 World Series MVP
- Ryan Howard: Philadelphia Phillies 1st baseman, 2005 NL Rookie of the Year, 2006 NL MVP
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-07-08.
- "American FactFinder". United States Census Bureau. Retrieved 2012-07-08.
- "Population Estimates". United States Census Bureau. Retrieved 2013-01-04.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- "Flood Plain Developers Dare Nature - Science News". redOrbit. 2005-10-12. Retrieved 2013-04-13.
- Mary Shapiro. "New book uncovers Chesterfield’s ancient past : Sj". Stltoday.com. Retrieved 2013-04-13.
- "January 24th 1967 F4 Tornado St. Louis County". Crh.noaa.gov. Retrieved 2013-04-13.
- "Route 141 Improvement Project (Ladue to Olive)". MoDOT. Retrieved 2008-06-10.
- "Page to Olive Connector Study". St. Louis County Department of Highways and Traffic. Retrieved 2008-10-15.
- FAA Airport Master Record for SUS ( PDF), effective 2007-07-05
- "Central Midland Railway CMR". Retrieved February 5, 2012.
- "Where We Go". Progressive Rail Inc. Retrieved February 5, 2012.
- Brown, Lisa (January 25, 2011). St. Louis Post Dispatch http://www.stltoday.com/business/local/article_a20b0928-9638-5884-8650-591afc339c8c.html. Retrieved February 5, 2012. Missing or empty
- "Samuel C. Sachs Branch." St. Louis County Library. Retrieved on August 18, 2009.
- "Chesterfield city, Missouri." U.S. Census Bureau. Retrieved on August 18, 2009.
- "Contact Us." Broadstripe. Retrieved on March 5, 2010.
- "City of Downers Grove Comprehensive Annual Financial Report, for the Year ended June 30, 2009" (PDF). Retrieved 2013-04-13.
- "Butterfly House". Missouribotanicalgarden.org. Retrieved 2013-04-13.