Mason City Illinois Campgrounds
Mason City Illinois has a zip code of 62664. The current date and time in Mason City is August 17, 2026, 12:02 am and it has a population of 3,338 people. Mason City Illinois lies at an elevation of 479 feet.
Mason City Illinois has a zip code of 62664. The current date and time in Mason City is August 17, 2026, 12:02 am and it has a population of 3,338 people. Mason City Illinois lies at an elevation of 479 feet.
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