Mt. Vernon is a populated place in United States. GeoNames lists its administrative area as Illinois.

Its mapped location is latitude 38.31727° and longitude -88.90312° (WGS84). The recorded IANA time zone is America/Chicago. The country record uses the currency code USD. The source record reports a population of 15,087; this is a recorded figure, not a live population count.

The GeoNames record was last modified on 2026-08-30. Use this page to explore the street map, local time, weather and currency reference tools. Community guides and useful local links can be added separately.