Decatur is a standalone smaller Illinois market in the central part of the state — its own local economy, not a satellite of a larger city. Major metro distances from Decatur: St. Louis 107 mi (southwest), Indianapolis 149 mi (east), Chicago 157 mi (northeast). The Illinois state capital, Springfield, is 37 miles to the west of Decatur. Decatur is a smaller community than nearby Springfield, which means lower competitive density on local search queries.
Decatur has a population of 74,710, ranking 16th of 52 covered Illinois cities and accounting for about 1.2% of their total population. At 107 miles from the nearest major metro (St. Louis), Decatur businesses mostly draw from a genuinely local search audience — meaning competitive pressure on commercial queries is far lower than in metro-adjacent markets. Decatur is located in Macon County, Illinois.
Nearby covered cities include Springfield (117,006), Champaign (83,424), Urbana (41,752) — some of which are larger than Decatur's 74,710 residents, meaning lower competitive density for Decatur-specific queries. The St. Louis–Indianapolis corridor (107 mi to 149 mi from Decatur) represents the competitive metro backdrop that shapes what Decatur businesses need to rank for.
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