Question: What is the population of the largest city in the region WPJF serves?

WPJF (1260 AM) is Christian Talk in Spanish radio station licensed to Greenville, South Carolina, USA, it serves the Upstate South Carolina area.  The outlet is licensed by the Federal Communications Commission (FCC) to broadcast at 1260 kHz with 5,000 watts of power daytime and 15 watts at night.  It first began broadcasting in 1948.  The station is currently owned by Iglesia Nueva Vida of High Point. <SEP> Sorsogon City (Central Bikol: "Ciudad nin Sorsogon" ; Filipino: "Lungsod ng Sorsogon" ), is a second class component city and the capital of the province of Sorsogon, in the Bicol Region of the Philippines.  This city was formed in the year 2000 by the merging of Bacon and Sorsogon towns.  As of ?  , the city's total population is people, spread across 64 barangays.  It is the third most populous city in the Bicol Region behind Legazpi City (196,639) and Naga City (196,003).  Sorsogon City covers a land area of 31292 ha , making it Bicol's largest city in terms of land area.  The city is bounded by the municipality of Castilla in the West, the municipality of Manito in the Northwest, Albay Gulf in the North, the municipality of Prieto Diaz in the East, the municipality of Gubat in the Southeast, the municipality of Casiguran in the Southwest and by Sorsogon Bay in the South.  The city serves a trans-shipment point from the Visayas and Mindanao provinces.  the city are dubbed by any names such as the "Gateway to Southern Philippines","Bicol's Largest City", "Gem City of the South", "Pro-life City", "City of Fun that Never Stops" and "Character City of Bicolandia".  Sorsogon City is one of the region's leading cities in urbanization and the most promising city in terms of development. <SEP> Oakland is the largest city and the county seat of Alameda County, California, United States.  A major West Coast port city, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the San Francisco Bay Area, the eighth largest city in California, and the 45th largest city in the United States, with a population of 419,267 as of 2015 .  It serves as a trade center for the San Francisco Bay Area; its Port of Oakland is the busiest port in the San Francisco Bay, the entirety of Northern California, and the fifth busiest in the United States of America.  The city was incorporated in 1852. <SEP> The Upstate is the region in the westernmost part of South Carolina, United States, also known as the Upcountry, which is the historical term.  Greenville is the largest city in the region with a population of 67,453 and an urban-area population of 400,492, and it is the base of most commercial activity.  Although loosely defined among locals, the general definition includes the ten counties of the commerce-rich I-85 corridor in the northwest corner of South Carolina.  This definition coincides with the Greenville–Spartanburg–Anderson, SC Combined Statistical Area, as defined by the Office of Management and Budget in 2015.  The region's population was 1,409,582 as of 2014.  Situated between Atlanta and Charlotte, the Upstate is the fastest-growing region of South Carolina.  After BMW's initial investment, foreign companies, including others from Germany, have a substantial presence in the Upstate; several large corporations have established regional, national, or continental headquarters in the area.  Spartanburg, followed by Anderson, are next in population.