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Places · place_us_il_mason_county · rev 2

Mason County

Mason County is a county of Illinois, United States.

Updated 2026-10-29 · rev 2

Overview

Mason County is a county of Illinois, United States (FIPS il125), with a population of about 13,565^[1].

Geography

Coordinates: 40.2396, -89.9168
Time zone: America/Chicago

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Located in Illinois^[1]
Contains places Bath^[1]
Contains places Easton^[1]
Contains places Forest City^[1]
Contains places Goofy Ridge^[1]
Contains places Havana^[1]
Contains places Kilbourne^[1]
Contains places Mason City^[1]
Contains places Manito^[1]
Contains places San Jose^[1]
Contains places Topeka^[1]

Mentioned in

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Sources

GeoNames US dataset (US.txt / admin2Codes.txt) ↩ ↩