The most populous cities in area code 309 are: Peoria, Bloomington, Moline, Rock Island, and Galesburg.
Other cities in the 309 area code include: East Peoria, East Moline, Macomb, Morton, Washington, Canton, Kewanee, Monmouth, Geneseo, Chillicothe, Peoria Heights, Eureka, Colona, Coal Valley, Metamora, Le Roy, Aledo, Havana, Abingdon, Heyworth, Bushnell, Knoxville, Galva, Lewistown, Henry, Elmwood, Mackinaw, Cambridge, Minonk, Roanoke, Lexington, Farmer City, Orion, Princeville, Hampton, Tremont, Lacon, Hudson, Port Byron, Delavan, Erie, Manito, Wyoming, Colchester, Oquawka, Gridley, Cuba, Toulon, Minier, Dunlap, Toluca, Danvers, Glasford, Hanna City, Taylor Ridge, Roseville, Colfax, Astoria, Atkinson, Washburn, Brimfield, Albany, Downs, New Windsor, Stronghurst, Annawan, Woodhull, Hopedale, Viola, Kirkwood, Avon, Saybrook, Vermont, Mc Lean, Wataga, Deer Creek, Sherrard, Yates City, Blandinsville, Stanford, Oneida, Green Valley, Bradford, Cordova, Ipava, Buda, Alpha, Carlock, Lynn Center, Keithsburg, Hillsdale, Neponset, New Boston, Congerville, Altona, Williamsfield, Fairview, Varna, Benson, Reynolds, Towanda, Industry, Table Grove, Prairie City, Sparland, Bellflower, Good Hope, Easton, Joy, Secor, Maquon, Biggsville, Kilbourne, Little York, Victoria, Ellsworth, Arrowsmith, Bath, North Henderson, Mineral, Forest City, La Fayette, Seaton, Rio, Adair, Smithfield, Cooksville, Gilson, Littleton, Media, Ellisville, Marietta, Topeka, Alexis, Carman, Cropsey, Edelstein, El Paso, Farmington, Goodfield, Groveland, Illinois City, London Mills, Lowpoint, Osco, Pekin, Plymouth, San Jose, Smithshire, Speer, and Trivoli.
Peoria is a city in and the county seat of Peoria County, Illinois, United States, and the largest city on the Illinois River. Established in 1691 by the French explorer Henri de Tonti, Peoria is the oldest European settlement in Illinois, and is named after the Peoria tribe. As of the 2010 census, the city was the seventh-most populated in Illinois (and the third largest outside of the Chicago metropolitan area), with a population of 115,007. The Peoria Metropolitan Statistical Area had a population of 373,590 in 2011. Peoria had a population of 118,943 in 2010, when far northern Peoria was also included. Peoria is, until later in 2017 when a move of some executive and support staff (in the end, about 300) to Chicago will begin, the global and national headquarters for Caterpillar Inc., one of the 30 companies composing the Dow Jones Industrial Average, and listed on the Fortune 100. Around 12,000 jobs will still remain in the Peoria area.
Bloomington is a city in Illinois, United States and the county seat of McLean County. It is adjacent to Normal, and is the more populous of the two principal municipalities of the Bloomington-Normal metropolitan area.The 2010 census showed the city had a population of 76,610, making it the 12th most populated city in Illinois, and the fifth-most populous city in the state outside of the Chicago Metropolitan Area. Combined with Normal, the twin cities have a population of roughly 130,000.
Moline is a city located in Rock Island County, Illinois, United States. With a population of 43,977 in 2010, it is the largest city in Rock Island County. Moline is one of the Quad Cities, along with neighboring East Moline and Rock Island in Illinois and the cities of Davenport and Bettendorf in Iowa. The Quad Cities has a population estimate of 381,342. The city is the ninth-most populated city in Illinois outside of the Chicago Metropolitan Area. The corporate headquarters of Deere & Company is located in Moline, as was Montgomery Elevator, which was founded and headquartered in Moline until 1997, when it was acquired by Kone Elevator, which has its U.S. Division headquartered in Moline. Quad City International Airport, Niabi Zoo, Black Hawk College, and the Quad Cities campus of Western Illinois University-Quad Cities. Moline is a retail hub for the Illinois Quad Cities, as South Park Mall and numerous big-box shopping plazas are located in the city.In the mid-1990s, the city undertook major efforts to revitalize its central business district, which had declined after suburban growth and retail changes after the 1950s and 1960s. Today, Moline's downtown again serves as one of the civic and recreational hubs of the Quad Cities; many events take place at the 12,000-seat iWireless Center (formerly known as The MARK of the Quad Cities) and at John Deere Commons. Downtown Moline features hotels such as Radisson and Stoney Creek Inn, and commercial areas such as Bass Street Landing and the historic 5th Avenue.
The 309 area code lies within the Central Daylight Time Zone (or CDT). The current time in Central Daylight Time is 1:17 PM on Apr 20, 2021.