Question: WGCA-FM serves an area of Missouri with what population?

Context paragraphs:
Columbia, Missouri: Columbia is a city in the U.S. state of Missouri and the county seat of Boone County.  Founded in 1821, it is home to the University of Missouri and is the principal city of the Columbia Metropolitan Area.  It is Missouri's fourth most-populous city, with an estimated population of 120,612 in 2016.  As a midwestern college town, the city has a reputation for progressive politics, public art, and powerful journalism.  The tripartite establishment of Stephens College (1833), the University of Missouri (1839), and Columbia College (1851) has ever since made the city a center of education, culture, and athletic competition; these three schools surround the city's central business district to the east, south, and north.  At the center of Downtown is 8th Street, also known as the Avenue of the Columns, which connects Francis Quadrangle and Jesse Hall to the Boone County Courthouse and the City Hall.  Originally an agricultural town, the cultivation of the mind is Columbia's chief economic concern today.  Never a major center of manufacturing, the city also depends on healthcare, insurance, and technology businesses.  Several companies, such as Shelter Insurance, Carfax, and Slackers CDs and Games, were founded in the city.  Cultural institutions include the State Historical Society of Missouri, the Museum of Art and Archaeology, and the annual True/False Film Festival.  The Missouri Tigers, the state's only major college athletic program, play football at Faurot Field and basketball at Mizzou Arena as members of the Southeastern Conference (SEC).

Hannibal, Missouri: Hannibal is a city in Marion and Ralls counties in the U.S. state of Missouri.  Interstate 72 and U.S. Routes 24, 36, and 61 intersect in the city, which is located along the Mississippi River approximately 100 mi northwest of St. Louis.  According to the 2010 U.S. Census, the population was 17,606, making it the largest city in Marion County.

Kansas City metropolitan area: The Kansas City metropolitan area is a 15-county metropolitan area anchored by Kansas City, Missouri, that straddles the border between the U.S. states of Missouri and Kansas.  With a population of about 2,340,000, it ranks as the second largest metropolitan area with its core in Missouri (after Greater St. Louis).  Alongside Kansas City, the area includes a number of other cities and suburbs, the largest being Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; and Independence, Missouri; each over 100,000 in population.  The Mid-America Regional Council (MARC) serves as the Council of Governments and the Metropolitan Planning Organization for the area.

WGCA-FM: WGCA-FM is a local Christian Radio Station in Quincy, Illinois broadcasting on 88.5 MHz FM.  The station airs a Contemporary Christian music format, and serves the areas of Quincy, Illinois, Hannibal, Missouri, and Keokuk, Iowa.

Downtown Columbia, Missouri: Downtown Columbia is the central business, government, and social core of Columbia, Missouri and the Columbia Metropolitan Area.  Three colleges — the University of Missouri, Stephens College, and Columbia College — all border the area.  Downtown Columbia is an area of approximately one square mile surrounded by the University of Missouri on the south, Stephens College to the east and Columbia College on the north.  The area serves as Columbia's financial and business district and is the topic of a large initiative to draw tourism, which includes plans to capitalize on the area's historic architecture, and Bohemian characteristics.  The downtown skyline is relatively low and is dominated by the 10-story Tiger Hotel, and the 15-story Paquin Tower.

Mid-Missouri: Mid-Missouri is a loosely-defined region comprising the central area of the U.S. state of Missouri.  The region's largest city is Columbia (population 100,000+).  The Missouri state capital, Jefferson City, and the University of Missouri are also located here.  The region also includes portions of the Lake of the Ozarks, the Ozark Mountains, and the Missouri Rhineland.  Mid-Missouri is centered on two contiguous metropolitan areas: the Columbia Metropolitan Area and the Jefferson City Metropolitan Area, which together have a population of over 300,000.

KLIK: KLIK (1240 AM), branding as Newstalk 1240, is a radio station broadcasting a News Talk Information format.  Licensed to Jefferson City, Missouri, United States, the station serves the Columbia, Missouri area.  The station is currently owned by Cumulus Media and features programing from ABC Radio and Westwood One.  KLIK also operates a local news operation with sister station KFRU (1400 AM in Columbia, Missouri).  From 1954 until September 8, 1999, KLIK was located at 950 AM, transmitting with a daytime power of 5000 watts and a nighttime power of 500 watts (directional) from a four tower array about 3.2 miles south of Jefferson City.  Early owners of KLIK broadcast a varied format of news and talk programs including music programs of middle of the road, top 40, adult contemporary and country music as 95 KLIK.  For many years, KLIK and KJFF as the two largest regional radio stations (the most powerful AM and FM station in the region) dominated radio listenership in cumulative market share in the Columbia-Jeff City Market of Central Missouri.  In the 1970s and early 1980s KLIK was known as the Live 95 as its broadcasts were all programmed by live deejays, talk hosts and newscasters rather than by a satellite or automation system.  KLIK once operated with an FM sister station in the 1970s and 1980s known was KJFF 106.9 FM a 100,000 watt semi-automated easy listening music station with a large regional coverage signal.  In the early 1980s KLIK and KJFF-FM together were sold by the local Jefferson City operators to a regional group broadcaster, and newspaper publisher, Brill Media.  In about 1982, KJFF-FM 106.9 FM became an adult contemporary music station, initially with a satellite delivered music format, and easy listening music was phased out along with the KJFF call letters which were replaced by the new FM call signs of KTXY.  KLIK 950 AM transitioned over from AC/Contemporary music at about the same time to a 24-hour-a-day live country/western format known as 95 Country.  KLIK carried a variety of programming and a mostly country music format until the late 1990s.

Harry S. Truman Memorial Veterans' Hospital: The Harry S. Truman Memorial Veterans' Hospital is a Veterans Administration (VA) hospital located in Columbia, Missouri.  Located by the University of Missouri campus, the Truman Memorial VA Hospital has a coverage area of 43 counties in Missouri and Illinois and serves more than 38,000 veterans inpatient and 314,000 veterans outpatient.  It is affiliated with the University of Missouri School of Medicine.  The medical center provides primary care, surgical, mental health, medical, geriatric, transitional, rehabilitative, and hospice services.  The Truman VA has achieved some of the best scores in the state of Missouri for JCAHO Quality Reporting.

Canton Area School District: The Canton Area School District is a diminutive, rural, Pennsylvania public school district that encompasses approximately 204 sqmi .  Canton Area School District is split over 3 counties.  In Bradford County, it serves Canton Township including Canton Borough; while excluding the borough of Alba, and Leroy Township.  In Lycoming County, the district serves McIntyre Township including the villages of Marsh Hill and Ralston; and McNett Township including the villages of Chemung, Ellenton, Leolyn, Penbryn, and Roaring Branch.  In Tioga County, the district serves Union Township.  According to 2000 local census data, the district serves a resident population of 6,213.  By 2010, the district's population increased to 6,534 people.  The educational attainment levels for the Canton Area School District population (25 years old and over) were 86.6% high school graduates and 10.9% college graduates.  The district is one of the 500 public school districts of Pennsylvania.

Area code 573: Area code 573 serves most of the eastern half of Missouri outside the immediate St. Louis area.  It extends across half of the width of the state, with the northeastern tip near the northeastern corner of the state, the Lake of the Ozarks at the western tip and Doniphan as the southwestern tip.  It also serves all of southeastern Missouri (including the Missouri Bootheel area) and areas adjacent to the Mississippi River.  It was created on January 7, 1996 as a split from area code 314.

Supporting paragraphs: WGCA-FM Hannibal, Missouri
Answer: 17,606