Question: According to the 2010 census, what was the population of the county for which The Naples Daily News is the main daily newspaper?

Context paragraphs:
Palm Beach Daily News: The Palm Beach Daily News is a daily newspaper in Florida, serving the town of Palm Beach in Palm Beach County in South Florida.  It is also known as "The Shiny Sheet" because of its heavy, slick newsprint stock.  It was founded in 1897 as the "Lake Worth Daily News", and it covers the social affairs of the wealthy residents on the island of Palm Beach itself.  Owned by Cox Newspapers, it is a sister publication of "The Palm Beach Post".

The Post and Courier: The Post and Courier is the main daily newspaper in Charleston, South Carolina.  It traces its ancestry to three newspapers, the "Charleston Courier", founded in 1803, the "Charleston Daily News", founded 1865, and "The Evening Post", founded 1894.  Through the "Courier", it is the oldest daily newspaper in the South, and one of the oldest continuously operating newspapers in the United States.  It is the flagship newspaper of the Evening Post Industries.

Jacksonville Daily News: The Daily News is a daily newspaper in Jacksonville, North Carolina.  It has served the city of Jacksonville, Onslow County and its surrounding areas since 1953.  "The Daily News" was owned by Freedom Communications until 2012, when Freedom sold its Florida and North Carolina papers to Halifax Media Group.  In 2015, Halifax was acquired by New Media Investment Group.

Philadelphia Metro: Metro is a free daily newspaper in Philadelphia which began publishing on January 24, 2000.  Its main competition is "The Philadelphia Daily News".  In 2004, "Metro" surpassed "The Daily News" in circulation, 143,798 to 141,868, to move into second behind 372,297 for "The Philadelphia Inquirer"'s.  It was the first "Metro" edition published in North America and the ninth edition since the first in Stockholm in 1995.

The Newport Daily News: The Newport Daily News is an independent six-day daily newspaper serving Newport County, Rhode Island.  It publishes in the mornings on weekdays (Monday through Friday) and in the morning on Saturdays.  The "Daily News" is the state's largest family-owned newspaper.

Redwood City Daily News: The Redwood City Daily News was a free daily newspaper in Redwood City, California published 6 days a week with an average daily circulation of 8,000.  The newspaper was founded August 9, 2000 by Dave Price (journalist) and Jim Pavelich, who also published the "Palo Alto Daily News".  The "Redwood City Daily News" was adjudicated as a newspaper of general circulation by the San Mateo County Superior Court in 2001, enabling it to publish legal notices.  Both the Palo Alto and Redwood City "Daily News" editions were distributed in large red newspaper racks and in stores, coffee shops, restaurants, schools and major workplaces.  The "Redwood City Daily News", along with five other "Daily News" editions, was sold to Knight Ridder on Feb. 15, 2005.  After McClatchy's acquisition of Knight Ridder in early 2006, all six "Daily News" editions, including the "Redwood City Daily News", were bundled with the San Jose Mercury News and sold to MediaNews Group of Denver, Colorado.

Brett Blackledge: Brett J. Blackledge is Investigations Editor at "The Naples Daily News" in Naples, Fla.  Before joining the Naples paper in October 2014, Blackledge was Public Service and Investigations Editor at The "News Journal" in Wilmington, Del.  He worked as a reporter for 26 years before joining the Delaware newspaper, including working as a reporter for The Associated Press in Washington D.C..  While working for "The Birmingham News", he won the 2007 Pulitzer Prize for investigative reporting for a series on alleged nepotism and cronyism in Alabama's two-year college system.

Naples Daily News: The Naples Daily News is the main daily newspaper of Naples, Florida, and Collier County.  Its main competitor in this region is the Fort Myers-based "News-Press", out of neighboring Lee County to the north.  It is owned by the Gannett Company. The Naples Daily News and The News Press papers are both printed at the Naples Daily News after Gannett bought them from JMG since their production equipment was very dated.

Collier County, Florida: Collier County is a county in the U.S. state of Florida.  As of the 2010 census, the population was 321,520.  Its county seat is East Naples, where the county offices were moved from Everglades in 1962.

The Daily News Transcript: The Daily News Transcript (formerly known as the Neponset Valley Daily News) was a five-day (Monday through Friday) afternoon daily newspaper in Norwood, Massachusetts, U.S., covering the Neponset Valley of Norfolk County, Massachusetts.  The "Transcript" was originally published in Dedham, and also covered Walpole and Westwood.

Supporting paragraphs: Naples Daily News Collier County, Florida
Answer: 321,520