Largo, Florida's new 90,000+ sq ft public library, opened July 31st, 2005. (2005-08-05T1925EDT; Olympus E-10; 19mm; 1/320@f/4, ISO 80; photoedited in Picasa) – The original uploader was Baylink at English Wikipedia .. Copyright 2005 Jay R. Ashworth., CC BY-SA 3.0 – Wikimedia Commons Largo is located in Pinellas County. About 82,485 people live here (as of 2020). Between 2010 and 2020, the population grew from 77,648 to 82,485. The region is at 10 meters above sea level. The area covers about 49.8 square kilometers. There are about 2.666 streets in Largo. The postal codes are 33770–33779. The dialing code is 727. Largo is city in Pinellas County, Florida, United States. Among other things, Largo has public Transport, restaurants, cafés, supermarkets, clothing Stores, attractions, schools, banks, hairdressers, dentists, doctors and pharmacies. More information at www.largo.com.