I stumbled on the Where Are the Job? website, that places all of the jobs in the US on the map.
It is from 2014, so in Bloomington-Normal it is pre-Mitsubishi closing. The clustering in is interesting. People looking for manufacturing or logistics jobs should be on the western, southern, and northern outskirts along the Interstates. Professional services jobs are clustered around COUNTRY Financial and State Farm along Veteran’s Parkway.
Service sectors jobs are in the thin line following Veteran’s Parkway while much of the government, medical, and education jobs follow Main St (US 51.)
Clustering of jobs isn’t surprising. Small companies of similar types grow up near larger institutions. It also help workers since working in proximity to others in the same field help spread ideas and talent. It also shortens travel time during work hours.